First off I got the new bitsetter, and holy cow has it transformed and streamlined my workflow. I feel so much more confident that I can keep precise z-depths when changing bits, especially since my art projects tend to require a lot of changes throughout the job.
I am having one weird thing though, and maybe you guys can help me figure it out. The bitsetter really does seem to be very precise, especially when I am using regular endmills. However, when I change to a v-bit, I find that I will often need to manually measure and adjust the carving depth in aspire.
For example: I cut a .3 inch pocket, with a .015 finishing pass so I know the depth is nice and accurate. Now I want to carve into that pocket with a 60 degree v bit. If I just carve at a depth of .3, it will often carve just a tiny bit too high.
My workaround is to manually zero the v bit to the new surface using the paper method, look at the z coordinate in Carbide Motion, convert to inches, and then save the file with that new z depth (it’s often something like .307, which is close, but those thousands of an inch can make a big difference with fine details and small lettering. It’s been as high as .1 in the past.)
Now, one thought I had is that maybe it’s because I just installed a new z-belt, and maybe there is some stretching out in these initial runs? It seems like I was getting a much larger variance a couple days ago, which makes me think maybe this is the issue. Or maybe I need to support the center of my work bed because it’s warping as I work? But I’m only carving at depths of .1 - .2 inches, so I can’t imagine I’m putting that much force on the machine.
The cuts are always a little bit deeper than they should be, not shallower, which tells me I’m not losing z-depth, I’m gaining it somehow. Or that the bitsetter is somehow measuring my v bits slightly differently than it does my regular endmills, but that doesn’t really make any sense. Maybe the bitsetter button is tapered a tiny bit, and my v bit isn’t hitting it dead-center?
Anyway, sorry for the long post, just wondering if anyone has had a similar issue.