Oven: Drying Filament Dispenser

Used oven converted into drying filament dispenser.

Loaded with ceramic tile for safety and thermal insulation.

Consumes ~ 7W power in steady state at 50°C inside and 25°C outside.

Temperature range for continuous 24/7 operation:

• PLA: 50°C - safe; 55°C - starts to stick; 60°C - spool fuses in 1 day
• Nylon: 50°C - safe; 95°C - safe, dries 4x faster, consumes 3x more power;
• therefore use same temperature of 50°C for all filament types, maintenance-free

Example usage with nylon which was initially stored at 25°C and 40% humidity:

• criterion: from visible bubbles in the print to no steam bubbles in the print
• 3-4 outer-most layers become dry in 4-5 hours at 50°C, need to wait
• inner layers dry continuously during print, no need to wait
• 1kg spool full drying time is about 10 days at 50°C

Parts:

• 1 x used oven with ~ 8Hx10Dx12L" inner space
• 8 x 4x4" ceramic tile on the sides
• 4 x 6x6" ceramic tile in the back
• 6 x 9x12" ceramic tile on top and bottom
• 1 x PC4-M6 socket on a side
• 1 x PTFE guide inside

Used with:

• Turntable: Spool Plate
• Hanger: Thermometer Bracket