M3D Micro Heated Bed Spacer

thingiverse

I was sick of bad bed adhesion on my M3D Micro when trying to use ABS or even PLA. I did not like the heated bed options that were out there and created my own that minimized printing volume loss. Just a bit of height is lost for my proto in order to easily bring out wiring. I will be making another proto later that uses a sized piece of borosilicate glass to fit into the existing place of the plastic bed. I have integrated a temp. controller, silicone heaters and a power supply to drive both heaters and am later making a quick circuit to close a temperature loop using the temp. controller. My plan is to go solid state and implement a PWM current source to minimize power draw. The relay output from the temp. controller will work nicely as a command. I am creating a set of instructions along with a parts list. Once I get this completed, anyone can just drop me a note and I can send them a .pdf of the build. Some light sanding of these parts to get a nice snug fit into the existing counter-bored holes in the base of the Micro works great. I spent about 30 minutes assuring the height of each spacer was consistent to assure little bed leveling issues. The mass of the glass is more than adequate to not require hold down parts. I wanted some forgiveness if the printer grabbed a piece of errant plastic and put pressure on the bed. Let me know if you want more detail of the design and I can send you information Instructions Using the following options: I used PLA at low density for a start on the proto's. I will eventually make some ABS parts now that I can get them to stick to the bed