m1/button/: milling process for making M1 buttons from a piece of wood

m1/button/Makefile

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+SPOOL=/home/moko/svn.openmoko.org/developers/werner/cncmap/spool/spool
+
+out.gp:		bgen
+		./bgen >out.gp || { rm -f out.gp; exit 1; }
+
+out.rml:	out.gp
+		PATH=$PATH:/home/qi/cae-tools/gp2rml gp2rml 10 1 1 <$< >$@ || \
+		    { rm -f $@; exit 1; }
+
+spool:		out.rml
+		PORT=/dev/ttyUSB0 $(SPOOL) out.rml
+
+clean:
+		rm -f out.gp out.rml

m1/button/NOTES

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+Nominal dimensions:
+
+pusher	1.1 mm x 12 mm
+shaft	3.7 mm x 8 mm
+
+Adjusted dimensions for the first try:
+
+1.2 mm, 3.8 mm = 5 mm
+
+Piece thickness:
+
+7.9 mm
+
+Final size:
+
+pusher	~0.8 mm x 10 mm
+
+http://downloads.qi-hardware.com/people/werner/tmp/m1butwood.jpg

m1/button/bgen

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+#!/usr/bin/perl
+
+
+$pi = atan2(1, 1)*4;
+
+
+sub circ
+{
+	local ($r, $d) = @_;
+
+	for ($a = 0; $a <= 2*$pi; $a += 2*$pi/200) {
+		print $x0+$r*sin($a), " ", $y0+$r*cos($a), " ", $z0-$d, "\n";
+	}
+	print "\n";
+}
+
+
+$x0 = 123;
+$y0 = 19+18;
+$z0 = -39.5;	# piece surface
+$z0 -= 7.9-5;	# depth into piece
+
+
+$ds = 7.8;	# shaft diameter
+$dp = 10;	# pusher plate diameter
+
+$tr = 25.4/8/2;
+
+#&circ($ds/2-$tr, 0);
+&circ(1, 0);
+&circ(3, 0);
+&circ(0.2, 0);
+
+&circ($ds/2+$tr, 0);
+&circ($ds/2+$tr, 2);
+#&circ($ds/2+$tr, 3.8);
+#&circ($ds/2+$tr, 3.8);	# twice, for cleaner cuts
+&circ($ds/2+$tr, 3.9);
+&circ($ds/2+$tr, 4.0);	# twice, for cleaner cuts
+
+&circ($dp/2+$tr, 0);
+&circ($dp/2+$tr, 3);
+&circ($dp/2+$tr, 5+0.3);