Machining a Bronze Acme Nut

I machined a bronze acme nut that I will use as a test nut or gage for when I machine the new leadscew for the American Pacemaker compound lathe.
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[@danielnorman8595]

Wile E coyote is bound to be very happy, you keeping the Acme business going and all.

[@glenj.taylor2938]

HILARIOUS! 😄

[@pyro323]

You stole my comment! Well played sir! 🤣

[@chrispeoples4606]

McMaster-Carr, greatest industrial parts supply house ever! If they don't have it,then it doesn't exist. Long live the great yellow book, all 4000+ pages....

[@brianburke7440]

When I heard the story, he created the McMaster Catalog on about the forth day?

[@Tom_Losh]

That's a beautiful tap - and that flex-arm simply DOES NOT take prisoners! Looking GOOD!

[@willh9115]

The way you removed the woodruff key, that is gold. I'm learning machining on your channel. Simple tricks or old school experiemce, I would have never thought of doing that way. Thanks man. Keep them coming.

[@Abom79]

I’ve used the mill vise many times to remove large keys from shafts 👍🏻

[@Jimmy_in_Mexico]

@@Abom79 are you working in your new shop yet? When I see you working in your current shop I want to ask if everything is ok?

[@nebtheweb8885]

@@Jimmy_in_Mexico He is still in the process of setting it up. That project in the above video is for his big lathe in his new shop.

[@Garth2011]

@@Jimmy_in_Mexico New shop is not finished yet but both shops will stay running full time.

[@pacificcoastpiper3949]

@@Abom79 why does the tap have two sets of threads??

[@matthewperlman3356]

First time I have seen a tandem tap. Thanks for mentioning that they should not be backed out; good knowledge to have when I eventually need to use one.

[@l.r.norris6519]

I always learn something from your videos. Thanks!

[@francisschweitzer8431]

FOR THOSE THAT DO NOT KNOW… Hobby Machinists… aspiring machinists and non machinist that like the channel At 9:53 Adam tells us he’s using Alumi-Tap fluid and it’s good for Aluminum and Brass. This LUBRICANT is “NON Chlorinated” and this is important to know. Use of a “CHLORINATED” cutting fluid on Aluminum can cause a fire … ask me how I know. ALWAYS READ THE LABLES

[@Navigator777777]

Don't ever change your music!

[@willb3018]

I am not a professional at any trade and not much of a DIYer at that. But when I can't find something suitable locally, McMaster-Carr has always been my first stop and has never let me down.

[@bennyfactor]

Abom said elsewhere (in another video, or comments) that basically that square shoulder type of screw profile was superseded in the industry decades ago by acme and so there is nobody making taps/dies anymore for McMaster to sell, unfortunately.

[@brentgalye2936]

I know you won't, but thread that onto an arbour and break out the brasso, That would look incredible. Adam has made me want to change carriers at age 61 and apprentice under him, not only an artist on the machines, but on the pit as well. Thank you Adam, and my best to Abby.

[@stevendupre2792]

Cell phone carrier?

[@ellieprice363]

@@stevendupre2792 Career.

[@fanman421]

I made my own acme tap from a piece of acme threaded rod. Tapered the end and ground the flutes then oil hardened it. Worked much better than I expected. 😉

[@94XJ]

I always loved how bronze looked when machining it but the sound? Can't say I miss that.

[@WayneWerner]

I think my ears are bleeding 😬😅

[@marsrocket]

The captions called it “applause” at one point.

[@energiespecialist1615]

i'd say it was brass.. Bronze doesn't screech like the.. :-)

[@vaderdudenator1]

For real

[@94XJ]

@@energiespecialist1615 I think it depends on the type of bronze. I feel like aluminum bronze (I remember 959 because I'm a Porsche fan 😁) might have been quiet but bearing bronze was unpleasant...or maybe the other way around? *shrug* it's been 15 years lol

[@daftDAFdriver]

Love the detail and accuracy demonstrated, a true craftsman

[@BruceBoschek]

Loved seeing this! Ironically, Brandon, over at Inheritance Machining just made an Acme tap to do the same job!

[@Doodlebud]

Always love the sound brass gives off when you tap it. Miss working in a shop

[@CXensation]

Always something interesting to watch for the technical inclined on this channel. Thanks for sharing Adam !

