Hi,
When I cut a hole, (arc lead -in and -out) head touches material at the end of cut. I have Anti dive ON, Pierce height 5mm, Cut height 3mm  and Thc300  corrections Max=20mm and Min=-10 mm.
What is wrong?
Please advise
mrpeja

Hello,

Sorry if this message resurrects this old post, but I have the same problem using Sound Logic's THC300D and Hypertherm Powermax 1250 being controlled by Mach3 (plasma mode)

Tried to leave anti dive on and off and the same occurs - torch insist to dive and touch material at the end of cut.

I hope someone can give me a clue.

Thanks

Fabio Gilii

Sorry for the "bump"

Found another thread where seems a colleague solved the problem using a "brain" solution.

http://www.machsupport.com/forum/index.php/topic,8202.msg56660.html#msg56660

Hi guiacnc,
 I had this problem with holes, when piece falls down. I solved this by "none lead out" for holes in SheetCam
mrpeja

Mrpeja,

I had the same idea - to eliminate the "leadout" part...

Today we are using Lazycam - Will use Sheetcam too!

Thanks and best regards.

YEP do not use the leadout with an inside cut. When you get back to the CUT area to do the leadout the large open space causes the tip voltage to rise and the THC see this and lowers the tip to try to maintain the preset voltage level.

Also with the leadout the torch may loose arc and shut mach down as well.