Lathe Compound Mods for Multifix Tool Post

I'll share how to properly modify a lathe compound slide for mounting a PeWE Tools Multifix type tool post. According to the inventors of this style of tool post, you need to have the post body pulled down to a solid surface, not over a gap like you typically seen with the wedge styles.
For interests in the Pete Tools posts and accessories for your Multifix contact Peter:
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[@Frankodilla]

I’ve been a machinist for 18 years and I still love it. That KBC is a really good little mill. Love the videos sir!

[@reinermiteibidde1009]

Right, these conventional mills are getting very rare nowadays.

[@rogerscottcathey]

Did the KBC sound a little loose somewhere? The piece got tight putting it into the key slot. Think there was movement of the vice?

[@Frankodilla]

@@rogerscottcathey no it’s not loose just the machine might be slightly tilting with the weight shifting as the table moves if the gibs have any slack. But that machine sounded good. I’d chock it up to the compound having a slight taper in the t slot.

[@josephford8884]

As always, Adam's fit and finish are just beautiful. A pleasure to watch him work and see the finished product emerge.

[@MadeinUkraineChannel]

I applaud standing! You will hardly find such simple and excellent content. Well done, boy. No show-offs, no extra words, everything is clear! Bravo!!!

[@chrisleech1565]

Love the silent intro sequence Adam. Pictures speak volumes.

[@nigelroberson8911]

Wow, awesome generosity from viewers. Ime sure everything will be cherished and put to good use.

[@mfc4591]

Adam, you made that drilling and tapping process for the T nut look so easy. In my experience, its always done with effort and with some trepidation ! Thanks for the video.

[@user-vn6hi2bi3g]

You give meaning to the phrase competent machinist.

[@robdixon945]

Thanks for the show Adam

[@spdy3926]

I think it's great to see a project of you making something. This is where you shine! It's like classic Abom. Luv it! Nice work, and the explanations are simple and clear. Nice narrative. Thanks for the great video!

[@bernardmauge8613]

Nice work, beautiful photography, class act. I am planning to get one for my old French lathe, now I know what to do. Thanks.

[@angelramos-2005]

Quite a beautiful delicate work,Adam.Thank you.

[@williambramer8217]

Superb work as usual. The Precision Matthews lathe always looks super concentric and stable. The effort you put into setting it up has produced dividends - the finish on the work pieces is outstanding!

[@charlesdeens8927]

Excellent vid. Professionally filmed as always.

[@russbird8257]

Thanks Adam .. Best to you and Abby .

[@StevenHess]

Loved watching this.

[@loydsa]

Lovely work as always Adam and excellent filming

[@davidmotoman4956]

turned out spot on Adam. beautiful finish as always

[@marceloiannini8199]

Adam, I found out that my Multifix size E couldn’t stop rotating until I put the dowel pin. I used a M6 stud bolt as a dowel pin, as the fit was really tight and made it removable, which turned out years later to be the salvation for mounting my recently acquired toolpost grinder. Your work quality makes me feel ashamed of mine’s!

[@joekanicki5306]

Brilliant Ricky!

[@ChrisSherlock]

Great work there Adam!

[@bcbloc02]

I reckon a new lathe is always exciting!

[@workaholicada319]

High quality video, professionally shot as always.

[@JBR.Vlog8565]

Well done sir ❤

[@eyewetoddid]

Beautiful work my friend....as usual.

[@erichoff7926]

Adam your personal honor and commitment to excellence is always evident. Great work; every .003 thou counts! Eric

[@bertblankenstein3738]

But by lifting the one side by 3 thou he only needed a minimal pass in to the slide. Without that adjustment he would have had to go 3 thou deeper to clean it up all the way across.

[@aleksandrfirsanov924]

Интересный и познавательный формат роликов!

[@TheAyrCaveShop]

Nice work Adam !!

[@jamesmcalarney2991]

Wow great work old guy!

[@user-di7us4ni2p]

Very nice and nice clean work

[@user-tw9io9nz2m]

Abom + multifix is a recipe for a banger video 👌

[@Metaldetectiontubeworldwide]

Eye candybar, great to watch , even theraputic for me ❤ Grtz from the netherlands Johny geerts

[@jimjardine4705]

Facinating!!

[@TedRoza]

G'day Adam.. excellent video on doing the mods for the toolpost assembly

[@ARIFINLATHE]

This is real technologi..good❤

[@anthonymarino4260]

thanks of enjoying another Saturday night

[@can5projects563]

you just reminded me of TOT Great job mate

[@Hey_Its_That_Guy]

Thanks, Adam (and Abby! 😀 ). Happy Fourth!

