Making Worm Gears. Harder Than You Might Think

[@jacklougheed4561]

TOT and inheritance yesterday, Artisan today. This is gearing up to be a great weekend.

[@printgymnast368]

Don't forget edge precision.

[@vivigarr]

Blondihacks as well It's a good weekend

[@PaulLemelin]

My watch later list is filling up

[@cousindave1]

Snowball Engineering on Sunday morning too

[@MasterOfNone2023]

I see you're a man of culture as well...

[@Bob_Adkins]

What I like most about this channel is that degree of difficulty or complexity are not deterrents. Spur gears, gear hobs, worm gears, taps, jumbo fly cutters that make other machinists run away are taken up as a challenge.

[@EirikvanderMeer]

Very nice work. The quick and dirty method is to use a tap and just calculate the appropriate gear from that.

[@UncleKennysPlace]

Or make a cutter from a 5% larger diameter worm, as I do.

[@neoasura]

Or just use a cnc lathe. I mean, its cool from a romantic nostalgic point, but with the cheapness of cnc setups now, even your smallest shops have access to cnc lathes.

[@kevinburke6743]

Not so dirty ! A Tap is ground form relived H.S.S. 4 Flute Hob! of the Pressure Angle & pitch of the Thread it is designed to cut! On Centre Line, a worm & worm wheel, are a rack & pinion gear set! Except & importantly, the Worm Turns the wheel! Not generally vice versa! A rack & pinion gear set is a Rotary to Linear motion transfer, that can go either way! Linear to Rotary, often bi directional or Rotary to Linear within the range limits of the length of the rack!

[@TheDistur]

Things are getting real fancy in the shop!

[@anthonyseiver7000]

Fascinating video. I learnt a lot about worm gears that I didn't know 30 minutes ago.

[@joshua43214]

I did this a while ago, only I used a triple start worm. It took several attempts at each stage to figure it out, and my set up ended up being much nicer than what you have done. The most important thing to keep in mind when free hobbing is that until the gear is cut to full depth, it does not turn at the correct ratio, and the whole thing ends up out of sync. The "secret sauce" so to speak, is in how the hob is cut, and preparing the gear. The hob must cut slightly deeper than the worm diameter, but its root must be exactly the same as the worm. This means you actually have to grind a different tool for the hob and the worm. The back of the teeth must be fully backed of or it will bind the gear while hobbing. You left a pretty large space behind the cutting edge and the relief, much too much. Lastly, the hob really needs to be turned between centers. The gear needs to have the concavity cut on the lathe to about 0.002" from final size, and a specially ground tool is needed to get the shape right. The gashing also needs to be done to about 90% of finish shape and depth. So you can not use a conventional spur gear cutter since it it too big in diameter. I turned a piece of tool steel to 90% of the diameter of the worm, and then ground the tooth profile into it about 10% undersized. Gashing was just like you showed. I also used roller bearings on the gear to ensure it was clamped well, and yet able to freely spin. The hobbing at this point is really just making the finish cut. The "blank" should actually be close enough to done after gashing that the worm will drive it.

[@MasterOfNone2023]

I'm like 98% certain that this channel is just "I Did A Thing"when he feels like being serious. Also I just realized one of the main reasons I love your videos. Not only are they very well-filmed and edited, educational, and entertaining, but you don't do all the bullshit "KZbinr" stuff with all the "smash the subscribe button" stuff that everybody hates.

[@4GibMe]

Or have a dog with big balls running through some poorly cut grass. AGREED.

[@up4open763]

In my limited experience with materials of all sorts, I've found cutting has to go in two speeds. Slow and meticulous, or as fast in a steady as possible. I would argue you're at the slow end, but only out of pure ignorance in making gears. Glad to see someone keeping this knowledge alive, the gear IS a massive gain in work, and a good gear set is months of labor saved.

[@charlestaylor3195]

The ol' worm drive, it has so much power. That was worth being late to work. "I was late because I let a worm drive." They probably won't think it's funny either.

[@BrianBoniMakes]

Very practical on what a small shop can do. I always love discussions on what is enough and how much precision do we really need for the job. Looking forward to seeing what you are going to use this skill for.

