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[Illinoyance]

I have repaired racks before. Assuming it is steel just weld up the broken teeth, clean up the top and sides. Tilt your mill head to the pressure angle....

[Illinoyance]

Adjustable boring bars were commonly used on turret lathes with non-adjustable holders.

[Illinoyance]

They look like cutters made by Jancy Engineering I think they were called RotaBore. They were intended for thin material. Jancy developed a mag base...

[Illinoyance]

I am going to vote for throttle shaft reamers.

[Illinoyance]

The horsepower required to drive a drill depends solely on the metal removal rate. If a spade drill requires more HP than a twist drill i is because...

[Illinoyance]

Those cable loop vibration isolators are a commercial product.
https://vibrodynamics.com/our-produc...ope-isolators/

[Illinoyance]

I have cut chambers with a steady rest because my lathes wouldn't allow otherwise. It seems the setup would be simpler if I could have run the barrel...

[Illinoyance]

Toolmakers tables had the x-y slides above the rotary.

[Illinoyance]

Sometimes increasing the spindle speed helps. If you are plunge feeding try flank feeding instead.

[Illinoyance]

Assuming the A setting on the dial is 1:1 ratio the gear set shown will cut 17 tpi. Replacing the 85 tooth with 90 should fix the problem. That assumes...

[Illinoyance]

Ideally there should be tapped holes and clearance holes in the blocks. Surburban tool is the only source I know of doing this. Suburban isn't chea...

[Illinoyance]

When cutting inch threads with a metric leadscrew or vice versa there has to be a 127 tooth gear to make the thread pitch come out exact. Any combination...

[Illinoyance]

Back to the collets: Be warned that if you bet additional collets from the bay, flea market, or antique store the 8mm collets were made in two different...

[Illinoyance]

Lee Valley sells the hardware kits.

Acme threads on a handscrew? All I have seen were UNC threads.

[Illinoyance]

I have 2 smaller aluminum pallets with a grid of 1/4-20 holes alternating with 1/4" reamed holes. They are about 3/4"thick. I also have a...

[Illinoyance]

Better yet put a 1" travel dial indicator against the carriage. Turn the leadscrew by hand 8 or 9 turns. The indicator should read .800 or .900....

[Illinoyance]

Check the alignment pins. Too much clearance can allow the mold halves to be misaligned.

[Illinoyance]

Foundry suppliers have wax in sheets. I don't know if they have thin enough sheets for your needs.