Traveling Squareness Comparator P4

[@kyleward5249]

I love all the tidbits I learn from watching you. Today I just googled "liquid love" and "magnetic dealy bopper" and I ordered the 1st things that came up. Can you imagine the shop i'm going to build? One day i'll be as good as you.

[@scotmiller5680]

No matter how fantastic the content, someones gonna bitch about the editing. Fantastic job at explaining complex concepts to achieve impeccable results.

[@andy-man3405]

I commented on your previous video....asking what brand of annular cutter you were using. I see around the 3:00 mark you said that it's a Rotabroach! Yours truly has helped make thousands of those! I worked for Hougen Mfg. in Swartz Creek, Michigan for many years producing their annular cutters and portable electromagnetic drill presses. Awesome video! Take care

[@slausonm]

I will likely never make anything as precise as you are building, but I always learn something from your videos. Thank You. My wife is soon to learn I am going to buy a surface plate and surface grinder.

[@JorisRobijn]

Gee, that's a nice piece of work! I love the solid look of it. And I really admire the snug shrink fit, because you measured the round hole of the base with a caliper with square inside jaws! (at 12:52)

[@jasonh3109]

SUPER cool. I love watching you problem solve and work Tom. Thanks for taking us along for the ride.

[@fredparkhouse]

something satisfying about filing, even more satisfying when somebody else is doing it. great video Tom.

[@davidcolwill860]

A warning to others if they do hard turning. Make sure you clean the chips up immediately. They will tear up your machine ways! Great work. Thanks for sharing.

[@BROCKWOOD64]

Glad to see you posting again. hope it stays regular!

[@63256325N]

Really cool setup on the surface grinder. Love your attention to detail and your patience. Thanks for the video.

[@MegaCountach]

Wow... superb workmanship Tom! Lovin it, Happy Trails, Doug

[@PracticalRenaissance]

This is a super fascinating build that I'm excited to be following along with, Tom! Don't hold back on any of that lapping footage when it comes time to finish those feet!

[@turningpoint6643]

I'd like to think I know just enough to be more than suitably impressed with what I just watched in this video Tom. Some really unusual but well thought out and executed set ups to test and grind those feet. High precision tool making at this level using non exotic average machine tools and a massive amount of skill and experience is extremely interesting imo. I'm sure the lapping and finished results will be just as interesting and impressive.

[@peterverhagen4269]

I see that Mister Bozoo made it back in time to add 13 minutes of nothing at the end!

[@LambertZero]

I was expecting a secret scene after 13 minutes of nothing. :-D

[@KnolltopFarms]

Yeah, and he was even heralded @ the 52:11 mark...and I even had the temerity to "wait for it...", LOL!

[@MikeBramm]

Yet another excellent video from Mr. Wizard. Thanks Tom.

[@billbrennan8405]

Hello Tom - Another great video of exceptional machine shop talent at work, basic skills & talent that is all so hard to find today world. I find that you get me thinking of how to better approach and improve my shop working technique. Thank You Bill B

[@davidvanlaningham972]

Dow 111 valve packing grease is by far the best stuff I have found for sticking things like the center ball you were using in your grinding setup

[@iainfletcher6388]

Stupendously good Tom. Thank you for sharing your experience and knowledge again and again.

[@madinatore]

the heat treated surface is gorgeous!

[@billdlv]

Looking good Tom, nice work as always that base is beautiful.

[@sharkrivermachine]

Great job. I am looking forward to the grand finale!

[@InverJaze]

Well done Tom. Out with a file as usual. Excellent.

[@TABE-O]

That is some great video of machining filing etc. I angle shots makes all the diff.

[@Smallathe]

Wonderful project, very well (what else?) made... thanks for sharing.

[@forrestaddy9644]

Excellent work on "The Liptonator" - wait: "The Lipt-O-meter." Step by calculated step you're working towards your end precision. Each is explained and demonstrated, ever potential stumbling block is studied and a remedy worked out. You've developed a series of lessons anyone could follow to attain a similar goal. You"re continuing the themes you set forth in your earlier books on craftsmanship and metalworking. My hat's off to you, bub. By the end of this episode, your instrument swept a plane from the post only 0.001" TIR out of perpendicular in a 12" circle. Some of that may be due to the necessary handling of the post as you side wheel ground the pads. Thermal equalibrium rules. That's a crafty bit of kit you're building there but i still want to see the stencil set you used to number the protons sequentially accellerated at Livermore. Did they ever find 56A?

