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    CNC boat kits...?
    Aluminium for stables? Perhaps a slab of oak would be more appropriate? I am cutting slices off old oak fence posts for use as coasters and think I can engrave them using the '
    boat motor cutter
    ' - so long as the cut is not deep. A laser would be ideal - but the cost and the danger mean that it needs a bit of thinking about. I must look up the Rumba and mega2560. One issue I have with the Uno and GRBL is that the software does not do 'tool radius compensation'. You have to do this in your conversion, and Dfx2Gcode does not do this either. I do not know if there is a GRBL version running on the 2650 which does do this. Essentially you need a GRBL which implements G41/2 commands, or you will have to do the compensation in your original drawing. I am using sub-milimeter cutting tools for balsa, so the compensation required is negligible and can be ignored, but when cutting ply I may need to worry about it. Your TMC2130s may not need endstops, but the limit switches are also used for homing. You will find that if you want to cut lots of parts out of a single sheet of material, it helps to be able to home accurately. GRBL allows you to have a 'master machine home' and then several subsidiary homes. So, when cutting, I start with the cutter in the master home position in the top right corner, then move it to a secondary home position which is directly over the workpiece top right, then do all of my cutting in relation to that secondary home position...
    5 years ago by DodgyGeezer


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