file Frage Problems transiting between carves

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17 Feb 2019 12:40 #55990 von SandyM
Problems transiting between carves wurde erstellt von SandyM
Only really just starting to use my Stepcraft 420. I've got an order for 200 fish from 6mm MDF with an eye cut in each. Seemed simple enough until the Stepcraft started cutting the eye in the wrong place!

The file is created in VCarve Desktop and I've checked and rechecked it and there are no phantom layers, vectors to tool paths to cause this problem. I recreated the file from scratch more than once and still have the same problems.

Getting nowhere with VCarve I next started delving into the GCode it produced. The problem always seems to be in transiting from one area of carving to the next so I checked the transit code and it all looks OK as far as I can tell with a very basic understanding of code..

I then created a test file which I haven't tried to actually carve but ran on my machine with no spindle. The problem became clear that on occasions the machine would lift from one carve and not transit correctly to the next carve, almost as if it got the X and Y axes confused, or it simply stopped in mid-transit.

It only ever happens on transit between carves and never in the middle of a carve itself. You can see this on the video at 2.02 and 2.59 on the video listed below.

In the GCode the problems occur at lines N12010 and N17940

I’ve now convinced myself that the problem is either with UCCNC or the Stepcraft machine itself, but no idea which!

The GCode file is here: www.dropbox.com/s/4qu4kuy1x7ii3i1/Test%20-%20six%20fish%20one%20pass.txt?dl=0
The VCarve file is here: www.dropbox.com/s/eql02cdch7ucd46/Test%20-%20Six%20Fish%20One%20Pass.crv?dl=0
And a video of the Stepcraft doing the carve is here:

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18 Feb 2019 12:54 #55993 von Penidraw
Penidraw antwortete auf Problems transiting between carves
Have you tried turning the speed down?
The rapid moves between cuts could be causing your machine to miss steps
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18 Feb 2019 17:26 #55994 von Rory
Missed steps for sure you need to tune your Axes or turn down velocity.
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18 Feb 2019 22:52 #55996 von SandyM
SandyM antwortete auf Problems transiting between carves
Thanks for the comments. I've turned down the speed between cuts and it's solved the problem at the moment.t I know I now need to align the X and Y axis properly.

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