PRUSA CORE One Magnetic 3in and 4in Duct Exhaust Adapater

Updates:

• 26-Feb-2025: V4 model
  • Increased the size of the duct adapter significantly
    • increased magnets holes from 4 to 9
    • added a 4in duct adapter
    • requires about 7 in of clearance behind the printer (with duct attached)
  • Requires about 200g of filament and about 7 hours of print time
    • V3 was about half this

Additional Materials

• 8mm diameter magnets (up to 10mm in height)
• 4pcs M3 machine screws 
• 3-4in worm clamp
• 3in or 4in duct (length based on your needs)
• additional hardware based on your needs 

Print Settings

• Print in PETG using any QUALITY or STRUCTURAL profiles
• Set internal perimeters to .8mm to increase strength and reduce print time

Assembly

1. Once printed, press 8mm magnets into the exposed holes
2. Attach M3 screws to the printer, these will locate the adapter to the exhaust port
3. Attach the duct to the adapter using a worm clamp
4. Attach to the printer using the M3 screws to locate onto the adapter

Misc.

• Used my exhaust port reference CAD as a starting point
• While it holds fine, I feel the magnetic strength is weaker than I expected even with 4 8mmx8mm magnets. 
• STEP file included for remixing
• Thanks to rcprsa for pictures of the 4in v4 model