300x300mm PCB heatbed

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
Shakthi

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.

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