I received my F! Ultra about 5 days ago, it took me a day or two to get all the ventilations hooked up and then I started doing some testing on some metal cards. All went pretty well, a few revelations and a few adjustments, then I tried to do an embossment on a coin, and I did the first side on Friday. Then I had a ton of work to get done this weekend and was unable to get to it, so today I tried to do the other side of the coin and the fiber laser started but about a millimetre into the first pass on the coin, the laser stopped firing. Now I can not seem to get the fiber laser to fire at all.