[@oxtoolco]

Hey Forrest. Thanks for the nice comment. I think there were some stray protons under one foot which exacerbated my indicator error. All the best. Tom

[@stevencoldiron3335]

As always, I enjoyed the machine work. Nice

[@evilbrat5376]

How to go Simi Wackos. Build one of these - love the finish after the heat treat. Seeing something didn't know. Thanks for showing this.

[@Th3_ENGINE3R]

Watch to the end and the Darkness will consume your soul! LOL Great video! I love your content Tom.

[@dizzolve]

I love the sound of that bronze

[@flatheadronsgarage7345]

Nicely done Sir. This is so far over my head yet you make it very easy to watch. Nice grinder setup. New to machining. Still putting my Abrasive 1 1/2 together. Would be nice to meet you at the Bash. Need to watch more of your videos. Thank you...

[@jasonburns1407]

Thanks tom looking awesome

[@andymandyandsheba4571]

nice work tom looks fantastic

[@accuracymark]

Love the setup on sine bar with the mic.

[@AmateurRedneckWorkshop]

i wonder which name was the thickest on the post it notes. Of course having seen Tom measure the thickness of a sharpie mark I guess it makes a difference what is used to write on the notes as well.

[@sethbracken]

Amateur Redneck Workshop I was wondering the same thing. The number and positions of the vertical strokes in each letter would have an effect too, depending on how they were distributed under the bearing surface.

[@MattOGormanSmith]

When water-based ink dries out, it shrinks paper. But IIRC that doesn't happen so much with the fragrant mix of organic solvents in Sharpies.

[@tobyw9573]

I have a mike ball adapter that attaches to the mike spindle with a small rubber sleeve. Easy to duplicate.

[@DRrandomman22]

I did a lot of hard turning at my last shop and I would spin the lath as fast as I could and feed pretty healthy but I used a all ceramic incert from seco I'll have to dig some up and give to you the numbers

[@krazziee2000]

Thanks for the video and information ,,nice work ,,

[@robertcook5201]

Using a sharpie marker you can adjust at about 0.00013" per dried line.

[@MakinSumthinFromNuthin]

That guy is turning out sweet Tom 👍🏼 ~ Richard

[@OldIronShops]

Lol almost fell off my chair at 20:13 . Sorry high school moment. Carry on.

[@OldIronShops]

got a whole jar of them in fact.

[@macro820]

That will be good for future replacements

[@JR-yr8xm]

in case they get sucked off

[@jefferdman5921]

Nice work!!

[@James-fs4rn]

👍Thanks for sharing.

[@RRINTHESHOP]

Beautiful Tom, It is all in the shim.

[@OldIronShops]

Randy Richard In The Shop had to bring on the heavy hitters

[@PracticalRenaissance]

Loved your cameo, Randy! 😂

[@ehamster]

Great to see the next instalment in this series. Any progress on the etching press? Nothing for a year and I'm dying to see it progress.

[@xenonram]

ehamster yea, what ever happened to the etching press.

[@erlingweiseth2774]

I want a T-shirt, sayin' - "What happened to the etching press, Tom?"

[@ThrowingItAway]

I was wondering about that too

[@OldIronShops]

Mr bozo showed up in the editing dpt . Got some dead air at the end just a fyi.

[@1jtolvey]

FORGOT ARROWS ???

[@blackoakmushrooms]

Hey Tom, great vid. Sorry if I'm off topic but have you ever mad a mini pallet with a sine bar built in? Is there a place for something like that?

[@Gkuljian]

That calibration fixture is trick. It was good bozo avoidance insurance.

[@CB.5]

That is art!

[@HaraldFinster]

Did you switch the light off during the final lapping procedure? :-) Seriously: just gorgeous. So many neat tricks demonstrated in a single video. Thanks for sharing and best wishes Harald

[@FesixGermany]

Abom and Randy Richards shim killed me!

[@jonedmonds1681]

I was expecting some bees wax and jewellers rouge like Stan finish grinds with!

[@SuperSecretSquirell]

Dang...had me all jazzed up for an hours worth of building then I get blue-balled by 13 minutes of nothing lol

[@torstenb5248]

Thanks fo the 13 minutes extra footage of boring action, Mr. Wizard.

[@Ujeb08]

I'm really lovin this series Tom! I just have a question on the rod center and ball stop; did you bore or grind that center "chamfer" surface? I 'm not even sure that it would matter but I'm thinking if you are using only a center drilled surface, then the ball's spherical interface might not always be in contact and reflect in the indicator reading??? Phew!

