Hemera Mount for Biqu B1

This is a mount to attach the E3D Hemera to the Biqu B1. It uses the standard USB-C cable and PCB and takes the Biqu B1 design into consideration (for example, allow the carriage to move over the X idler to have the full 235mm width of the printer available).

I did design and test this prior publishing it here, but I cannot give any warranties that it will work.

If you find this useful, please consider dropping me a bit of money (5€ or 5$ recommended): paypal.me

Required hardware:

• 3x M3 25mm ISO 7380 bolts
• 1x 10mm plastic spacer for M3 screws
• 3x 3mm self-tapping screws for plastics. Alternatively you can cut an M3 thread and use regular M3 screws or try wood screws.

Additional Prints

• Print a Hemera fan duct which mounts to the front mounting points
• I’ve used this fan duct with this fan duct mount

Printing instructions:

• Print using supports and remove supports afterwards. I’ve used PETG, but PLA should probably be fine.
• Remove all support material after the print, take care to remove all supports which prevent the PCB from laying flat
• Test if the screws fit. If you have over-extrusion, they might not fit and you need to drill out the holes using a 3mm drill.

Assembly notes:

• The clearances for the screws given by E3D are met, but please double-check with the actual print and your actual screws. The length of a 25mm ISO 7380 M3 bolt can actually be +-0.4mm.
• The designed clearances also should take care of bridges and overhangs to allow proper screw clearance.
• Note that I did solder on a 2.54mm pitch screw terminal to attach the heater wires. However, since this requires exact crimping of the wire ferrules to fit into the screw terminal, I recommend to solder the heater cardridge wires to pre-crimped wires. The E3D heater wires are way too big to fit into the correct crimps for the PCB connectors.
• Mount the Biqu B1 PCB on 3 points (top left, bottom left, middle bottom)
  
  Put the 10mm plastic spacer between the PCB and the upper plate (middle top screw hole). You might need to use a file to clean up the overhang to make the 10mm plastic spacer fit.
• Insert the 25mm screws into the remaining screw holes
• Insert all cables (don’t forget the part cooling fan)
• Attach the Hemera to the mount. I did use the middle top screw first, then the remaining two screws.
• Use zip ties to secure the cables in place. I have provided a small mount for that (rectangular thing on the lower right)

If you find this useful, please consider dropping me a bit of money (5€ or 5$ recommended): paypal.me

This mount is based on the Biqu H2 mount for the Biqu B1 by DaStivi.