[@ThePottingShedWorkshop]

You did a good job there. One thing you didn't mention, the hob you made has subtly different dimensions to the worm as it has to cut the gaps between the teeth and the gaps are thinner at the root than the width of the top of the tooth. Otherwise, well done! You've just gone through the same learning curve I went through when the worm drive in my bandsaw packed up. Couldn't find an off the shelf spare, so it was DIY time, making a new worm and worm wheel using the free hobbing method like you did.

[@Jb12247h]

One thing you can do to cheese worm gears is to make the large gear by holding it with bearings and then use a tap as an endmill to cut the gear shape. As the threads cut the blank it rotates and you feed in SLOWLY. Once you have good engagement its done. Then you can use the threads as the small gear.

[@thefudgems]

Cool! My sewing machine uses this gear to wind bobbins; it was the first time I saw it. Awesome to see how it’s made. Thanks

[@pesnet7]

Excellent approach!!! Gears were the first insights into computing. Today they are united. One commands the other obeys. Perfect! All that was missing was the calculations for all this to happen. São Paulo-Brazil!

[@msmith2961]

Nice work! Could you use thrust bearings instead of spring washers to take up the slack but retain the rotational motion of the gear being hobbed?

[@donavinnezar]

yes it would be better can also use a double nut setup to lock the nut in place so it doesnt tighten or loosen on its own , ideally youd use a thrust on both ends

[@SvdSinner]

Thank you for you cut scenes that show real-world stuff like all the adjustments to center something in a 4 jaw chuck. It helps us know that you operate in the same world we do.

[@McKildafor]

This video was so damn informative. Such a great vid. Thanks for sharing this Artisan. 👏

[@jjcc8379]

Soon: Planetary Gears 🪐🪐

[@willclark491]

Bah! He should be ready for a miniature automotive differential!

[@nickwolfe483]

Planetary gears are just spur gears that are encased in a ring gear.

[@bergamt]

@@nickwolfe483 Ok but how do you make the internal ring gear

[@a-k-jun-1]

​@@bergamtwith a shaper, that is the most common old school way

[@vasyapupken]

there is no such thing. there is only a "planetary drive" which uses just a bunch of regular spur gears.

[@pesnet7]

Thank you for the great production of the video and the topic covered. You were very happy to use "DIAL Marker for threads" as an example. There are mechanical turners who do not know and do not know how to use this "DIAL to make thread" system.

[@monkeysausageclub]

I'm here to watch Artisan Makes weekly workout of cutting a big chunk of metal with a hacksaw 😅

[@pieterveenders9793]

Yeah, after all these video's, and all the machines and accessorries he has bought for it I'm really shocked he still hasn't bought a metal bandsaw. Or hell, he could have even made one himself, they're only moderately difficult to make, and especially for the bigger models it's a lot cheaper to make them yourself as well.

[@ianmoone2359]

I’m wondering why on earth Vevor haven’t sent him one to review & keep? 🤷‍♂️

[@kevinmullner4280]

Yeah, i´m wondering every time why he doesn´t take the 100,- € into hand to buy, for example, a "Parkside" metal bandsaw. And if it is on sale it is just about 69,- €. Or a cheap one out of Amazonia. The sweat and tears with the hacksaw would kill me. And that cheap one is good enough. Especially when Arti will have customized it. What he would do - that´s for sure. Maybe we should fundraise one for him?

[@mrechbreger]

0:41 seems like you did not get the disc perfectly centered? the let side looks a bit smaller eg. than the right bottom? Certainly it might be okay for your application, when I made gears some time ago I ran into those issues I need a 10micrometer tolerance on mine...

[@ianmoone2359]

Absolutely fascinating. I have no idea how you learn all this stuff but really appreciate the fact that you share it with us. 👍👍👍🇦🇺

[@jefflyon100]

