Plinth For Qctp On 9 X 20 Lathe

8mm lead screw to the left with cast nut. 7/16-20 lead screw installed. Does much to add rigidity.

"Billy G"

102_1210 (800 x 531).jpg
 
well out of my comfort zone Bill.
Looks very cool though.
Will this be for all the repetitious work required for the radial engine?
Did you cut the 7/16 20 thread or use all thread? (wash my mouth out with soap and water)
 
Single pointed left hand thread Charles. That's a long way to run a die and hold tolerance and all threads is junk for this. LOL

"Billy G"
 
The handle is started
ball-handle1.jpg

then is finished
ball-handle.jpg

with a touch of polish.
So far I have used the plinth for threading and parting.
Parting is an absolute joy now, 40mm aluminium not a problem, 10mm stainless, straight through, no grabbing no juddering just clean cutting with long wavy ribbons.
I'm well happy with it.
 
savarin,

The handle looks great, but I thought this was supposed to be a break from polishing! :grin big:

-brino
 
Oily or dirty hands will change your mind about using that polished ball. LOL

"Billy G"
 
Nice work on the upgrade. Amazing sometimes how effective a small change can be. Cheers, Mike
 
Just thought I would post these to show how it now parts.
There is no way I would ever have contemplated doing this with the standard setup.
Just look at those long ribbons of steel.
Just to bring it back to reality, I didnt start the cut with that much overhang.
parting-1.jpg

And the other part that I wanted.
parting-2.jpg

As it came off before I faced it dead smooth.
Now all I have to do is get the blade exactly vertical with some shims and have another go as it did cut slightly curved.
 
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