How to Create a Proper Drill File from Allegro/APD

Comparing Results

We'll compare the results between the default settings for APD NC Drill and the ones recommended in this article. The design is a IC package (in units of microns) with only one via that has a plated through hole of diameter 200 um.



Default Output
;LEADER: 12 
;HEADER: 
;CODE: ASCII 
;FILE: drill for layers M1 and BOTTOM
;Holesize 1. = 7.874016 PLATED MILS
G90
X-00555Y00555
X-00471Y00459
X-00550Y00538
X-00589Y00577
.
.
.
M30
  Recommended Output
;LEADER: 12 
;HEADER: 
;CODE: ASCII 
;FILE: drill1 for layers M1 and BOTTOM
;Holesize 1. = 0.200 PLATED MM   Note units in MM
G90
T01C0.20          tool select!
X-17015Y-14385
X-16971Y-13660
X-16971Y-12660
X-16971Y-11660
.
.
.
M30


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