


3 problems. What am I doing wrong?
I have a shapeoko pro XXL with the router and I got 3 problems I need help with. UPDATE: I'm using carbide create and motion. I do have vcarve pro too, but I refuse to believe this is a software issue.
PROBLEM 1:
I mostly use carbide3d's endmill starter bit pack, and every time I run a deep pocket or profile cut, especially on curves, I get horizontal lines on the edges that correspond to the depth pass I believe. I've been told it's chatter because I used downcut spiral bit and I should use a compression bit.
I've even tried upcut bits, last pass to clean up etc and still get that. Then I bit the bullet and bought an up/down compression bit, asked gemini to give me the recommended setup for dpp, feed rate etc. Lo and behold I got the same old results. In fact this time I even got screeching for the first time.
After decreasing dpp and bumping up feed rate (no screeching), I got a clean top (yay) but the horizontal lines still persist...
PROBLEM 2:
every time I cut of the tabs, I use a jigsaw first, then I clean up with a chisel. I end up with the tab's "end grain", so it's never clean.
Been trying this for a few months now, tried researching a bunch but still no success. People even say "it's because you're using a desktop hobby machine" as if it were just a $2.5k toy...
PROBLEM 3:
I designed for a 13" diameter circle (6.5 radius) and the end result was 12 15/16". Why? How? Don't need to lecture me about the tape measure tab/gap thing. It simply doesn't make sense.
Please help! I'm not giving up and yes I know about the "learning curve", but I'm patient vs trying to find out.