Sherline 2000 CNC

Sherline 2000 CNC - Part 7

8-24-2004

PCB Drilling

I don't get the point of PCB milling (maybe I'll try it and change my mind), but I wanted to try drilling a PCB with my Sherline.

First step, find an Excellon to G-code converter. Hmm, thought there were dozens available. No luck. Time to write one: Drill.pl

Here is the output. The input file is in the output file (shifted and commented with semi-colons).

G92 X0 Y0
G81 X Y R0.010 Z-0.100 F5 ; Edit this line as necessary.
N1000                      ; --- M48
N1010                      ; --- T01F00S00
N1020                      ; --- T02F00S00
N1030                      ; --- %
N1040                      ; --- T01
N1050  X02. Y01.5          ; --- X02Y015
N1060  X02. Y01.05         ; --- Y0105
N1070                      ; --- T02
N1080  X02.255 Y01.15      ; --- X02255Y0115
N1090  X02.255 Y01.25      ; --- Y0125
N1100  X02.355 Y01.1       ; --- X02355Y011
N1110  X02.255 Y01.35      ; --- X02255Y0135
N1120  X02.355 Y01.2       ; --- X02355Y012
etc...

How does it work? Much easier then drilling all those damn holes by hand! And much more accurately placed.

<< Part 6