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300x300mm PCB heatbed

Posted by Shakthi 
300x300mm PCB heatbed
March 31, 2021 01:56AM
Hello everyone,

So I am trying to build or design a 300x300mm PCB heat bed using KiCad, I wanted to know if there are any reference designs or if someone has already done it for this size.

I know that there is already a post on a similar topic for a large heat bed, but since it was posted years ago I wanted to know if anyone had any new ideas and maybe a fresh perspective on it.

Any help is much appreciated.

Thank you
Re: 300x300mm PCB heatbed
June 02, 2021 06:06PM
Before you get too deep into the project, you might want to calculate the time required to heat up the bed based on size, material, and power applied. See: [jscalc.io]

In general, it's not a good idea to use DC power to heat the bed, especially if it's 300x300mm or larger. A heater doesn't need DC or regulated voltage, so it's better to use AC switched with an SSR. You won't need a big power supply or fat wires.

Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]
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