I'm actually impressed with this kit... I wish it was the first printer i had bought... he fixed probably 99% of the issues that the original 12" had, the biggest being the wooden Y carriage that warped uncontrollably when at temp... though I will say a 12V 30A power supply is barely enough for the printer. The bed alone needs a 12V 30A power supply and a 20A powersupply for the hotend and electronics if you want the bed to heat in under 45 min to ABS temps...