Hand Grinding Acme Thread Tool Bit

In this video I show how I grind a high speed steel tool bit to machine an internal acme 5 thread. We use a Starrett acme pitch gage, Starrett machinist square, and protractor. Hand ground on the 12' pedestal grinder.
Look for a follow up video on the thread cutting.

[@manuelg.2283]

Hey Adam, i like this Bid to make a tool for the Acme thread. I learn english with your vids. I teach young people to work with this machines and i see your channel for 2 years. Thanks to make this channel and give me the chance to learn the language. Nice greetings from Duisburg in Germany

[@Abom79]

That is great! I never thought I’d be helping people to learn English language!

[@timothyball3144]

Just remember that Adam speaks Southern Boy English. Not that it's a bad thing. In fact I'd love to hear some of Adams words spoken with a German accent.

[@dragonfly8080808]

Imagine, If your father and grandfather could comment. I'm sure they'd be so proud of you spreading a message I have no background in engineering but having watched your channel I understand a bit more. I hope there are lots of young people watching and learning that engineering is a noble profession. PS love your cooking adventures. Keep up the good work you're valued.

[@willemstreutgers1154]

Adam those equipment from your granddad is of great value, man i love the way you are doing this all, keep up this way of working, you are of great value for youngsters.

[@BradPow]

When i was in trade school, they made us all grind by hand 5 different hss tools. A general purpose, round nose, threading, facing and part off. This video brought back many frustrating memories of making those all perfect haha

[@johnstrange6799]

I like that you took your time and treated the grind as it's own precision machining operation. Thanks, Adam.

[@RollingEasy]

Just a tip to all. Spend a few rainy days just setting up little Excel programe on threading. If you like the idea of having all the info that's needed for any thread readily available on screen, its worthwhile taking the time to set up for it. As Adam gave the TPI and the Major Diameter, they were the two things I entered and out came all the information needed for both the tool grinding and the actual machining. Same for any thread and where once you set it up on your computer, its all there in an instant...... Great Video Adam and I've always admired you approach to all of you work and videos.... Great help you give all of us out here.

[@terrycannon570]

Thanks Adam you nailed it on grinding the tool bit. This kind of content is what separates you from many other other channels. Anybody can make chips and watch an insert do its job. I love the detail on the shaper bits and also on lathe bits. This is what tool and die making is all about. With this kind of talent and experience one shop can make the male die and another shop can make the female die and when they come together they must fit. Excellent content and attention to detail always will always keep viewers like me coming back for more.Thanks again for your time and for sharing your experience with us.

[@Abom79]

Thanks Terry!

[@thedrunkenpilot]

Thanks for grinding the tool bit even tho you didn't have to. I hate looking things up only to find that everyone skips the one step I'm looking for more in-depth info on. Love these long-form videos that go through every step; You, This Old Tony, Mr Pete, Joe Pie, and others who show us the entire process are making youtube an excellent place to learn.

[@luckybookairvids]

2:40 this, this mentality is why i spend my watching time with you and a few other folks.. thanks Adam

[@piperjohn_3]

Can't wait to see you cut the thread. Loving that little pedal steel solo on the new outtro.--tune is so relaxing.

[@combatmedic1980]

Adam, I can REALLY see a difference in your journey to get back in shape, It is paying off, you might not see it, but I surely can. Well done !!!!!!!!!!!!!! Maybe give us a update on your progress.

[@donaldshulman6771]

Adam - The shaper is a great tool for the shop. It has provided you with so much content for videos. Keep making more!

[@Godzilla032]

Hey Adam im addicted to watching your videos. Ive been going through watching your old ones while i wait for the new ones to come out. Ive learnt so much from them. They are very well presented. Keep up the great work!

[@Abom79]

Great to hear!

[@wymershandymanservice9965]

Such informational content. Always a pleasure to learn from a true craftsman. 👍 Keep up the great work.

[@polakis1975]

Great detailed job Adam! Eye for detail and patience is needed for this kind of work.