Great video showing the various ways to make a worm gear in the home shop! I like the second method, gnashing the gear and then using the hob to cut final depth. I make these for positioning applications. For higher tooth count worm gears a standard tap works great in place of a custom made hob. For 180 and 120 tooth worm gears a 3/8-24 or 3/8-16 tap is my preferred hob. I started this only really to say that anyone making a worm gear that gnashing with the dividing head is a must before hobbing. You'll cut more teeth than wanted on the gear if you skip this step and make a mess of thin This puts the ratio off and also makes and the tooth spacing incorrect. I just bought Steve wards rotary controller (world of ward). It's incredible. It's about $230 US and all you need to buy is a $20 nema 23 stepper motor and machine a mount for it to suit your dividing head/rotary table. You get 0.005 degree accuracy and can divide a circle by upto 9999. You can also move by degrees to two decimal places. You can machine radius or cut circles as well. It has 4 or so preset selectable options for rotary control plus ones you can program from the keypad for custom applications. It's in plain language anyone can understand, no g-code or other difficult to learn languages. I was cutting a gear 15 minutes after i had the steppet motor mounted and wired. It has a second output that allows you to add any size driver and stepper motor to add an x, y or z axis that you can use in combinatiom with the rotary stepper motor. It can also be configured as a rotary axis if you needed a bigger driver and motor for your rotary application (think 4ft rotary table). The second axis can also be used as a spindle drive to give you timed spindle and rotary axis so you can use a real gear hobbing cutter to make proper worm gears. I'm even using it with a stepper motor on the x axis of my tool and cutter grinder x axis for surface grinding. You can add two limit switches and turn on/off a brake or fire an air cylinder etc. It's great as a standalone rotary or linear controller but incredible if you use both axis control. I don't speak g-code and had no desire to learn cnc, the "programming". Gear cutting is as simple as entering the desired tooth count and hitting entet. You simply hit go to advance to next cut. Add the stepper to axis and add limits and you can program/automate the entire gear cutting process. The manual makes it easy to wire and use the unit. I had no prior stepper motor experience and basic electrical knowledge. He gives all the support you need and you can even buy tje components and build itself yourself for far less $$$. Of, enough of this ramble!!

[@janeoconnor5764]

Good exposition, enough depth and thoroughness. Impressive.

[@vivigarr]

Could you use a thrust bearing when securing the gear to the fixture so that you can apply more pressure without preventing it from turning?

[@mattinkel7342]

Very neat , must buy some involute gear cutters some time , ive seen people rough hob gears using a Tap before, seems like some thrust washers would be just the job to let the blank spin.

[@Zardwark]

Wouldn't a couple of thrust washers either side of the gear be better than washers?

[@johnpekkala6941]

Thats some impressive work for sure! Another thing that also amazes me about worm gears in general is that they last as long as they do. The thing being that in constast to other gearbox types where the gears just roll over each other, with worm gears you have a lot of sliding going on between the screw and the gear. Sure worm gears are filled with some good quality oil adapted specificially for worm gears but still I would expect a worm gearbox to have a much shorter lifespan because of the sliding motion. A real world example from me is the metal bandsaw at my workplace wich uses a worm gear drive. The drive motor on the saw and thus also the screw spins at 3000 rpm with slam on direct start sometimes starting and stopping 100s of times during a workday. We got the machine in 2004 and it still show no signs of wear on the gearbox after 20 years of operation. At least I cant hear any different noises or notice any backlash still on the machine.

[@rogervickery9376]

Awesome! You're an inspiration bud, love the channel! Every time i watch you quench something though, I cringe a little in how small a container you use for quenching. Maybe it doesn't matter, but in the knives I make, the oil heats up so fast in a small container that I don't get as good results as a huge oil bath. Have you ever tried a bigger container with more volume for quenching? Was there any notable difference? I watch every week, Roger from Calgary.

[@bobvines00]

Where I used to work, the quench oil was preheated in order to reduce the chance of the part cracking.

[@billmacfarlane4083]

I'm in awe of how you take what I see as highly complex components and just make them. Do you have no fear!?

[@hunterlang578]

Hey, nice copper "soft jaws"! I've got copper pipe split and hammered onto my vice in the exact same way. Works pretty good!

[@TheChillieboo]

love it! showing the real world incremental process without the exclusive equipment! i got a lot out of this

[@RB-yq7qv]

great job. I think I would a diamond blade along the cutting teeth as heat treating can distort the cutter

[@cornnatron3030]

you should look into the wobble of either your tailstock or your center as its clearly visible around 22:15 which does not improve the work or finish.

[@Pete-xe3il]

I was going to comment on that as well. The live center or something in the tail stock or possibly both are enough to be noticeable by eye in the video as the tool starts to cut. So somethings definitely not right.