[@oxtoolco]

The pin was cylindrically ground off those centers. They are lapped centers not just rough center drilled. Cheers. Tom Hey what gives I miss your videos!

[@AustrianAnarchy]

8:57 Knobikus? That thing is brand new. Shouldn't it be Knabokov?

[@kurtu5]

Ok, I don't get something. Why does the grinding wheel only take material from the feet when they are at top dead center? The side of the wheel should be completely flat, no? And so shouldn't material start being removed as soon as the feet cross the wheel's edge?

[@alejander456]

Nice been bing watching so this helps

[@rocket862]

I would like to ask what may be a dumb question (still new to machining). I have a small milling machine at home, and I want to know what kind of stone to use on the table?

[@rocket862]

I think I answered my own question - Norton India stone. 100/320 grit?

[@euclidallglorytotheloglady5500]

Oh ya! CBN for the win!!

[@Titus-as-the-Roman]

Mr. A R W somewhat stole my thunder, when down to Quantum size measurements the dried thickness of various inks could be problematic when finding true flat, or if they could be categorized a fine addition to gauge blocks, shims and plates. Honestly for myself thinking that small in tolerance makes my Brain hurt.

[@Shermingtan]

Great job and a very nice tool. As a German I love that you have a Röhm chuck. Are you satisfied with what Röhm produces?

[@oxtoolco]

Its actually an Albrecht chuck. Yes I love my German chucks!

[@CapeCodCNC]

cool project!

[@gripWIN]

How do you guarantee the AXIS of bore is true; when you chtucked on a Cast Base? Thank you!

[@oxtoolco]

Don't really care that much other than its kinda close. The final squaring happens when I lap the feet perpendicular to the pin. The bore is just along for the ride. Its only job is to hold the pin immovable. Cheers. Tom

[@Chris-ox7qx]

Thanks for the upload Tom. Did you also consider also throwing the shaft in the freezer (assuming you don’t have a bunch of LN2 laying around)? Or did it not fit? Would Mrs Tom not be okay with that? Also, your squareness setup was pretty clever. I was thinking you’d just set up a makeshift comparator with a v-block resting on the plate on some blocks but making contact on the shaft just above the the base with an indicator off the v-block indicating the very top of the shaft. And rotate the shaft. Did you consider/dismiss that? It seems that basing the indicator on the sliding collar would introduce variances from any possible play. Again, thanks for sharing the project with all of us armchair machinists.

[@rockwell6594]

Along with the method that you have described I thought of using Tom’s largest vertical square (or some other stable high fixture) on the surface plate with a V-block or similar down low to engage with the bottom of the pin and an indicator up top engage with the top of the pin. The pin and base would be rotated while held against the V-block. It is a clumsy method in some respects but does have the advantage the it is using the height of the pin to amplify the indicated error.

[@petemclinc]

Why no liquid love when boring that 60HRC base?

[@nraynaud]

did the hard turning chips got annealed during the cut?

[@gandersson6121]

Shrink fits are really interesting. maby make a more detailed video on the subject. preferably with some metric conversions for us non Us/Libya people :)

[@transdimensionalist]

check out the zeus reference book it has all standard shrink/interference fits along with other useful engineering data such as thread dimensions etc. and the recent ones are metric revised

[@gandersson6121]

Thanks for that. Still interested in a video. Old timey tips and tricks type deal

[@najroe]

Lok for Machinerys handbook in english, for Swedish, "Karlebo handbok" is great, sadly karlebo out of print as far as I know, but second hand shops... I see them frequently. Both have ton of tables on fits and temps for different materials, tolerances, threads, fasteners, grinding, tooling, heat-treatment of different materials, just huge knowlegebase of mechanic related stuff

[@gandersson6121]

Yeah, I have my granddads old copy of "Karlebos handbok" Its great, But its written in ye olde swedish so its rather hard to follow.

[@kenwilliams9518]

I have nowhere your expertise however, it seems to me that this rotary squareness comparator would be very frustrating in actual use. How could one use this device against a vertical cylinder as it would be difficult to run up and down the cylinder at the exact same vertical line .

[@redditroom2981]

Tom, at the start of the video, what are those dovetailed slide measurement tools called

[@transdimensionalist]

adjustable parallel

[@thomasa5619]

Is there any merit to finely finished metal surfaces wearing slower than poorly finished metal surfaces? One gun builder is claiming guns you buy from him or one of a small number of manufacturers are still in spec after hundreds of thousands of rounds

[@hodgepodgeenginerd1258]

Just so I understand... You couldn’t surface grind the feet before you put the shaft in because you needed the shaft to reference perpendicularity at working height?