[@SmokyRibsBBQ]

Looking forward seeing you actually making that nut and doing the threading with the tool you just ground. Even though I'm not a machinist and know hardly anything about it, I find myself being glued to the video from beginning to end!

[@jenniferwhitewolf3784]

Smoky Ribs BBQ & Southern Cuisine Hi there! whats on grill tonight? Anybody reading, check out Smokey Ribs vids here on youtube! Some of the very best grilling and smoking you will ever see.

[@SmokyRibsBBQ]

Nothing tonight, but doing a big crawfish boil with friends tomorrow. It's that time of year again. Thanks for the comment, I really appreciate that!

[@Abom79]

Thanks Russ. That’s cool your still into the machine work. I enjoy watching your pro cooking skills! 👍🏻

[@AndySomogyi]

That’s great that you’re showing people proper safety techniques. Totally agree with how important it is with a grinder.

[@manwiththestar2305]

Awesome video! I really like that you upgrade the parts by machining new not just adjusting away the wear! Not only can one get more of the where the machined parts went but also since it's a shop at home that you take that extra step for and to have a machine in top shape must be a great feeling and it's fun to see you having a realy nice machine!

[@markschweter6371]

As soon as you pulled out your grandfather's handbook, I pulled out the one I have from my father-in-law... He worked at Warner and Swasey, in Cleveland, before he served in the war, but, apparently he wasn't the original owner. Machinery's Handbook 11th Edition, 1941 Arlington R. Adams N.A.C.A. Aircraft Engine Research Lab A little piece of history.

[@Alasdairryan]

Ohh friday video too....he's spoiling us this week :)

[@123Shel12]

Excellent video. I like how you show and explain the entire tool making process step by step. Definitely looking forward to you next video (cutting the threads)!

[@courtney123a]

Damn, I just love watching this stuff.

[@gatekeeper84]

Your hand writing is nice Adam, it is a pleasure to read.

[@Abom79]

Thanks!

[@stephenwagar2663]

How Much Fun Is This ??? I Cant Get Enough !!! Big Thumbs Up...

[@Ujeb08]

Nice job at explaining the layout and grinding of the Acme tool bit Adam. Your camera work is great too! The extreme closeups are so clear it's fantastic! I am never bored with your machining videos, thanks.

[@ProfRonconi]

Oh, bummer! I'll have to wait for the next video. This one was very instructive. Can't wait to see the actual thread cutting.

[@randomdude1786]

loved the bronze thrust washers good idea gonna be interesting to see how tight a thread fit you go for and that backlash to be gone and just wow on finding those spare parts good to see things workin out

[@manuelg.2283]

It help me to translate and understood the technical english. I belive in our times is it more important to learn it as in the past. I tould it the students often if i can how important it is. Adam explain on his vids all the basic's and many many specials. Good job Adam.

[@deltamachine2059]

Awesome video sir. Its great to see the time and care you put into your work. I try to do the same thing. At work we use mostly insert tooling for the acme threading. I am going to grind up some out of high speed for the less common pitches as well as some for my field box. Great explanation and video as well!!! I hope one day I can have a home shop with at least a lathe and mill. You're home shop and tool collection are amazing!! Thanks again

[@Abom79]

Great practice! Always nice to have some tools already ground up.

[@Mike..M]

I'm just getting started as a hobbyist and I find your videos very helpful and informative. Thanks.

[@paulmanson253]

Holy crow. A transparent safety shield you can actually see through. Life is mighty good for you today. All the bells and whistles. I remember watching a young guy in a body shop stick welding with no eye protection at all. This was back in the mid 1980s. I am told that snow blindness actually hurts more than arc flash. Guess he got to find out about the one anyway. By and large I have little use for the safety nazis, but there are good reasons you chose belt and suspenders for preserving your eyes. Good for you.

[@thatspsychotic]

Great stuff. Would love to hear more stories about your dad and granddad too.

[@gohuskies583]

Adam, Very nicely edited video! It tells the story and shows all the steps in nice detail. Something I wanted to learn and now am inspired to grind one. Thanks for sharing the safety message also!