[@shawnmrfixitlee6478]

nice job adam & abby !👍👍

[@davidsnyder2000]

Happy 4th of July Adam and to your loved ones😊

[@rickybradby1312]

Query, why did you not clamp your compound base directly to your milling table, sitting on your parallels? Pulled down as like it would be in your lathe.

[@phillipchambers8487]

@abom79, That was an Awesome Video Adam! As soon as I get my Precision Matthews 1660TL I will be hiring you to perform the exact same job for me. Great Job!

[@ariomarariari5089]

perfeitissimo amei .muito lindo magnifico..super profissional.parabéns.sucésso e abraços..

[@SuperDave21]

Wow Adam.... I'm green with envy of your shop, tools and knowledge. I've always loved to play with the shop lathes and mills at work... but I'm retired now with no shop. I''m sure glad I've got you to keep me interested in it Buddy! Cheers! Happy 4th of July !

[@edwardhiggins1295]

Opinions are like assholes everybody has one. GREAT VIDEO Adam

[@Gee2316]

Man I love me a big ol tap

[@danielnorman8595]

I must not have been listening too closely at the beginning I thought that was for your precision matthews until the very end

[@TheMth370]

Adam's new ASMR channel :)

[@wickedwotsit]

Nice job as always 👍. I have watched loads of your videos and I really like you watch. Can I ask what watch it is ?

[@user-qh8lc5rx9l]

Станки конечно обалденные..

[@markbrown-us4xe]

Hope you stamped it A BOMB. Really nice work.

[@johnjohannemann1220]

Well done 😅

[@rodneywroten2994]

It will eat on you when measurements are so close you will break it down and make it rght. Awesome Adam

[@EPaulIII]

Great video! Interesting point about the 0.003" off parallel. I wonder if the dovetail slides are also off parallel, or if they are true to the bottom. I would have checked that before deciding how to do the top with the new tee nut. I also wonder if this technique might be advantageous when mounting other types of tool posts. I designed my own with a broad, circular base that straddles the slot in the compound but now I am wondering if this mounting technique might make it more rigid.

[@patrickl6866]

Appreciate the good/detailed videos. I went to Walter's site to look at the external threading tool style you were using (vertical insert) and they don't show it as an item they carry. Maybe I just can't find it. Do you have a link for the external threading holder and inserts?

[@BruceBoschek]

Excellent work and very instructive. Thanks.

[@paulmcdonald9592]

Inspiring. Always a pleasure watching your craftsmanship.

[@bulletproofpepper2]

Thanks for sharing.

[@ronmurphy9819]

Perfect timing for me. I’m changing the tool post on my Grizzly to a better quick change. The T nut doesn’t fit, so I think that I have to make a new one. Do you think that I’m on the right track?

[@chemech]

I'm suspecting that the 0.003" [0.0762mm] was well within the manufacturing tolerance for the compound slide housing. that's seldom a truly precision ground surface. I'd be checking the bottom surface of the rotating base first a little bit more for parallelism and flatness, as that's a machined surface and can be slightly out since it wasn't ground. Only after I was sure about the base would I go after the top, checking my setup as I go along. Tolerances stck up (add up) so a couple of items being off by a few 0.0002" or so, plus some gapping, can add up to a couple of mils (thousandths of an inch). Basically, it boils down to how close do you want / need the final result to be, and how much careful attention to detail you are willing to spend to get there.

[@Doug_Edwards]

You get all the fun jobs. Thanks for the video.

[@petemclinc]

Well before decking the top surface of that compound and T- Nut, I would set that compound on your AA Starrett surface plate and run an indicator all over the top side to see if it's parallel with the base.

[@pentagon1000]

Bravoooooooooooo

[@stevemaertz7793]

Great work as always !!!

[@UnderOpenSkies]

Do you think the 0.003 was from the dovetail? Did you try tightening the dovetail wedge?

[@kimber1958]

Beautiful work as usual thank you for sharing

[@RobertGracie]

Adam your videos are inspiring, such a lovely thing to come back to and watch after 6 hours of hard work, you really make my evenings fun to watch in 4K :D never stop, keep them coming!

[@mohsinashiq5017]

Hello

[@nothing2loud]

Since it was off .003, would it have been better to pull the oilers and mill the whole top? Great video and love the content!

[@n1knunya903]

Hi Adam, great video as per usual. Have you seen these fractal vices? It seems to me this tool would be in demand if someone was making them at a very high level of quality. Adam Savage recently showed one on his channel from China. I thought of your exacting practices with machining and you would be perfect to make one of these thing of the old patent and it make for some great videos.