[@Cenedd]

Yes. The important thing to have perpendicular to the surface plate is the column so that when you move the travelling head up, it's exactly 'up' and not 'up and a bit to the side' which would throw off any readings you take with it. The base itself; doesn't really matter if it's true to anything - although I'd argue that were this to be produced for other (less able) operators than Tom, it'd be helpful if the top of the base were true to the column (the reason Tom made his magnetic calibration jig) because you can guarantee someone will assume it is!

[@evilbrat5376]

By the by, how far does this "Traveling Comparator" go?😀

[@jcurran2414]

Why not use 3 Feet instead of 4?

[@hirsutusi5536]

I think you will have to lap three feet, front back and right hand side

[@_f_]

When will mashines build mashines?

[@flatbedbob]

Etching press in the background

[@shaocaholica]

Why are you indicating different feet on the grinder? The whole point of grinding is that the feet are no longer co planar to each other or the axis of the pin. Shouldn’t you have rotated the part to indicate the same foot whilst locking the lateral movement?

[@transdimensionalist]

that was rough indicating, he mentioned final indicating on the same foot rotated as you say, he did that off camera

[@moshegalimidi2302]

YAY

[@R.E.HILL_]

Borderline cruel ending on a cliffhanger like that... ☺

[@1jtolvey]

ROCK - ON !!!

[@bcbloc02]

Could you have just as easily just indicated the shaft in the 4 jaw and faced the feet?

[@dsfs17987]

4jaw wouldn't work, you can't indicate the top end of the bar that is way inside the spindle, and 4jaw jaws may not grab the part and put it totally concentric with the spindle bore,, 4jaw+steady (top of the bar in 4jaw, the base sticking out to the right from the steady) could work, but proper way would be to mount it in between centers, but then the question is - are the centers accurate enough in relation to the bar surface, so his setup makes a lot of sense

[@bcbloc02]

No I figured you would have to leave it stuck out of the chuck and indicate it in 2 spots to get it concentric and parallel.

[@dsfs17987]

that bar is not that long to get meaningful stick out to have reasonable distance between the places where you would indicate, and the more it will stick out, the more it will sag and not to mention the flex as you'll try to cut, it will most definitely sing, as the cut is interrupted and steel is quite bad at absorbing vibration, so no, 4jaw is not really an option for this job

[@JCisHere778]

I would have placed it between centers. I think with a good lathe he could have achieved the same result.

[@somebodyelse6673]

RC60+, and high precision, wouldn't that be more toolpost grinder than turning territory? Is there a type of setup to do true lapping on a part face still in the lathe?

[@LordOfTamarac]

Hey Tom, total novice machinist, might be a dumb question, why not surface grind the top surface of the base parallel to the feet so you could use that to ride the bottom of the sliding indicator on. All of that as opposed to creating the magnetic tube fixture?

[@transdimensionalist]

because even though grinding would be more accurate there is still some possibility of error as proven by the grinding of the feet not producing a perfect result and needing final lapping, the magnetic tube fixture insures greater accuracy which is important when producing a reference instrument

[@oxtoolco]

The feet are to be lapped. I really needed and wanted to reference the pin axis at some fixed height to test perpendicularity. Sure I could have ground the base and top parallel but to what? Not easy to get it perpendicular to the bore when its really short like it is in the base. Hope this makes sense. Cheers. Tom

[@LordOfTamarac]

oxtoolco Thanks Tom!

[@bluedeath996]

An Abom sized shim doesn't seem very big.

[@Edward_John]

Who edited the last 13 minutes of the video, Nixon's secretary?

[@1musicsearcher]

Hillary’s staff

[@KHCshadow1]

Why not measure the squareness with the sliding mechanism at the top of travel? That way your errors are magnified. Cheers

[@oxtoolco]

Hard to reach down to the plate in a reliable repeatable way. The pin is 16 inches long. Cheers. Tom

[@elidouek5438]

11:27 I swear I heard “oooh mummy”

[@CapeCodCNC]

13 minutes of dead space at the end?

[@twobob]

And he said they "Just swept the average of the last 600 seconds signal for Primes one more time and there it was". How conspiracy theories start.

[@freelancergin]

hello darkness my old friend

[@FredFred-wy9jw]

Abom got to be thicker..... Look out you will twist the sin bar ;-)

[@hmshopfix6283]

Tom, Rota-broach = Anti-Bozonian cutter. :-) Eric