[@SalvoMorina]

....a piece of art, as usual....congrats Adam.

[@calraines6931]

At Dresser we had a large 2 wheel grinder and a diamond wheel grinder for fine tool work. Made life much easier for the manual lathe operators. Tool crib carried hundreds of pre ground tools, all listed under a TD heading. Specific operation tooling was called out on the travel packet, but most times we had to grind clearance, etc, to make the tool work. Lookin good there!

[@lookcreations]

Lovely to watch you do that and me not see where I cocked up when I did my first ACME last year. The tool bit gauge makes the entire job much more straight forward. I used an online Maryland metrics thread data to get the dimensions. All the best mat

[@larsrodbok1285]

Love the slow-mo on cutoff.

[@peteramor9810]

Thanks Adam Another great video Pete (UK)

[@jeffanderson4979]

If I had a grinder station like yours, I’d be a happy guy.

[@billdunlop8683]

Great vid, When you were relieving the backside of the cutting tool on the grinding wheel and you were taking your time to make sure you didn't hit the cutting edge, Right about there is when I would sneeze and drive the tip into the wheel ;)

[@chrispalombo6394]

Homeboy's lost some weight! Go Adam!!

[@Abom79]

Does it look it?

[@beaubrowning7307]

It shows Adam, keep up the good work

[@camaro97383]

Keep it up man.

[@chrispalombo6394]

Yep! Encourages me to get on the ball!

[@tobyw9573]

Love Granddad’s steel case for the Machinery’s Handbook!

[@michaeljones6256]

Thanks for the video, I can't wait to see how tight and smooth that is going to run with the auto down feed fixed.

[@KevinK88]

Adam i Love these videos man i have gone back and watched every one some multiple times i wish i could come and work with you in ur shop 👍👍

[@Abom79]

That’s a lot of viewing Kevin!

[@KevinK88]

Abom79 i subscribed almost 2 years ago now and i always enjoy watching in the moring with my coffee to get my day started

[@Rubbernecker]

Nice touch muting during the cutoff! You are getting good at this!!

[@larrychamberlain2871]

Fine work Adam

[@bcbloc02]

Nicely done!

[@johnburke7253]

Thanks, that was perfect timing, I needed to grind some bits for my shaper and that was a great refresher' Enjoy the videos more and more now that I am rebuilding a couple of machines myself.

[@ohhpaul7364]

I have the exact same face shield. Find a box, or bag to keep it in- I had mine hanging up where I can just grab it and it is a magnet for dust. I wiped it out a few times and it scratches a bit easy; blow it out or wash it off- I haven't figured out what is best for it yet.

[@Abom79]

I keep windex at both shops and only use it to wash my safety glasses and face shields.

[@thomaslamora1679]

love this stuff. I learn something new every time i watch one of your videos. teaching an engineer machining is not an easy task ;-)

[@jrneff9773]

I a proud owner of a ck12 getting it fixed up. bought it from a man in MI. YOUR KNONE UP THERE TO. Rigging crew broke the gear box handle off i fixed that today needing to get a convert to make it spin in time .rebuilding a rigid 60 cpn vise the thread best i can measure is 3 teeth per inch i got it missing the dove tail nut my monarch lathe has a 3 on the gear box hope to make a new nut for the vise thanks for the vids abom.

[@brosselot1]

I've got a blast sheild also love it. I can fit my respiratory with it on. Great video. I've got to get some honing sticks.

[@stanfischer6175]

I too hand grind a lot of tools, but I have a little Rockwell knee mill, about a 1/2 size bridgeport. In the highest belt setting it will turn 6200 rpm! With hardware store grinding rocks and a dual tilting vise I turn it into an impromptu tool and cutter grinder! It's small table size allows me to rapidly run across the tool taking about a thou at a time. Tools are carefully put into the vise correctly set for the proper angles to allow for reliefs.

[@marcovincenzetti5830]

Perfect technique Adam. That thread is gonna come very nice man.

