Bibo 2 Touch Hemera Printhead Upgrade

thingiverse

An upgraded print head assembly for the BIBO 2 Touch Dual 3D printer using E3D's Hemera extruders, including an improved part cooling fan shroud and a BLTouch bed levelling probe mount. If using two Hemera extruders with neither of them mirrored, you may have to shrink the printable area in your printer's firmware and slicing software to ensure you don't grind any stepper motors. I have also included a mirrored version of the platform, top plate and fan shroud for people who have been able to obtain a mirrored version of the Hemera extruder. This is an advanced build as you are required to modify your printer to be able to operate the Hemera extruders, which I will not be giving instructions for here. I have provided some rough instructions on how to assemble the print head under the "How I Designed This" section, along with the full assembled model. I recommend using a high temperature material such as Fiberlogy's CPE HT (https://fiberlogy.com/en/fiberlogy-filaments/cpe-ht/) as the print head is usually held over a heated build plate. Support material's are also a must for this print and I ended up using Fiberlogy's BVOH (https://fiberlogy.com/en/fiberlogy-filaments/bvoh/) soluble support material for this which works a lot better than most PVAs. Parts List - Printed Parts: 1x Platform 4x Bearing Brackets 1x Probe Mount 1x Fan Shroud 1x Top Plate 2x Belt Clamps 2x Extruder Adjustment Washers Hardware: 2x Hemera V6 Extruders (12V) (https://e3d-online.com/products/e3d-hemera-direct-kit-1-75mm) 2x Hotend Socks (Comes with Hemera Kit) 8x Hemera 8mm M3 Bolts (Comes with Hemera Kit) 4x Hemera M3 Square Nuts (Comes with Hemera Kit) 2x 40mm Blower Fans (https://www.amazon.co.uk/gp/product/B074FSF2QB/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1) 2x 5mm x 10mm Springs (Same ones used on Bibo's heated print bed) 2x Noctua NF-A4x20 PWM Fans (https://noctua.at/en/nf-a4x20-pwm) 2x 40mm Fan Grills 1x BLTouch Additional Fixings: (You can find multi size M2 and M3 screw packs with all these sizes on Amazon) 8x 6mm M2 Bolts 8x M2 Nuts 4x 25mm M3 Bolts 2x 20mm M3 Bolts 12x 8mm M3 Bolts 19x 6mm M3 Bolts 1x 16mm M3 Bolt 28x M3 Nuts Zip Ties Note - The extruder cooling fans used in the full assembly model and in the renders are not the ones I ended up using the final version. Hence the platform has been designed for Noctua NF-A4x20 PWM fans (https://noctua.at/en/nf-a4x20-pwm). This project has been a big undertaking, having prototyped and printed many failed parts, so any support you can give is much appreciated! Hemera extruder models used in full assembly file from E3D - https://www.thingiverse.com/thing:4016291/files