While doing a prototype of my first project I noticed that my cuts were not where I had put them in the GFUI. After some initial experimentation I decided to simplify everything and just test cut a 1"x1" square at various places around the GF bed. What I found is the cuts are actually shifted up ~.2-.3" and to the right ~.06-.3" depending on where on the bed the cut is done. I’m interested to know if others see such shifting or if there is a way to stop it shifting entirely.
I created a design with 3 rows of 4 1"x1" squares using the same SVG file for each square. I marked the upper right corner of each on the .126" cardboard and aligned the artwork to each one as best I could at 200% magnification. The final setup looks like this:
This is the final output:
As you can see, the shift is more pronounced the closer the cut is to the upper right corner of the bed. I did 5 separate tests using the same 1"x1" square and consistently get those same results.
I have only cut 3 small projects before now (e.g. the sample ruler in the Catalog and a couple coasters with minimal artwork) so I did somewhat ruled out (ok, dismissed) the shift being caused by my GF needing cleaning. Looking back now, all my cuts after the first one were not quite aligned to the material which up until now has been the 1/8" proofgrade Walnut. (I admit I was too excited about doing my first cut to notice if there was any skewing or not.)
I will do a close examination of all the belts and internal mechanisms as well as a good cleaning all around. However given every cut has been shifted at least since the 2nd and I am only up to 8 now (including my 5 tests for this post) I am inclined to think the issue is not due to contamination yet.
Does anyone have any other suggestions about the cause or how to get rid of it?
I have more detailed photos of the rows and test squares both before and after if that would be useful in solving this problem.