[@artisanmakes]

Well yeah the tailstock is almost fully extended to allow for the whole cutting set up. Not very rigid that way

[@howder1951]

Great demo of developing the system, enjoyed very much!

[@macromage]

at tafe we make a 4 start worm gear in the horizontal mill, with the shaft that connects the two. a four start thread is mad complicated, especially because it he helix is so long compared to its rotation, so the cutter is working hard to machine it

[@233kosta]

I'm assuming you'd also need a little bit of helix angle on your otherwise spur gear to make it work as well as it can with the worm screw

[@artisanmakes]

Doing it this way, it is not a true helix but it is the best you can probably get in a basic home machine shop.

[@233kosta]

@@artisanmakes I mean it looked pretty good to me in the end!

[@EIBBOR2654]

I had to make a worm gear for a mig welder wire feed motor. With a limited amount of tooling on hand, needing the welder for an urgent job and it would take a month to get a replacement gear I was tasked to come up with a solution. The worm gear was made out of aluminum and was stripped in a spot, But the work was made out of steel and not damaged. So checking around I found a tap with the same thread pitch as the worm. What I did was to find an end mill with the same diameter as the tap, cut a blank gear slightly larger than the original. Then used the end mill to profile most of the radius in the gear blank using a spin jig to rotate the blank. After making an arbor to hold the gear so that it spun free I used the tap in the mill like a gear hob. Now the tap has a 60° angle and the worm is basically an acme thread. So to finish form the worm gear teeth I used a lapping compound with the worm from the welder. I had the job done in under 12 hours and the welder was in use the next day. Sometimes you have to think outside of the box when you are in the middle of no where and you need to get a job done. This happened when I was in the military about 5 years ago. They are still using that welder with that gear I made.

[@asakayosapro]

16:40 I would think if instead of using the long axis, one can just use the in/out axis to cut the worm gear profile… It will cut an inward concave groove in sort of the same way a proper worm gear is. The only real problem is the radius of the cutter, which can be solved by using a custom rotating cutter with an adjustable depth, similar principle to a fly cutter but specific for the application. A makeshift one made from a broken boring bar with a carbide tip ground to profile might be the ticket, though not adjustable unless mounted on a boring head. Though, 22:30 is also one smart way to do it

[@Ronnymotard]

Nice job! Which big green book is it that you have in your movie? Thankyou in advance

[@artisanmakes]

Fitting and Machining Technical Book by Ron Culley

[@mytuberforyou]

There is a great DVD from the early 1990s tritled "Making gears the easy way" , that every hobby machinist should either watch or preferably own a copy of. It covers an array of gear setups with simplified math, and machining setups/techniques for both lathe and mill. Just as I'd recoment Machinery's Handbook and the DVD set "Lathe Learnin' " for the beginning metal turner, I would recommend Making geras the easy way for anyone foraying into gear cutting and hobbing.

[@Vindictator1972]

Man watching you make the worm just reminds me about how fucking amazing human engineering is some times. Like, just look at what a Lathe can do, it retracts the cutter and moves it backwards while spinning everything in reverse and spins normally when its realigned for screw teething. Absolute math went into making them, along with all the addons like the reducer and just the gear ratios inside them to do different things.

[@littlehills739]

22:00 thrust bearing and nut? on the post would this be usefull

[@elvinhaak]

Nice. Can hardly wait to see in what it is going to be used.

[@machinistsapprentice]

Great video! One idea for the gear tensioning: Use thrust washers below and above the gear your cutting and a simple plate spring (idk if it’s the correct term, translated from German) to tension the gear :) Reduce the spacer height by the thickness of one thrust washer obviously tho. Might be useful if you’re planning on cutting more worm gears in the future.

[@FladFlidington]

I came across a strange worm gear set up on an old OZITO electric chainsaw the worm gear set up was the motor shaft a 12mm metric thread driving a gear at 90 deg for the oil pump, it was defiantly a 12 mm metric thread as a 12mm nut was holding on a spacer on the end, the gear was made out of steel and had the helical profile, I thought it was odd until I saw this Video and how you made your own helical cutter , I guess the Chinese have mastered it.

[@JesusvonNazaret]

Did you try to cut the wormgear with a threading tap?

[@A-A-A-A-A-A-A-A]

Amazing video. Very informative. Keep it up

[@CandidZulu]

On musical instruments they are called Machine head tuning screw.

