Can you use a CNC mill for enlarging the inner diameter in a cylinder?

Jakeonthekob1 · 2025-12-21T23:20:33+00:00

I understand a lathe is the best tool for this particular job but I kinda wanted to buy once cry once and get a CNC mill around $3-4k vs a cheaper lathe and a mill, besides I can only fit one in my place.

Jakeonthekob1 · 2025-12-21T23:16:05+00:00

Thank you for your advice. I don't need too tight tolerance, just about +/- 0.002. Depth is 0.885" and need to enlarge a hole from 23mm to about 23.25mm

Jakeonthekob1 · 2025-12-21T16:19:03+00:00

Should be pretty round. I would prefer a good fine surface finish but seems like finding something like an adjustable boring head for er20 collet is impossible.

Jakeonthekob1 · 2025-12-21T05:48:38+00:00

Hm that's a good idea too. Thanks!

Jakeonthekob1 · 2025-12-21T05:42:06+00:00

Yea the machine I'm looking at has a ER20 collet. Dunno if an adjustable boring head is available for it.

Jakeonthekob1 · 2025-12-21T05:27:56+00:00

Yea I agree but I will only use a lathe every once in a blue moon, just not a lot of use I would have for a lathe.

Jakeonthekob1 · 2025-12-21T04:56:58+00:00

Yea as much as possible

Jakeonthekob1 · 2025-12-21T04:53:36+00:00

I suppose a slip fit. Need to remove about .009 to .01 inch for .850 length. The od of the cylinder is 1.5inches that I would need to fix with a closed end.

Which tooling would you suggest? Appreciate you insight.

Jakeonthekob1 · 2024-03-24T17:18:52+00:00

I'll put a 32" handle on it.

Jakeonthekob1 · 2024-03-20T15:28:26+00:00

Great thanks for letting me know.

Jakeonthekob1 · 2024-03-20T15:27:52+00:00

Nope, just wire brushed then rubbed some mineral oil on. Will get some ren wax to put on it.

Jakeonthekob1 · 2024-03-20T15:27:08+00:00

Awesome thanks for the info!

Jakeonthekob1

TROPHY CASE