The rotary came with the used laser, or should I say previously purchased laser, I don’t think the guy had a full hour on the machine. We have played with doing a beer glass once before and it worked fine, but it was just a simple image we engraved and we had stretched it 20% to get it to come out about right (according to things we read on the facebook groups). This is the first time I’ve really played with it.
I can’t find the rotary online, except in this thread… https://forum.lightburnsoftware.com/t/rotary-initial-settings-review/7437
It’s a 200 step motor. The dip switches on the driver are set to 2000 pulses/rev. Motor gear has 20 splines and the roller gear has 32 spines. According to my math, that puts one revaluation at 3200 pulses. Does that sound correct? At 3200 my 1" wide grid comes out exactly 1" wide.
I added a layer of friction tape to the rollers and adjusted the dia. in Lightburn. But the grid was still engraving with the bottom row not not spaced correctly. I changed the settings to engrave all shapes at once and it seams to be working perfectly. I added a box around the grid with the same dimensions as the outside edges of the grid. I wanted to see if it is getting off as it runs, but when it finished filling the grid it came back and cut the outside box dead on the edges of the grid.
So, barring more problems when I start running more complicated designs, I think it’s working now??? But should I have to use the engrave all shapes at once option or is that just a band-aid that won’t always work?