[@andrewclark8225]

Hi, you’re very smart, keep that green book! It is full of information! Being a fitter/turner isn’t about remembering everything it’s about being able to find the information you need at the time! Great video once again! Side note I lost my green book ten years ago when I moved from WA back to NSW 😢

[@ianmoone2359]

“Aaaaand, stay out!” Said by a parochial Sandgroper! 😜😂😂😉

[@gorak9000]

If you put a encoder on the one axis of your mill, and a stepper motor on the dividing head, you could do an electronic connection between the 2. Many people have done it. It's like a variant of an electronic lead screw on a lathe

[@karlfimm]

That power feed had a metal worm and a plastic gear. Would it work to cut a metal worm (as done in this video) and 3d print a matching gear?

[@toblexson5020]

Great work! I didn't expect the gear wheel to be the complex bit, but I should have guessed. Would a thrust bearing help with holding the gear blank down on the hobbing setup? It should allow tight workholding with a lot less rotational resistance?

[@arthurmorgan8966]

I have a silly question regarding making the helical shape on gear (not a machinist here, just a curious viewer): What if one were to take a round (tube shaped) file and fit it into tool holder of the lathe and slowly grind the profile onto the gear turning on lathe's chuck?

[@artisanmakes]

The helical shape is to do with the tooth profile itself. The tooth curves backwards, instead of being straight. The concavity you are referring to is the throat of the gear.

[@theancientones3755]

good video what was the book with the green cover you used for information called?

[@artisanmakes]

It’s called ‘fitting and machining technical book’

[@theancientones3755]

@@artisanmakes thank you

[@robertwalker7457]

Very interesting and pretty nice single point thread cutting for a bloke that doesn't like it very much. Thanks.

[@pawelw.9172]

whats the book you are showing at 9:14

[@artisanmakes]

It’s called ‘fitting and machining technical book’

[@โนรีคอกเบิร์น]

Well done. I usually dont comment. I often click off part way through. This is the best, educational, least obnoxious, interesting, sensible, potentially useful, out of the box, unusual topic, that you have ever attempted. To get credit from me, you can be proud of this video. I hope its quality can be carried forward.

[@rascalwind]

Do you not have Portable Band Saws in Australia? (Portaband)

[@MrSneakyGunz]

12:00 Feels like cutting and bending a tab on your copper softener jaws to retain them during loading/unloading material would be a nice, but simple upgrade.

[@georgemichalopoulos5169]

OK, I'm sold. Ebay it is. 😁 Fantastic work as usual, well done.

[@jlucasound]

I forgot what goes into making a proper worm gear set. That is quite involved!! You had great success! That was awesome to watch. Thanks!! 🔩⚙👍🙂

[@Arnthorg]

Maybe you could just cut a slanted gear and lap the gear in? ie. make an aluminum screw and use that with some abrasive to lap the gear to the right profile. I think that would be a cool experiment at least and I think would be easy to do in a home shop

[@dermotkelly2289]

Great video mate! I would like to ask you how often do you use that Hemmingway die, holder, you made some time ago and please give your honest opinion if you think it is worth me making one. Thanks so much mate

[@TheEvertw]

To help with finding useful pitches, I use a simple spreadsheet that calculates the effective pitch for all combinations of change gears I have. For a given pitch, I usually find a combination that gets within 0.01%.

[@GrandadTinkerer]

Or you could make another 'worm' from tool steel and turn it into a gear 'hob'. Plenty of videos on KZbin.

[@artisanmakes]

Yeah, that’s a much bigger and involved project there

[@sparkiekosten5902]

I enjoyed that! I know you made it out aluminium but that should work in steel as well? Cutting a shallow profile and letting the helical cutter di the rest?

[@PeterVanTassell-uu4jh]

I've been known to use acme threaded rod for worms, with regular gears. Figure the 29 degree flank angle on the threads works with the older 14.5 pressure angle on diametral pitch spur gears. Yep, I'm lazy. Not for transmitting large powers, but great for establishing odd angles.

[@mattylarkspur9858]

i wonder if you could make a change gear array that approximated pi, specifically for doing modulus turning. alternately, this could be the motivation for installing an electronic lead screw...

