Kossel Mini hexagonal heat bed holder

A parametrizable holder for mounting a hexagonal heat bed raised by some millimeters on a Kossel Mini. Suitable for Kossels with 15x15 extrusions. Height and other dimensions can be adjusted easily by changing proper variables in the OpenSCAD file

Note: The bed will be raised slightly by about 12mm, to have enough clearance for the large thermal fuses, the RAMPS LCD connector (RepRapDiscount Controller) and my cork insulation.

What you need

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Parts used (BOM)

• 3x glass bed holders (printed)

• 6x M3x20mm allen head screws

• 6x M3 nuts

• 1x hexagonal pcb bed heater

• 1x borosilicate glas bed 170mm diameter, 3mm thick

Tools used

• Screwdriver or allen-key suitable for your M3-screws
  https://amzn.to/45a8DPQ

Suggested print settings

• Rafts: No

• Supports: No

• Resolution: 0.2mm layer thickness

• Material: ABS/ASA recommended, PLA did work for me

Instructions

Note: Before installing your heating pcb you should insulate its bottom. It helps heating up much faster and protects your electronics and cables from heat. I used some 3mm thick cork.

Important: Turn off power and remove USB cable before working on your electronics. Don't risk frying your RAMPS by shorting some contacts!

• Slice model and print three heat bed holders.

• Mount all heat bed holders with screws and nuts into position, but don't fasten it yet.

• Center the front holder and move the others to the back by sliding them within the aluminium extrusions.

• Install cables from heat bed.

• First insert pcb on its side with the solder joints from the thermistor into the front holder.

• Mount remaining 2x glass bed holders by sliding them in from the back onto the pcb.

• Center all holders and put glass bed on top.

• Adjust glas bed brackets till the glass bed is centered.

• Fasten all screws.

• That's it. A nice, raised and stable heat bed. 😉