The best feature is its slim design. Very low profile. The title gives its biggest flaw, anything with a candle, cups/bugs or tankards with handles are very limited without careful placement. With any round items, this roller can handle anything that you can fit under the laser, may need with risers with some lasers. The distance between the rollers has quite a bit of adjustment and the rollers have rubber covers to help with grip. If its slips, its a sign your speed is too high but with the right settings, most things can be successfully engraved.
Comgrow Universal Rotary Roller Module for Laser Engraving
So I wanted a rotary attachment for my Comgrow 5W laser engraver and decided to stick with Comgrow's brand and was not disappointed. It was well packaged and fairly simple to connect, suggest the many Youtube videos for setting it up, and I was engraving with it in less than 20 minutes of opening the box. One thing to keep in mind is not to enter the $101=65 in the device console like I did because this sets the steps for the Y axis in the controller all the time. Instead set it where it's suppose to be in Lightburn under "Laser tools" rotary setup and you will be fine. I was able to contact Comgrow support via email on the weekend and they promptly emailed me back with the steps to set it at that I overrode in the console, which is 80 to get back to the fefault.
Product was shipped fast and well packed. Easy to set up and use.. End roller assembly makes it easy to engrave stemware. Great product.
Great laser engraver to get started. Compared a few machine with similar specs and decided with this one and have no regrets. Only thing that would be nice is having the ability to flip over the laser plastic cover so you can see the laser better when framing instead of having to raise the whole laser assembly up. Other than that I recommend it.