[@artisanmakes]

I do t have much interest in electronic leadscrews but there is definitely a gear train ratio that can get me to turn pi threads. It will require a complete rebuild of the gear train banjo to do it.

[@peters9929]

Newbie here, thankyou for being so informative and clear. Bit over my head but I'm learning. What type of steel stock do you mainly use im in Aust as well tks

[@artisanmakes]

Most of the time I use cold rolled mild steel. Here it is sold has Bright Mild. It’s relatively cheap and works for most of what I do.

[@sillysad3198]

when you index your diving machine in one direction for the entire 200 teeth how does it avoid accumulating the error?

[@artisanmakes]

Inside the head is a 40:1 worm gear which does the dividing. It’s only going to be as accurate at the worm. But one full turn of the worm is one turn if the dividing head so I don’t think error will compound in that way.

[@sillysad3198]

@@artisanmakes i c... the err stays the same axial play of the worm

[@YouCountSheep]

Cutting normal thread on a lathe is already somewhat of a challenge, at least as small as this one. When I learned lathe the only thread I cut with a chisel on a lathe was a trapezoid moving gear on a 4 cm diameter blank steel rod. The worm is not really a problem if your lathe lets you choose the correct values, but the gear is the major hurdle. You could cut every tooth with a mill when you set the table to the gradient/slope (idk the correct word in english for this) of the worm so it fits, but then you'd have to rotate it. Or you could build a little helper. Precut every tooth with a normal thread cutter so you have the perfect gradient. Then mount it on an angle with a tiny spring that grips into the little valleys so you can mill another tooth at the exact position, combined with a quick span of course so the mill doesn't rip it apart. And then at the end you cut a round depression into it with the lathe. That requires of course that the piece is a bit wider so you can still put it into a chuck, and then cut the gear off.

[@em21701]

Thrust bearings on the gear blank side of your hob setup would tighten that whole rig up quite a bit.

[@timturner7609]

20:10 you're really good at that 👌

[@att49356]

Hi Artisan, I'm about to buy the same Sieg 2.7L as yours. Since the First video you made about you price increased from 1500 aud to 2450 aud. Should i still consider buying It or do you think the price Is still excessive for It? I still cannot find a good One in the market with the same dimension and caracteristics. Please let me know your opinioni id like to buy a good machine for the right price. Also It It was good, what platform do you suggest to buy It from? Thank you

[@diegogallardo4192]

Gear hob - material Hello AM! Nice Video, thanks! What type of steel did you use for the gear hob?

[@artisanmakes]

I used an offcut of 4140. It’s not really the correct material for a hob but got decently hard enough to work. I would have used silver steel or anything similar if I had a piece in the correct diameter

[@reaper060670]

I have the smaller CALOR GAS bottles here in Dublin, IRE. I have about 10 of them and I'm weary about taking the head valve off. How do u know if there is no more GAS left in the bottles. The ones I have have been sat in a shed for 20 or more years. Some of them have someth in them bcos I feel it moving inside the bottle. Any advice would be greatly appreciated. I want to build a stove for my workshop. It's bloody freezing in the winter and I'd love to be able to heat it up then. Great video but the tool u made is beyond me pal.. LOL What would be the best wrench to take the valve off with? I enjoyed the video. It's a bit hazy in the picture though mate. Maybe the lighting is off a wee bit bt I still enjoyed ur video anyways..

[@md.arrahmandip7638]

What's the book you were using?

[@christophereva7045]

How do you calculate the OD of the blank for the worm wheel/worm gear?

[@artisanmakes]

It’s all in the video

[@christophereva7045]

​@@artisanmakesI've watched the video over and over thinking I must have missed it but still can't find where you mention the calculation for the OD of the gear blank prior to gashing😂. I see how you calculated the pitch for the worm and hob etc. could you possibly give me an indication of how many minutes into the video you mention the OD of the blank?

[@klpittman1]

Either make a hob or for a small worm gear, simply make a tap at the pitch and pressure angle you need and use it as a hob.

[@chrisgrainge8806]

That's excellent - thanks! I need to cut a 90:1worm soon,, have read the same books as you I'm sure, but seeing it done is super helpful - cheers!

[@davidc538]

what type of steel did you make that hob out of?

