Stealthboard has been working quite well. I have run prints ranging from minutes to 10 or so hours and have had zero issues. The board also doesn’t seem to need any active cooling (I am actually running the drivers find without heatsinks).
Last thing we are working on is finding the perfect mosfet for the job. I have a couple of the last tests in the mail now and then we should be good to go!
NOTE: the skipped layer is a result of inadequate cooling making the arch of the benchy curl up. That cause the hotend to smash into it during travel and skip steps.
It looks like you have a layer shifted visible on the arch near the top. Overheating stepper drivers probably
@Panayiotis_Savva negative. I was actually watching while it happened, and saw the lop of the backside of the arch curled up at least half a cm. Drivers ran perfectly the entire print. Have not had a single skipped step because of them.
@Griffin_Paquette No active cooling is a nice feature. The boards can be so much more reliable and quiet. Been running boards with no active cooling now for over a year now with no driver skips or issues at all. When the board and drivers barely reach 80F after 65+ hours of continuous printing you know the built in heat sink is effective. 
@Jeff_Parish completely agree. The drivers on this have a full 2oz/in dedicated ground plane, as well as other semi-plane sections. It makes a huge difference to have trinamic drivers soldered onboard like this vs. using stepsticks.
@Griffin_Paquette Two thumbs up! A 2oz full board area copper heat sink layer sandwiched in the middle is what I have on mine as well. Even though the drivers are soldered on the board I’ve never had to replace them. Silent, cool, and reliable. Well worth the price.
