Well - I've just spent four hours assembling this laser (I'm sure it could be done quicker - but one does want to be careful). It went without a hitch, except the belt instructions weren't quite right, and were referring to the OTHER belt first! But is was no problem....
Anyway, on completion, following the instructions, plugged it all in (frankly expecting nothing to happen) but did everything - and blow me - the thing did a test cut from a down loaded program perfectly!
Although this is only a thick card, it is a beautiful cut straight off. It must be said, this is a cracking little machine, and I'm delighted with it before it's done anything useful!