Insulated Heatbed
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Requirements
- Insulated bed works with OSE Thermite Bed, 12/24V industry standard, and 8" silicone heatpad. Smaller bed may be used, such as 6 or 4 inch, and can work decently because of 2" insulation layer.
- Nichrome heater, butt connectors
OSE Build
Nichrome Heater Theory
- Nichrome Wire Calculator assumedly covers radiation loss only - as no information is given on conduction, or convection
- In a heated bed application, the real temperature will be determined by conduction to steel plate and convection to air. The complication comes from how much thermal insulation occurs due to the fiberglass coating of the wire.
BOM
- Fiberglass sleeve - [1]
- Butt Crimp Connectors - [2]
- Binder Clips - [3]
- High temp wire - $13 for 100' - 200C - [4]
- Nichrome Wire, 26 ga - [5]
More
- Binder clips, 3/4" or 19mm - hold up to 1/3" - [6]
- Butt crimp connectors , uninsulated - [7]
- High temp butt connectors to 500C - [8]
- Insulate with Kapton tape or fiberglass sleeve after butt connectors
- High temp wire nuts - 50 cents - [9]
Links
- Materials sourcing - 120V Heatbed
- Check out different ways to do a heatbed - including resistors and nichrome - [10]
- RAMPS on 24V