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Heated Bed Build


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Posted · Heated Bed Build

Hi,

So I am making some progress with my heated bed build. So far, I've gotten:

PCB heatbed -

http://reprap.org/wiki/PCB_Heatbed

This mosfet:

http://www.datasheetcatalog.org/datashe ... B603AL.pdf

a 10k thermistor

a 12V @ 20A power supply from

http://www.ebay.com/itm/110840547570?va ... 1497.l2649

and a sheet of kapton film

http://www.ebay.com/itm/280813434730?ss ... 113wt_1193

I just ordered some 3/8" polycarbonate

http://www.amazon.com/dp/B000G6QQ7Y/ref=biss_dp_t_asn

I plan on making a mount out of the polycarbonate for the PCB (polycarbonate should easily handle the required temp), temp sensor will connect to the bottom of the PVC (I will probably have a big chunk of the bottom cut out so the PCB can heat and cool more quickly). The mosfet will be inline with the power supply, and connected (along with the thermistor) to the ultimaker control pcb -- thus it will not drain any current from the ultimaker. And I'll just cut a piece of kapton to fit on top. I can switch to glass if it doesn't work well, but I happen to have a ton of kapton film that i can't use for my original application so I'll try to use it here.

Hopefully it will not be too difficult to calibrate it all.

Anyhow, let me know if anyone has any thoughts. i'll post build progress here..

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    Posted · Heated Bed Build

    I've been working on a heated bed myself. I've got the bed powered using a surplus xbox360 slim power supply, but I haven't hooked it up to the Ulticontroller yet.

    When you get the mosfet wired in, can you post pics and/or a wiring diagram? The wiki says you can wire it directly somehow, but it's not clear enough for non-electrical duffs like me.

    My bed is machined from .25" aluminum. the top face had a rough surface, so I lapped it on a surface plate and applied a layer of kapton to both sides.

    Kyle

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