[@orkidknog4147]

looking good man, cant wait till we see the cutting taken place and hope you got a nice got fit, also looking better for losing weight each week keep it up adam

[@jdawg219dawson8]

I cut acme threads internal and use a incert and anvil I really like how u made the bar with the incert in it good work

[@stxrynn]

Well laid out. Thanks for that.

[@bighurk30able]

You know Wile e coyote traps used Acme thread lol good job buddy

[@RyanWeishalla]

Tom would be proud of your PPE. :-) And thank you for killing the sound when you sped up the cut-off wheel for us, too. That is a cool idea to scribe the lines as a reference on the tool bit.

[@Abom79]

Actually I only wanted to lower the volume there, not sure why it went completely silent. #amateurvideographer

[@deemstyle]

Great video as always! Any chance you could share a bit more about that aluminum Machinery's Handbook cover? It's not clear to me how one might go about making something like that. Very cool- and great sentimental value for you!

[@bobbyw9046]

Small suggestion about your G'Dad's Machinists book. Insert into case the other way so the back of the binding faces outward. That will keep the pages cleaner. :)

[@6NBERLS]

Sure appreciate all the time and effort you are putting into these videos. Seems like every time I get on the computer you have a new video. Thanks for the effort. What I don't understand is when it is appropriate to make a nut out of ductile iron when you know it will be rubbing up against steel. My dim understanding has been that you never want iron rubbing up against steel. My novice expectation was that the nut should have been made of bronze or maybe brass. Then I don't understand what the difference is between black iron, gray iron, ductile iron and Meehanite. I wonder what book I should be reading to find out these differences.

[@sblack48]

6NBERLS steel vs cast iron is a common bearing combination in fact. You see it in lots of machine tools.

[@waynepegram3262]

Like your fitting the tool to the gage & making it "light-tight".

[@Heizenberg.]

Can't wait to see the threaded part. Guess it is going to be an SNS vid.

[@rayfalcone6897]

all I can say is ......Sweet.................. thank you great video.

[@ZylonFPV]

I’m glad you decided to include this because

[@jasonderise60]

thank you for showing the end of the tool holder I am no machinist and I love your channel but I could not figure out how the tool was held in place,

[@rodneywroten2994]

pleasure watching you Adam

[@jamesbarratt593]

Can’t think you missed anything. First watch of your videos and thoroughly impressed

[@accuracymark]

Hey you are looking really good! Keep the up with your dietary program.

[@PeteSztencel]

Adam's a big guy, but I think even he'd have problems with a 12' grinder! Twelve foot? Dude, you could put a bevel on a battleship! Seriously, though, this was a really nice, clear description of a surprisingly subtle task. Thread fits are so much about 'feel'. Can't wait for the cutting! (Plus all of the Roadrunner/Coyote/Acme Supplies jokes in the Comments... )

[@TheSkipinatorVids]

Yeah, when I saw 12' in the description, my first thought was "Abom Grind!"

[@JDLuke]

Thanks for the video, and double thanks for muting the audio during that cutoff!

[@RollingEasy]

Here's a good tip. Just the other day I needed to grind a 55deg BSPP single point tool. I set up the Compound at 62.5deg using Trig. (Sin 62.5 x 125 = 111). This meaning I could machine a 3/4" piece of stock at 27.5 deg of chamfer. I did two pieces and drilled a small hole in one. I set one in the tailstock and the other in the chuck and brought them together. A perfect 55deg to set the tool grind. And exactly the same for any tool angle needed if you don't have the gauges.

[@shannonstebbens6992]

Super video. Back to basics with the superb Abom explanations.......

[@giuliogiulio1]

Awesome video Abom :) Calgary, AB

[@neilshurmur3901]

Adam nice Video job as I in the Audio Video Bizz, you did a good job. Have a old 1955 Logan ib pretty good shap need a few thing done , you yo work as a kid in a shop in Michigan and like working there. Thank you for the video on Acme threading . Neil

[@bombardier3qtrlbpsi]

Well done!!

