Alright my 3d printing friends.

3D Printing
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Alright my 3d printing friends. I have a problem I need u to help solve. I have a borosilicate glass bed 3.3mm thick and 700mm D diameter (actual print space little over 630mm diameter). I need to heat this puppy. I’m thinking of running 4 separate silicone heaters in parallel. Any ideas on how to wire this up? Or does anyone have a better a solution? Thanks!

2

thanks for the quick reply, @Ross_Bagley . i was thinking along similar lines. I cant remember, but i think i faintly recall now that @Thomas_Sanladerer running a printer with multiple zones in it or the like as well.

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May i ask where you sourced the large borosilicate plate?

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paid 91.57 , but bad customer service.(grouchy guy). place is called http://wwwcincinnatigasket.com

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if i had to do it over again i’d probably go for 5-7mm thick

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I’ve not had that much of a problem, but I’ll keep an eye out

7

Get yourself something like this. SSR is all you need other than this:

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Agreed with @Mark_Rehorst and @Ross_Bagley . I would get a mic6 bed and put a piece of PEI on it with a silicone heater mat under it and use an SSR on mains power

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Thanks for all the suggestions folks!!!

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SSRs can have control voltages down to 3V. So you can even run one on a spare microcontroller pin if you wanted, saving the FET for something else.

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@Griffin_Paquette PEI directly to aluminum plate? They have enough thermal expansion mismatch that I wouldn’t do that for larger than desktop bed sizes.