Laserscript user forum

Hi all.. I recently purchased a ls3020 from eBay and am having some Issues with getting it to start and finish a cut at the same place and cut true circles. They all seem to have bumps in them. This does change as it goes across the bed and seems worse in certain places. I think the belts need tight...

All, I purchased a second hand laser off ebay which is having some problems since I bought it. It is not cutting perfectly circles or any shapes and circles end up not-round with a bump in and the start and end points not matching up (see attached picture). It seems to be worse the further left of t...