hey i just saw these today, i was thinking they might make a good heated bed element. https://www.sparkfun.com/products/11289

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[mike-mack.blogspot.com]

Is 63C sufficient for heated bed applications?

I think its on the low side. But I think at 12v it would get there no problem.

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[mike-mack.blogspot.com]

RS Components do very similar things, including ones driven by 240V AC. They are much more powerful than these.

Look for part 245-635 and others like it. So handle the 240V AC, you could try a solid state relay like 476-656.

I just saw that product too, & was wondering the same thing.

Does anyone know of a source for a larger version?

I got 2 to try it with. They were cheap enough I thought

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[mike-mack.blogspot.com]