[@a_pakhomov]

pi is quite close to 22/7, relative error 0.0004. Do you have any gear pair for the lathe that gives 22/7 ratio? Like, 2 x 55/35

[@artisanmakes]

I can make up a set of change gears, but the problem I have is the gear banjo that connects the spindle to the power feed gearbox is fixed. There is no adjustment on the studs the gears ride on. I’d have to remake it to fit a different ratio of change gears.

[@mangamaniaciam]

Are you planning on adding a wormgear setup to your lathe for speed/power control in the future??🤔

[@t0mn8r35]

Very interesting project. Well done.

[@wizrom3046]

You can use a similar process with a plastic gear, but not cutting, instead thermoforming it. Instead of a cutting hob just use the worm itself, and heat the outside edge of the plastic gear blank then using force, push the worm into the gear while it is spinning then friction will keep the outside of the gear soft enough without the heat gun and you can finish thermoforming the plastic gear to exactly match the worm. Plastic worm gears are very popular because they are quiet, and can have no backlash because in the final adjustment they are tight and use elastic deformation of the gear (instead of a metal gear and worm which need a fixed clearance because there is no elastic deformation).

[@Hellsslave666]

15:40 It seems like some sort of divice to press in pins would be useful. I don't know but a fly press comes to mind. Think you could build something like that? ;)

[@martinfillola733]

Incredible video. We should put your name on our Formula Student car as youve helped us more than some sponsors

[@Pete-xe3il]

Straight cut or with the actual radiused profile, it's still a worm wheel. That radius is used most times (but not always) when the drive loads get higher or better tooth longevity would be helpful. So in reality, it all depends on what the worm and worm wheel were designed to do and for how long. And fwiw, all threads and gears can't ever be made to be "perfect" if your metrology to measure them is accurate enough. What that's normally referred to is there lead and lag pitch errors. Moore Tools in the U.S. spent massive amounts of money in effort to produce as close to perfect lead screws and nuts for their jig borers and grinders before very high accuracy dro's and then cnc were invented by grinding and then precision lapping. There final errors in thread pitch weren't out by much, low millionths of an inch in fact. But they were still there no matter how much time, effort and money they invested. Luckily and for us when used in something like a rotary table or dividing head, any pitch errors are divisible by the gear ratio between the worm and worm wheel. So the accuracy can be much better than the worm and wheel itself.

[@shipsofscale]

Very Nice. You really know how to work through problems.

[@JayquanDeMarcusWashington]

I designed and printed some for a school project. I can't remember the ratio, but HOLY COW... I can flatten a can with ~23g of plastic.

[@hootinouts]

Excellent work my friend.

[@merc7105]

Kicking goals mate. Cheers.

[@justicesportsman6020]

First time viewer here! Love the content! Aus ToT 🤙

[@traitorouskin7492]

Q. On the 'not a worm gear' if you built adjustability in housing as it wore down you get better bearing? Not ideal but I'm asking in theory

[@rcjbvermilion]

I've wondered about similar things. I.e. two parts that don't fit well? Put some abrasive paste in it and run it a bit until the two parts are bedded in. Not sure how well that would work though. Maybe more of a case-by-case thing that can be done.

[@boots7859]

@@rcjbvermilion Thats an interesting idea indeed. Its really cool when the comments section works the way it should.

[@HexenzirkelZuluhed]

You just seem to make it so easy.

[@boots7859]

Man, really liking this channel. Keep it up and you'll be drafting ToT. This might be a dumb question, however why don't you use a hacksaw blade while cutting a part off in the lathe? I can see a full size hacksaw potentially becoming entangled with the chuck, but what about just using the blade? Or is that one of those cardinal sins taught to fresh newbies?

[@artisanmakes]

If the hacksaw ever grabs on the material whilst the chuck is spinning I could see it very easily pulling me into the spindle. Not a risk I’d like to take on this big lathe.

[@fanert1]

thrustbearings instead of springwashers?

[@btzee]

Cool Work!! Can you make bevel gears too!

[@renetr6771]

Interesting video and great work. That straight cutted gears become really noisy, and the inacuraccies between the teeth add up with every additional gear. A worm gear has lot of advantages (self-locking) and disatvanteges (friction, extremly high w&t when high forces are transmitted) - so its uses are very limited. So ......one of your next projects maybe could be some helical toothed gears? Perfect to reduce noise and clattering.