Turning DTHC On/Off in Sheetcam Development Version

garybdavis · Post by **garybdavis** » Thu Mar 27, 2014 3:16 pm

I've started using Sheetcam's development version mainly for the cut rules feature. Up until now, I've created two separate tools for the same material - one with DTHC-1 and one with it off (DTHC-0). I use one tool or the other depending on what I want. I leave DTHC off for the short, inside cuts which are done first. I watch the tip volts so I can make an adjustment if need be before the longer cuts start where I need DTHC on.

I was thinking of doing away with the duplicate tools, have just one with DTHC on and using a rule to turn it off before the start of cut for those times when I want it off. When I do this I end up with S20 and S10 commands back to back but I suppose that's ok. An example is shown below.

Three questions:
Is there a better approach to do this?

Can you get the rule to put the code snipet on a separate line? I'd like to figure out how to do this for simplicity when I look at the gcode.

Does it affect in any way how the gcode is executed?

Thanks,
Gary

N0690 G28.1 Z0.50 (Start Touch-Off )
N0700 G92 Z0.0
N0710 G00 Z0.1500
N0720 M03
N0730 G04 P0.6
N0740 G01 Z0.0600 F100.0
N0750 S20
N0760 S10 (DTHC OFF) G02 X4.5407 Y0.7834 I0.1337 J-0.0879 F48.0
N0770 X4.6090 Y0.4334 I-0.1369 J-0.2084
N0780 G01 X4.6083 Y0.4323
N0790 G02 X4.5887 Y0.4050 I-0.2423 J0.1533
N0800 X4.5834 Y0.3987 I-0.1774 J0.1429

Post by **Les Newell** » Thu Mar 27, 2014 4:34 pm

I was thinking of doing away with the duplicate tools, have just one with DTHC on and using a rule to turn it off before the start of cut for those times when I want it off. When I do this I end up with S20 and S10 commands back to back but I suppose that's ok. An example is shown below.

Three questions:
Is there a better approach to do this?

That is the way I would do it. Having S20 and S10 back to back should be ok.

Can you get the rule to put the code snipet on a separate line? I'd like to figure out how to do this for simplicity when I look at the gcode.

That is bug. I'll look into it. What version of SheetCam are you using?

Does it affect in any way how the gcode is executed?

It shouldn't.

garybdavis · Post by **garybdavis** » Thu Mar 27, 2014 5:19 pm

I found a bug? I get a gold star!

Sheetcam TNG 5.1.34

I might be to new at this to make a proper suggestion, but having a DTHC On/Off check box in the cutting operation rather than the tool would be something I would use often.

Thanks,
Gary

Post by **Les Newell** » Thu Mar 27, 2014 6:17 pm

That sounds like a good idea. The DTHC stuff is all controlled by Tom's post processor so it may be an idea to suggest this to him.

m 8urt0n · Post by **m 8urt0n** » Mon May 05, 2014 10:00 pm

Can you get the rule to put the code snipet on a separate line? I'd like to figure out how to do this for simplicity when I look at the gcode.

That is bug. I'll look into it. What version of SheetCam are you using?

I have the same bug on 5.1.35 DEV.