[@peterselby5694]

I always screw cut in the lathe Acme lead screw half nuts for a couple of reasons. 1. being it avoids the cost of a tap which are mouth wateringly expensive here and only likely to be use once so not a good use of resources (cash) 2. Its guaranteed that the screw cut thread will be true to the rest of the half nut especially where it is secured to the cross slide. I did notice that the tap in the tapping machine had a wobble so some sideways strain was put on the tap possibly making it cut a few thou larger. and not true to the machine surfaces. I have cut h/nuts as small as .625in (a Myford lathe lead screw size) Grinding a tool that small can be a bit of a challenge especially side clearance which has to be spot on or the tool will not cut and only rubs. The most successful way I have found of forming a accurate tool profile is by using a tool and cutter grinder fitted with a multi position vise. A Shadow Graph machine would be handy here to check the profile and size. I grind the tool just a few thou under size, on the width which allows me to get a near perfect fit by tweaking the compound slide.

[@Ujeb08]

yeah I notice the runout in the tapping op too.

[@carlbyington5185]

I'v been using my taps for so many years, But, I needed to do a 14 X 1.5 on an Audi wheel, and bought a new German tap... Man, Oh Man, Butter !! so nice !

[@jamesbarisitz4794]

That Flexarm is a gem of a tool. Nice job Adam.

[@silasmarner7586]

I agree completely, and the number of peanut-gallery-ticians who whinge about the flex arm is stunning. It works well, is easier to set up than a mill, etc. etc. etc.

[@jamesbarisitz4794]

@@silasmarner7586 The fixturing setup with chuck and vise is clever. Adam paid attention while working his way through the years.

[@AlessioSangalli]

Ok but in this case - it was already a lathe part, wasn't this power tap mechanism really advantageous over a lathe? If so why? Thanks

[@grntitan1]

@@AlessioSangalli How would you hold that tap securely in the lathe all while having full control of the feed? That’s why the Flex Arm is the best choice. Purpose built tool.

[@nebtheweb8885]

@@grntitan1 It also has that built-in clutch to stop the bit if it binds up.

[@KimbrellBrad]

Nice tap! That double-cut is a great idea for a nicer internal thread!

[@Jims-Workshop]

I loved that little grin when the test nut came off the tap and you were studying it to make sure it was good. 😁

[@Not-C-418]

I always love the pictures you put after the video ends Love your content, wish you all luck

[@BentBruunRasmussen]

You make everything look so easy :-) Thank you for another great video.

[@LimestoneCoastCustoms]

He does, doesn't he! ( It's as annoying as sh*t 🤣) but I always learn something coming here!

[@MoparStephen]

That's what many people don't realize when factoring the cost of someone's work. You're not paying for the 20 minutes a job takes. You are paying for the 20 years of experience it took to be able to do the job.

[@harlanmartin9964]

love watching....I am a drafter/designer in the foodservice industry for stainless steel equipment.....but love watching any kind of machining like this....great job ..awesome

[@larrysmurthwaite773]

That machine did a stellar job, I’ve seen those done by hand and it takes a bunch of torque to plow through that nut! Good job.

[@charlesmeyer4639]

So nice to see you making things, I actually learn something from that.

[@MrRogsmart]

Nice. Information rich as usual. A big thumbs up on this one.

[@motivatedpeon]

That distinct sound of brass / bronze when it is machined. Right up there with fingernails on chalkboard.

[@andymaltby4518]

Superb job! Vide greatly appreciated. Serious bit of true craftsmanship Adam.

[@Csharpflat5]

Great content and manufacturing

[@donaldnaymon3270]

Nice work. Great video. Strong flex arm. Thank you for sharing.

[@rolandolievanoagudelo.5112]

Muchas gracias maestro por brindarnos sus conocimientos bendiciones 👍

[@thomasrappen5906]

THX Adam, was waiting for this....

[@autismosis69]

Best use of vertical video I’ve ever seen

[@jonbutcher5593]

Awesome work man

[@joewhitney4097]

Great video Adam. Love your channel. Inspiring me to take up as a hobby! Thank you.👍👍👍

[@davidhorsley1149]

Had the occasion to drill and tap some heavy dimensional copper once. Tried all of the conventional tapping and cutting fluids, even tried kerosene (recommended by a machinist friend), but to no avail. Wound up twisting off several drill bits and breaking three taps. Finally, by accident noticed the jug of bar and chain oil used in the chainsaw, decided to give that a try. Finished the job with one bit and one tap. I would have never thought as sticky as that stuff was (akin to STP oil treatment), that it would have worked. But it's stickiness must have been what was needed to counteract the soft gummy nature of electrical grade copper.

[@charlesangell_bulmtl]

Yeah copper's a bitch. Thanks

[@charlesangell_bulmtl]

A case for the Flexarm, allows the use of tap that is visibly NOT concentric...👍

[@jeffkeller1669]

I like that Flexarm. That's awesome! Wish our shop had one.

