HELP, PLEASE (errant profile cutout)

[nlalston]

The picture illustrates a huge problem I had, yesterday, with a carving that I was doing for the cousin of a friend.  I noticed, early on, that my DC 1/8"EM must have been a bit on the 'sick' side (dull), due to the unclean cuts which resulted (at least I HOPE it was due to dullness of the bit, and nothing more serious).  In no way was I going to present this to my friend, but decided to go through the full process, to gain assurance that everything else would travel smoothly.  If so, I would re-carve as soon as I got more whiteboard (dry erase board) stock.

However, during the ninth inning of the carve something strange took place.  I was into the through-cut profiling action, and - in the 2nd pass, the bit engaged in very errant pathways.  The stock material was a 20"x16" size, with a 1/32" DOC, and (if memory serves me correct) 6 passes for the cutout.

I have also attached the cut file, in hopes that something within it might shed some light.  Advanced thanks to anyone who might try to help me.

The damaged carving shows two crosses, which are not in the cut file. That's because I forgot to save the file after adding those in.  But, everything else is the exact same.



Gun Warning Sign 8.crv3d (4.81 MB)

[savannahdan]

Nathan, sorry I can't review your file since I have an older version of Aspire. One of the things I notice is you say you're using a 1/32" em to make the cut-out. That's a very small bit even though you're cutting into relative soft wood. For the size I'd step it up to a 1/4" em. Another culprit would be static. This usually occurs when you're using a dust collection system without proper grounding. When I first got my Axiom I got on a rush and was cutting a choice piece of spalted Pecan and the bit ran crazy right at the end. Ruined the wood. I then paused and installed the grounding wire throughout the dust collection hose and to the grounding on the dust collector. Ideally, I would install a grounding rod outside and run the grounding wire to it.

[nlalston]

Nov 9, 2023 8:06:58 GMT -5 savannahdan said:

Nathan, sorry I can't review your file since I have an older version of Aspire. One of the things I notice is you say you're using a 1/32" em to make the cut-out. That's a very small bit even though you're cutting into relative soft wood. For the size I'd step it up to a 1/4" em. Another culprit would be static. This usually occurs when you're using a dust collection system without proper grounding. When I first got my Axiom I got on a rush and was cutting a choice piece of spalted Pecan and the bit ran crazy right at the end. Ruined the wood. I then paused and installed the grounding wire throughout the dust collection hose and to the grounding on the dust collector. Ideally, I would install a grounding rod outside and run the grounding wire to it.

Thank you for your input.  I haven't revisited the file, but I think I meant to say that I had a 1/32" DOC.  If memory serves me correct I believe my EM was a 1/4" variation, for the profiling/cutout procedure. 


However, you brought up a point which may, very well, have been the culprit for the experienced waywardness of that bit.  I had heard, before, how a 'static attack' could wreak havoc on CNC operations, but guess I thought that I (somehow) might have been exempt  .  After having perused what you wrote, I also did a little more researching on how to effectively go about grounding my dust collector hose, and found that some other CNC'ers had suffered the very same thing, that I had.  A  point of relief it was for me, as the situation didn't spell out anything more serious.  I will be addressing that 'grounding' matter before I involve myself into any projects.


Again, many thanks. 

[jvask]

Looks like in the Job Setup XY datum that the "offset" was used.

[Bob]

Nathan,
Did you find a solution?
Bob

[jgarciaa]

Nov 1, 2023 11:57:28 GMT -5 nlalston said:

The picture illustrates a huge problem I had, yesterday, with a carving that I was doing for the cousin of a friend.  I noticed, early on, that my DC 1/8"EM must have been a bit on the 'sick' side (dull), due to the unclean cuts which resulted (at least I HOPE it was due to dullness of the bit, and nothing more serious).  In no way was I going to present this to my friend, but decided to go through the full process, to gain assurance that everything else would travel smoothly.  If so, I would re-carve as soon as I got more whiteboard (dry erase board) stock.

However, during the ninth inning of the carve something strange took place.  I was into the through-cut profiling action, and - in the 2nd pass, the bit engaged in very errant pathways.  The stock material was a 20"x16" size, with a 1/32" DOC, and (if memory serves me correct) 6 passes for the cutout.

I have also attached the cut file, in hopes that something within it might shed some light.  Advanced thanks to anyone who might try to help me.

The damaged carving shows two crosses, which are not in the cut file. That's because I forgot to save the file after adding those in.  But, everything else is the exact same.



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