[@lodhiautos9761]

Hi Abom, nice to see and to learn a lot from your video. Thanks

[@TheDefeatest]

It's really great how you always use protection when doing your work. Lead by example is the way to go. Blast shields are great so nothing shoots up in your face which can just be annoying and it lets you get right down there to have a good look if needed! Ear plugs are your future self thanking you for still having good hearing. I've worked with folks who can have a big ball peen smashing away 2 feet beside them all day and it doesn't seem to bother them. Yikes!

[@Abom79]

I work around people like that too, loud hammering noise, or the 1" impact wrench. I'm on the other side of the shop and I'm reaching for my ear plugs!

[@Pef273]

Thanks for adding the tool grind

[@jeromewelch7409]

Thank you Adam...

[@MR6.5]

Another great video, thanks Adam!

[@iceman7986]

Thank You Abom79, Thank You for taking the time to show all the steps, I really appreciate and enjoy your videos Sir! Thank You for being awesome! Thank you for being an Epicly Awesome Teacher! You Rock Sir! AWESOMENESS at its Finest Sir! :) :) :) Thank You!@ :)

[@BerndFelsche]

Great video. Illustrates the processes and the thinking behind why things are done One of the good things about being around today is that one can make templates out of plastic using laser cutters... Not for general workshop use but OK for the home workshop. Just measure the key dimensions of the template after cutting! So not being able to find a template is not a show-stopper as long as you can figure out the dimensions from e.g. handbooks.

[@georgebliss964]

Double check that your land width on the toolbit is narrower than that on the leadscrew to ensure that the cut thread contacts on the flanks rather than the major diameter.

[@doctwiggenberry5324]

There is nothing better than using father's or grandfather's tools in your profession...

[@jonedmonds1681]

To show the fit have you looked at a USB Microscope / Digital Endoscope, I just ordered one and it’s great for zooming in, to check my grinds, it was only £30 (Shekar Android digital endoscope). You can use your phone or PC and record video, I can see it will have got loads of uses in the shop, Rob (xynudu) gave me the idea when he used it for gear cutting with a printed template.

[@MyShopNotes]

I like the aluminium case on the machinery's handbook, I have a 10th edition I would like to make a case like that for.

[@shawnmrfixitlee6478]

ENJOYED .. Great info Adam !

[@DancerNY55]

Grandpa's aluminum book box is great! I feel another project coming on....

[@johnnyholland8765]

Adam... Have you thought about adding an adjustable fence to the grinder table? Looks like it would be an easy addition. The table looks plenty stable and substantial. Looking forward to the actual use.

[@Abom79]

I’ve given it some thoughts

[@johnnyholland8765]

Wouldn't have to be anything fancy and would sure help with those angles. Might even save those fingers from being "bitten" Maybe a future project?

[@kenwhite451]

Man all you have books, knowledge experience hope USA gets back to training all the trades that made us

[@justinbevier8231]

I found this while trying to figure out how to grind tool bits to cut acme threads for the tool holder on my shaper.

[@1bmwrider]

Your grandfather would be so proud of you for carrying on the trade.

[@billyc2572]

Sweet video. Think you'll ever get a surface grinder? That makes mince work out of stuff like this. you could have a whole series on the move of the machine . Inspection. Cleaning and repair. The videos would pay for the tool eventually lol

[@ellieprice3396]

Billy C: I've wondered the same thing. A 6 x 18 or larger surface grinder would be a very useful addition to Adam's well equipped shop.

[@Abom79]

If I ever get a surface grinder I want a nice size capacity like mentioned with power table feed. Would be nice one day, but for now not a priority purchase.

[@billyc2572]

My old work place had a really nice chevalier one. Power table and power feed with various programs

[@pherdantler707]

I would be interested in the brand of the face shield you are using? Thanks to a great guy for all the great videos!!

[@hal312]

Funny my grandfather also passed down his 13th edition of the Machinerys Handbook to me as well!

[@63256325N]

Thanks for the videos.

[@roberthousedorfii1743]

Hey Adam, can't you jig that acme thread tool in the milling machine and get a MUCH more precise grind on it?

[@dougguynn2622]

great info. enjoyed