Hi Patrick You're starting the shape with the tool already "gouging" the outline. You need to add a lead-in move. If you start at X0Y0 instead of X1Y1, I'll bet it works, but only with G41. You're going around the box "clockwise", and want the cutter on the outside, so you need the cutter on the left hand side of the path.
There's nice cutter comp documentation in the emc2 user manual, around page 162. You should have the manual availabe in the EMC2 menu, and it's also at <http://www.linuxcnc.org/docs/EMC2_User_Manual.pdf>. Hope this helps. - Steve Patrick Ferrick wrote: >Hi everybody, > >I've been trying to get cutter radius compensation working, because I'm >getting a little bit tired >of adjusting my CAD drawings for the radius of my cutters, so that the >parts come out the >size they are supposed to! I've read the appropriate parts of the >manual, and a few other >online resources, but it still isn't behaving. Obviously I'm not >understanding something. > >My test program cuts a 1" square with its lower lefthand corner at >0,0. It doesn't get much simpler >than that! Here's the gcode that I'm using: > >G00 X1.0000 Y1.0000 >Z.10 F20 >G01 Z0.047 >Y2.0000 >X2.0000 >Y1.0000 >X1.0000 >G00 Z1.0 >M30 > >That code works, no problem at all. >Then I added the following to the top of the file: > >M6 T1 >G41 D1 > >My tool table contains one entry, a 0.125" diameter >endmill. Length is zero. > >I expected the tool to follow a contour 0.0625" away from the outline of >the square, and >instead I get "concave corner with cutter radius compensation" when I >reload the file. >Same thing if I try G42 instead. > >Could somebody give me a clue, please? > >thanks, >Patrick > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
