heated bed

y-axis support for the heated bed:

made of 5 mm aluminum:

I used structured silicon layers with kapton inbetween to make some good insulation.

I removed some of the insulation to screw the resistors. I have 4x 4.7Ohm in parralel at 12 V and 2x 1 Ohm in parallel at 5V. So I have around 10 amps on each Voltage and more then 150 Watts heating power.

Glueing the temperature sensor in the middle. Adding more insulation layers.

 Top View:

Here you can also see the temperature controller. It automatically finds the best parameters for PID which saves a lot of time. Less work, more coffee.