[@ariomarariari5089]

americano é americano. perfeito. valeuuu..sucésso..tmj..

[@daveharriman2756]

Nice job, agree with the shimming to get it level with the existing surface, as you have to assume the compound is probably in line when installed on the owners lathe. cheers, Dave

[@daveharriman2756]

@@SteveColluns-hm2xx Hi Steve, he actually accomplished what the owner wanted him to do. he fitted a multifix toolpost to the guy's compound. The run out is his problem, maybe the owner should have been notified as to the .003" error, but thats another point, cheers 🙂

[@daveharriman2756]

@@SteveColluns-hm2xx Ok Steve, I'm a retired machine tool fitter, worked for 50 years, If this was my lathe, I would certainly have corrected that error by scraping or whatever. I agree, if I had this job to do, I would have contacted the owner and asked if he wanted it correcting before I proceeded. So I do get you, should have just fixed it to the surface of the compound as it was, now I've had a long think about it. I've only just seen this channel, it came up on my feed, so don't know of his historical work practices, cheers, Dave

[@frfrpr]

Interesting content. Super filming. Thanks!

[@CameronMcCreary]

Why wasn't the top of the compound, surface ground? I just subscribed with max bell. Very good fit on the tool post thread. Thanks for the machine work. Do you ever use thread gauges for checking the fits of precision threads? Otherwise, I will continue to view to see your work. I was a CNC machinist much of my life before retiring and I also had a toolroom shop at home where I did custom work. See you tomorrow.

[@daveotto2190]

Nicely done!!

[@floridaflywheelersantiquee7578]

Nice job thanks for sharing

[@olavmsonge5221]

All you do, tools are cutting like its in butter. Amazing

[@martinvelasco2943]

You should really post a toolbox tour video, I’m curious to see what different types of tools you have

[@revolveperformance]

He has, many times.

[@bheckel1]

nice hammer

[@wizardind3203]

should you put a 3/4" set screw in before milling the top if you turn the compound around to let the back jaw dominate as it does. the moving jaws likes to lift a little any way .you may not need a parallel on the movable side

[@sergioxavierdeoliveira3397]

Very good

[@laurawerner]

Nice video. I'm going to need to do that for a new lathe soon. What size Multifix tool post do you have on that PM 1660-TL lathe you used in the video? I'm about to order the 1640-TL, and it should take the same size. (Unfortunately, PM doesn't have the measurements I need in their manual or on the web site, and I'd like to order the toolpost when I order the lathe rather than waiting until I can measure it.)

[@Lisa_Turner]

So what angle do you set the compound to before you pin the multifix tool post holder? 30 degrees for threading?

[@davejenner7966]

Thinking about the front to back 0.003" error, could that not be due to the gib tapers?

[@plainnpretty]

Nice little job thanks Adam

[@garychaiken808]

Good job. Could you give a demonstration of how to use this. Thank you.

[@marmaker8548]

Hi, What camera do you use for these beautiful images? Thank you

[@ronnydowdy7432]

❤ Love it Adam.

[@bobwilliams7343]

Hi Adam you levelled the top of the compound but isn,t the bottom of it three thou out now.. I might be wrong trigonometry was not my thing in school ..anyway love the videos keep em coming

[@gaboonviper85]

Potentially yes but thats ultimately irrelevant and wouldn't effect anything....so long as the bed ways are straight and true then parts will be true also.

[@friedrichkeul9791]

Hi Adam What do you think of a thread micrometer?

[@Iflagum]

Real craftsmen. Wow.😎

[@mxlje]

This doesn’t require a thrust bearing like the bigger one on the pacemaker?

[@PorchPotatoMike]

Nice product placement.

[@normandogrady2965]

His speciality

[@RR-cy5pr]

Thank you very much... Lots of great info for me to use

[@notsofresh8563]

18:00 Since the part was so perfect in the vise, I would have shimmed up the whole vise.

[@ggbogo935]

great mod man! you should really invest in a surface grinder

[@halkuhns8070]

Not a machinist and never will be, too old, but I been watching machining for several years now, enthralled with the ability to be sooo accurate. Like others, not understanding the meaning of the .003 parallelism discrepancy. @chemech and @ydonl have plausible explanations I can appreciate.

[@silasmarner7586]

Who is the object of each sentence? Each sentence is incomplete.

[@RobertKohut]

Great video, great precision!! 🙂

[@JaenEngineering]

17:15 could it be the moveable jaw has a little bit of lift to it?

[@larryblount3358]

What is the shim stock material? It looked like plastic. ?. Where did you purchase the shim stock?

[@BloodCover]

That’s some dang good photography at the end

[@jamesworsham125]

Well done little brother!