After building a new PCB heater, I ran into a bit of a problem. The PCB Heater is in 4 sections, each with a resistance of about 0.85R. I know that's very low, and puts a tonne of power across it, but I wasn't getting near enough heat out of the last few heater solutions I was using. Long story short, I fried my 21A power supply pretty quickly. So, I invested in a new 700W ATX PSU, rated for 58A at the +12V rail. This has 2 problems, however. Firstly, as with all ATX PSUs, I don't need the 23million cables coming out of it. I need 6. 3 x +12v, and 3 x GND. Secondly, the cable is 18AWG, which I don't think will hold up to the ~16A needed for the print bed. So, I'm trying to work out a suitable solution.
So what are my options here? Can I run 2 or 3 of the 12V wires from the ATX to the HPB contact on the board, like this:
![9pywzm.jpg]( "9pywzm.jpg")
Also, I have heavier gauge wire, but I'm not sure of the best way to wire it up. I'm reluctant do desolder the 12V wires from the ATX's board to replace them with heavier wire. It's a messy job, and I'd rather a different solution if there's an easier one...
So what are my options here? Can I run 2 or 3 of the 12V wires from the ATX to the HPB contact on the board, like this:
Also, I have heavier gauge wire, but I'm not sure of the best way to wire it up. I'm reluctant do desolder the 12V wires from the ATX's board to replace them with heavier wire. It's a messy job, and I'd rather a different solution if there's an easier one...