[@charliemclaughlin1042]

I remember using taps like this 25 years ago they were huge 3 inch finish cut with 3 different taps they were at least 2.5 feet long on the boring mill was so worried about them breaking in the parts but they cut like butter with no problem 😉

[@tman19971]

I have broke them using a boring mill it’s not a good day haha

[@billhale9740]

Yes indeed they do work well there is a reason for there being three taps to get the thread cut on larger size one a little bitty one inch not so much

[@ErikBongers]

I must say, the sound that tap makes can be used in horror movies. Shivers down my acme...I mean spine.

[@markgordon4368]

Parting off that hex bar sounds sublime 👌

[@Michael-nu1py]

That’s a really nice tap for dang sure

[@LittleAussieRockets]

Always learning something new with your videos 👍🦘

[@SteveC38]

Nice Work, Brother!

[@williamparker8318]

Good video. Love that tapping machine. Last time I tapped some brass I didn't have anything decent as far as a tapping fluid. I went in the house, fried one slice of bacon, and then added mineral spirts to the grease. Worked good.

[@gagasmancave8859]

Hope the bacon went between two slices or bread

[@ChuckRoss77]

Great video Adam...I actually turned 3/4 - 6 ACME today at work...first time I've seen ACME in years.

[@brianburke7440]

Do you see a more modern type of thread used now instead of ACME?

[@plang42]

Apart from your lathes, that tapping machine is my favourite machine in your workshop 👍

[@jrb_sland5066]

Adam, you didn't mention the fact that the thread you are cutting is LEFT-handed. So for a single job {& an indefinite future sitting in a drawer} you need to buy an acme left-hand tandem tap at over $US 160.00. It is good to know that there are on-line suppliers who can provide same.

[@tomoakhill8825]

Yea. Just saw you posted this. Can;t wait to watch it.

[@TheMoody876]

Just ordered my first micro 100 boring bar all because of your videos

[@dbriggs1689]

You got some nice tools man.

[@floridaflywheelersantiquee7578]

Flex arm is cool thanks for sharing

[@JohnRoberts71]

Great content thanks for sharing

[@garylucas6511]

Thanks for mentioning the price of the tap. I often wonder what the professional tools cost.

[@charliemclaughlin1042]

Thats awesome that tap has 2 different cutting sizes

Olá amigo!!! Tenho aprendido muito com seus trabalhos!!! Obrigado abraço!!!

[@nestorsanchez9870]

Good job !!!

[@MikeBaxterABC]

1:30 ... Excellent plan!!! ... going to be great!!

[@richardjones38]

Looks like the same 5/8" ACME tap I bought for making a new nut for my Jones & Shipman 6" machine vice. I set up a saved search on ebay to get one for a sensible price here in the UK. Took a while, but it eventually found one for me.

[@dougmottert2258]

nice job

[@fernandofert9960]

Hope to see the latest @flexarm in the new shop soon! These kind of merchandise are priceless.

[@paulcopeland9035]

He said there is one coming. It is a cart mounted model!

[@user-yg1ky2wp7g]

good job

[@anthonymarino4260]

Well done

[@gilmartrevisan]

Nice job, Mr. Booth

[@WCC209]

That small starrett ruler tip was great. I never knew that small of one existed and ordered one right after I finished your video.

[@Laz_Arus]

The depth function of a digital or vernier caliper would achieve the same result, however that thin rule would win every time for convenience. Time to find one locally.

[@koford]

I was like wauw what a sound it make when you making the thread.. never heard anything like that. cool.

[@badmonkey0001]

That tap makes a heckuva freaky noise.

[@summerforever6736]

Flexarm must be very proud of you!

[@mdouglaswray]

WOW that was some intense noises from that tap! Unhappy would be one word. Almost angry. Impressive that the SwingArm just powered right through it smoothly without hesitation. Excellent tool!

[@paulcopeland9035]

The model Adam has will tap up to 2"! He has a couple of videos where he demonstrates. Today's tap is not near the capacity of that sweet machine!

[@piotruszkiewicz]

Bardzo dobra robota. Pozdrawiam serdecznie 😊

[@donteeple6124]

Wooooo...was puckering for a bit.....another 1/16th inch and ya might not have been able to remove the tap from the power head....yi yi yi.....that woulda really sucked....but ya got er off.......Good job !!!!!

