RE: [CAD_CAM_EDM_DRO] XY point list for spiral to DXF?

Nice work chuck!

Here's a little Gcode for the spiral.

N0100 (Spiral 01/05/06 alm)
N0110 G20 G17 G90
N1000 G01 X0.4388 Y0.2397 Z0.0000
N1010 X0.5403 Y0.8415
N1020 X0.1061 Y1.4962
N1030 X-0.8323 Y1.8186
N1040 X-2.0029 Y1.4962
N1050 X-2.9700 Y0.4234
N1060 X-3.2776 Y-1.2277
N1070 X-2.6146 Y-3.0272
N1080 X-0.9486 Y-4.3989
N1090 X1.4183 Y-4.7946
N1100 X3.8977 Y-3.8805
N1110 X5.7610 Y-1.6765
N1120 X6.3478 Y1.3983
N1130 X5.2773 Y4.5989
N1140 X2.5998 Y7.0350
N1150 X-1.1640 Y7.9149
N1160 X-5.1171 Y6.7871
N1170 X-8.2002 Y3.7091
N1180 X-9.4731 Y-0.7139
N1190 X-8.3907 Y-5.4402

Alan KM6VV

>
> Here's little ss I tossed together to create polar (linear growth in
> radius)
> cords and then create rectangular. Note the growth in theta is in
> radians.
> Most spreadsheets operate that way. If you prefer degrees you gotta do
> that
> 180 deg = pi radian thing.
>
> start theta 0
> grow theta 0.5 radians
> start radius 0
> grow radius 0.5 in
>
>
> theta radius X Y
> 0 0 0.000000 0.000000
> 0.5 0.5 0.438791 0.239713
> 1 1 0.540302 0.841471
> 1.5 1.5 0.106106 1.496242
> 2 2 -0.832294 1.818595
> 2.5 2.5 -2.002859 1.496180
> 3 3 -2.969977 0.423360
> 3.5 3.5 -3.277598 -1.227741
> 4 4 -2.614574 -3.027210
> 4.5 4.5 -0.948581 -4.398886
> 5 5 1.418311 -4.794621
> 5.5 5.5 3.897684 -3.880472
> 6 6 5.761022 -1.676493
> 6.5 6.5 6.347820 1.398280
> 7 7 5.277316 4.598906
> 7.5 7.5 2.599765 7.035000
> 8 8 -1.164000 7.914866
> 8.5 8.5 -5.117101 6.787140
> 9 9 -8.200172 3.709066
> 9.5 9.5 -9.473135 -0.713936
> 10 10 -8.390715 -5.440211
>
> Chuck Merja
> www.3rivers.net/~chuckm/index.htm
>