This caused small prints near the center of the board to succeed, while larger prints that weren’t on the heated portion of the bed would fail.And since the thermistor was on the working half…. it didn’t see anything wrong! That meant only half the heatbed was working. On my printer, only terminal 2 was connected. The wiring diagram on the Mk3a heated bed shows that you need to connect terminals 2 & 3 to ground.External MOSFET for heated bed control.New Mk3a heated bed is 12v/24v capable and warms up quickly. Auto-Leveling with included inductive sensor.Control board has option of adding filament runout sensor.Made it hard to fit the rods in, but nothing a little persuasion from a hammer couldn’t fix. Unfortunately, the holes were drilled the exact size of the rods, then powder coated. Each bracket has two holes for the smooth rods to fit into. I read a lot of complaints from people who received their X5S with broken acrylic Z mounts.Powder coated metal Z-axis motor mounts.Overall I’m pretty happy with it, but there are a few problems. I think this was one of the first X5SA in the USA. January 31st, DHL knocked on my door and delivered a small package from Hong Kong.
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