[@douglaspierce7031]

I like your Greenard arbor press. They're still in business here in Nashua NH

[@peteouellette975]

Very nice

[@k9elli]

That through tap is savage. Basically just All In off the line lol

[@t.d.mich.7064]

That tapping head is just too easy! I would be threading that in the lathe. Turning Left hand Acme threads are fun.

[@Smallathe]

It's a nutty video... just kidding... lovely and elegant work as always! :)

[@sparkplug0000]

Abom, I hope you are aware of how much knowledge you impart to your viewers. Watching your channel, I have come to appreciate not just how a part is machined, but what the chip says about it. For example, I would have guessed bronze chipped differently than we saw here. I’m not sure how that knowledge might serve me in life, but at least I do know now!

[@nebtheweb8885]

I think it was brass

[@MrMojolinux]

Back before expensive tandem acme taps were commonly available, we would have rough single pointed that size ACME thread in the lathe, and finished it up (also in the lathe), with a conventional single section ACME tap to produce final size. I noticed the run out while you pushed your tap through the bronze. Single point threading, then finishing with a tap in the lathe, reduces any possible thread run out relative to Nut OD.....if that matters.

[@rjstiles80]

Had to go back and look after reading your comment and man that did run out quite a bit.

[@JohnChuprun]

I noticed that run out too, if you can see it, then it's gotta be pretty large. I was surprised no one mentioned it besides you.

[@JunkMikesWorld]

I used a tap of this type some years ago to make some cross feed nuts for the Logan Powermatic lathes we had at school. I guess I did not know this type of tap was meant to only go forward and not be reversed. Interesting and a valuable tip. By the way my nuts turned out just fine.

[@greenbudkelly2820]

Go easy tapping your nuts and they should be fine

[@danhammond8406]

I try not to get my nuts tapped, kinda hurts

[@markpatterson7070]

Thanks Adam!!!!!!!!!!!

[@arduinomaquinas]

incredible presentation, I liked ❤ the content and I subscribed to your channel, I have a small lathe here in Brazil, I love the profession, big hug friend! 🇧🇷😉👍 👏👏👏👏

[@fricknjeep]

HI THERE i am just a beginner and you make it look easy john

[@ARIFINLATHE]

Nice brother....

[@billhale9740]

Had the pleasure many many years ago of making a triple acme thread replacement but for a huge vale in a boiler house the idea of a double or triple acme is it is stronger than a single tap acme to open or close the valve

[@patrickirish9427]

I have threaded nuts that small on the lathe at work to fix some tailstocks

[@stevemcpike9010]

Adam I must say I'm pretty excited about your learning cnc. Think I'm looking forward to those vids more than the others

[@kindablue1959]

Opposite for me. There are lots of other CNC channels, but not so many experts at manual machining. Two very different skills. And IMO, watching someone write code is as boring as it gets. (And I actually write code for a living).

[@cleanmachine08]

Aside from it just being awesome, any advantage of the flex arm vs tapping in the lathe?

[@jimwinchester339]

Jeepers - that tap makes the creepiest sound!

[@ericnewton5720]

Wil-E Coyote called, and wants his ACME tap back

[@harlech2]

As always Adam.... like a BAWS!!!

[@greasydot]

That flex arm is a really cool tool Adam. Sure beat the old 25hp radial drill we used for power tapping. Used to do gobbs of 2, 3, and 4 inch NPT fittings with skip tooth taps. Back in 1990 they cost a whole months pay.

[@ellieprice363]

Sounds like you broke a couple….(:-))

[@ojaiwatchalot]

Long videos short videos . I like watching you cut steel. I like shredder videos too. Would love to see you build one of those. :e)

[@physicsguybrian]

There was a wobble as the tap was doing its thing.

[@glassontherocks]

Wile E. Coyote used lots of these. Gotta' love Acme.

[@bertblankenstein3738]

I watched the first few minutes a second time, just to double check. It's it worth mentioning that the thread/tap are left-hand? Thank you for the video.

[@paulcopeland9035]

He shows a bit of the machining of the left hand thread on his facebook channel. Check it out for a preview.

[@wolfgangkayser1432]

@@paulcopeland9035 I noticed the left hand turn, too.

[@summerforever6736]

Is the machine museum is open to the public yet??

[@lelandbradley1076]

One of the advantages to the acme is the tapered thread, you can adjust them for wear if you have a split nut. Do you plan on a split nut?

[@AlanTheBeast100]

I'm kind of annoyed that it stopped with the gauge nut.... . Nice. Can you clarify that you ran the tap through once only and gave us two views?

[@eetupyykonen1492]

Do you use tools with different rake angles on materials like bronze or brass to prevent the material from catching onto the tool?