An Atlas 101.212 and a non restoration

[kopcicle]

...intermission

Thank You ALL again, always, still, for your care, concern, input and imagination.


P.S.
You can blame Daryl for having the parts I needed ;-)

Dennis

[34_40]

The reamer set I received from the AmaZombies. looks good.
I tied the roughing an finish back to back with each other and , parallel.
I did the same with a known good 2MT taper and, parallel.

So far so good.

Now to dial the face register and the 2MT taper and record the run out. The face should be zero after a skim of the face. The 2MT taper will have to be cleaned up prior to indicating.

Then the options.

Move the 2MT taper. This is actually the easiest as the reamers both have a rear center.
Simply offset a center held in the tool holder or offset the tail stock the amount of radial run out , lock the spindle and advance the reamer.

Move the face. This sucks as anything done to the face other than perfectly perpendicular to the axis is just brain dead and would work only with that specific accessory.

Face to face chucks. Where you install a chuck on the spindle and true a shaft to it no mater what else is going on.
Place the other chuck on the shaft with its jaws facing the installed chuck.
Reproduce its angular misalignment on the shaft and verify by indicating on it's register.
if the misalignment between the OD of the chuck, the registration face and to a lesser degree, the "natural" center in the case of the scroll chuck agree, The spindle is bent.
If the register does not agree with the OD or the "natural" center in a scroll chuck but the "natural" center do agree then straighten the register. (what a bunch of words)

The four jaw is easier once the three jaw is close. Get the run out and angular distortion out of the shaft. resort to the cigarette paper trick for out of round, tap to center for the live end.
Install the 4 jaw on the shaft exposing the register. True up the OD for run out. indicate the register. True up the register if necessary.

Wash , rinse , repeat, until this becomes a repeatable operation. If it doesn't , run around in circles (isn't that what we've been doing?) screaming "Murphy!!! WHHHHHHY Me !!!!"

Then it's back to the internal taper and making it agree to the total indicated run out ( hopefully near nil at this point)
If not then it's easy enough to move the taper a "few" thousands.

and so it goes

UM,, yeah, I guess..  I've got to re-read this a few more times..  only absorb so much tech in one sitting. LOL.. thanks for making me use the other brain cell!

[kopcicle]

Close enough

[kopcicle]

Just catching up.

Once I counter bored a register in the chuck 🤦‍♂️
The rest was easy, The damage was beyond abrasives and a careful dial in of the register allowed for a .002" skim cut on the diameter and face.

But wait! That's not all!
Just the truing up of the axial face on the spindle and just touching off the register on the chuck resulted in the spindle interfering with jaw movement. I had to take .022" of the chuck nose for clearance.

Avery brief vid of the machine reveals the work on the gear train was well worth it. Just imagine inspection of every tooth and root of every gear in inventory. Imagine "blueprinting" of every spacer, bushing and keyed spacer. Imagine spending hours sorting out a banjo bracket that had been attacked by the flying monkeys with hammers. Then it was the lead screw alignment including centering on new half nuts to the point where there was full engagement without deflecting the lead screw and full disengagement.

It was worth the effort.

https://youtu.be/V4ZuCK6elF0

[kopcicle]

I'll keep it short. I just had to share a thought.

"lil" John Buttera, "When you make each part, each sub assembly, each assembly, to the very best of you time, tools, talent, and ability, only then will the sum total of the parts be greater than the whole."

For those of you that don't recognize the name, it's worth a deep dive.

For all the deburring every tooth. For all the not accepting anything but perfect alignment. For not accepting good enough. The results are worth it.

As the non restoration title states it's near time for this machine to start earning its keep. Its reward will be an eventual complete restoration because it will be made all the more easier since it will be completely functional.

[34_40]

Lil John Buttera, the godfather of billit hot rod parts! LOL.

The lathe sounds awesome. all the hard work does pay off in the end!

[kopcicle]

Does my heart joy that Lil John has not been forgotten.

On a more closely related note. I haven't been here in a bit and don't have much to report except this lil' beauty .

[34_40]

No hot rodder worth his salt doesn't know of John Buttera!  I'll say he was certainly an influence on who I am today. Carving wheels / engines / parts from billet blocks of metals...  He showed me what was possible with some tools & equipment and a brain! 

I cannot make out the name in the first picture but it looks to be an awesome piece sine/vice in one.