RR V-Core 4 Bed Fan Chamber Heater by PD3D
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Uses 2x 5015 fans to push air over the heater pad, forcing heat off of the heater and into the chamber.
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This mod uses the holes for the front arm wipers to attach the ducts that blow air directly onto your heater.
In just 10 minutes the chamber is able to go from room temp, to ~50C. To get to 60C it takes 15+ minutes. I am using 10mm thick insulation in the outer walls and bottom but the top and front are both 6mm Polycarb that isn't insulated. As of right now I'm able to hold a temp of 75C with a 30 minute preheat at 120, printing with bed at 105 and holds 75C. the chamber temps in my setup seem to stay around 30-35C under bed temp, with more insulation / better sealing I should be able to reach temps of 80C(what i achieve on VC3 500mm with similar setup).
BOM:
2x 5015 Fan(preferably high temp like HoneyBadger)
4x M3x25
4x M3x10(replace M3x8 nozzle wiper screws)
4x M3 Nut
Use [fan_generic chamber_heater_extra_fan] and set to whatever pin you use.
For more info on V-Core 4 Chamber heaters:
https://os.ratrig.com/docs/configuration/chamber_heater
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