I have an Ortur LM3 and it works fine, NOW. I had no end of problems with bad parts requiring the to ship from China. It took more than 3 months to get the right parts.

Once I got all the parts and put it together, it works well.

They also let go the one guy who gave terrific tech support.

Understand that there are other things you need to buy to make it functional and do not forget fume exhaust unless using it outside.