Torch continued firing while traveling to next cut

CrossFire ® XR
1

This was a first, just yesterday while cutting .38" steel parts for a power company. Cuts were going pretty well on the first 8 parts. Only thing was I had to make adjustments to my pierce delay, as well as as pierce and cut heights. After making these adjustments, I started the ninth of 14 of these. Well, I watched it proceed through a cut, but instead of retracting and stopping the arc, the torch stayed firing, not retracting but in fact rapidly dragging the tip of the shield across the steel to the next cut at which point it burrowed into that spot while continuing to fire (see attached photo). Of course, I swiftly stopped the program. The shield is ruined. Two more ordered. I am running the Razorweld 45A on the Crossfire XR.
Thankfully, there is not a rush on them receiving these parts, but hopefully I can still have them done by Sunday as requested, but minus one part on the purchase order. Boo!

Anyway, anyone have an idea as to what happened to have caused this?

plasm botch
plasm botch674×1280 179 KB

I appreciate any advice and I am grateful for such an active community in this forum! I am in Waxahachie, TX.

Best regards,
Matt Chrisman
Pax Metalworks

2

Using sheetcam?

3

Check the coupler for slippage on z axis, check IHS switch wires are still connected at switch and check that z axis lead screw doesn’t have debris stuck on lead screw.
If you are using THC,turn it off and try a cut to see if problem goes away, if it does then THC is problem.
Look at IHS switch top tang too make sure it is not pushed into z lead screw.

2 Likes
4

Sorry about the delay.
No, I am using Fusion 360. Not tried Sheetcam yet. Would the software be a culprit in this?

5

Thank you for these tips! Checking it out today and I will post findings…

6

Is there any way you could have accidentally hit the t4 t2 switch on your plasma cutter?