The following Excellon drill/mill data is rendered as a single hole (or round pad) with a diameter of 31.4961 mil. If rendered correctly, it should be displayed as a milled slit having a shape similar to an Y rotated 180°. Please correct.

example file: ExcellonContourPlated_Y_shape.ncd
containing the following data:

; Version : LOCAL
; Job :
; User :
; Date : Tue Nov 18 10:00:43 2025
; Format : 3.3 / Absolute / MM / Leading
; Contents: Thru / Mill / Plated
M48
METRIC,TZ
FMAT,2
ICI,OFF
T11C0.800
%
M71
G90
G93X0Y0
T11
G00X54000Y2600
M15
G01X55650Y4250
X57300Y2600
M16
G00X55950Y3750
M15
G01X55350
M16
G00X55650Y6800
M15
G01Y3846
M17
T00
M30