Yahoo Groups archive

Homebrew PCBs

Index last updated: 2026-04-28 23:05 UTC

Message

Re: Micro endmill cutting speeds

2007-07-29 by ghidera2000

--- In Homebrew_PCBs@yahoogroups.com, Mark Brueggemann <qrq_cw@...> 
wrote:
> I use a Quickcircuit at work, and I've never had any luck running
> stub endmills any smaller than 8 mils into 1oz board, no matter what 
> the feed rate. 
> Mark B.
> Albuquerque, NM
>

Could you expand on that? What kind of troubles did you have?

I could probably do evetything with a 30 degree v-bit that I need but 
if the boards aren't perfect (few are) then the really fine pitch stuff 
is hit and miss. A tiny bit of a warp in the board can cause over or 
undercutting with a V-bit. The endmill is appealing in that trace width 
doesn't vary with depth.

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.