I am currently building a CoreXY with duet 0.8.5.

The heatbed that I got is a 24V 350W 350 x 350mm. I currently have 2 power supply:

• 24V 150W power supply (3D printer)
• 24V 350W power supply (heatbed)

I was hoping to use the 350W for the bed and the 150W everything else.

From what I found, it is possible if I use a SSR (Solid State Relay). from my understanding I would require 1 for the 350W of approximately 24V & 15A.

I am looking for suggestions, make and model wise, are Aliexpress Chinese version good or should I go with specific make and model?

Also, if you have reference to a guide for Duet boards & SSR.

Thank you.

It's all covered (I think) at [duet3d.com]. 15A is within the rating of the Duet WiFi but a little high for the Duet 085. However you can add a wire link on the back of the 085 to increase the rating.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Since neither power supply will run the bed with anything left over to run everything else, even if the board would handle it, it would probably be cheaper to get a good SSR than a new power supply of the power required.

Do not even think about skimping on the SSR. The cheap ones fail a lot and fall "on.". Crydom and Auber are purported to be good brands. I use Crydom D1D40s on my machines and have no complaints. Make sure to run a heat sink with thermal compound too.