A well-tested BIQU H2 Carriage, designed for the AM8/A8 and other similar printers. Many hours of printing already on my unit and it holds up perfectly. Great ABL, incredible fan performance, high-speed printing capabilities, and all-around space-efficient design. 

New MGN12 version!! Check here! 

Specs!

• BIQU H2 direct drive extruder
• 2x 4010 blower fans, custom designed ducts
• Prusa SuperPINDA / 8mm inductive probe (of your choice!)
• High-speed capable, up to 250mm/s

NOTE: the two fan ducts included in this design now have their own design pages, allowing for users to find them easier if they don't want to use my carriage. Primary fan is here, secondary is here.

Parts!

• 1x 4020/10 case fan
• 2x 4010 blower fan
• An ample amount of filament
• an H2 with 4 M3 screws for full mounting
• 12x M4 screws to attach to the bearing blocks
• a SuperPINDA (or any 8mm inductive probe)

Extra info! 

• Probe offset is -21mm in X by my render, no offset in Y.   Put your Z-offset into the following code, then send to printer. Made for Marlin!!      M851 Z__  X-21 Y0
• You may need the extra homing bump for this design if you're running an Anet A8.

Assembly!

Make sure to tighten up the carriage base to the bearings first, then mount the H2 on it. To put in the SuperPINDA, take the fan adapter and twist the PINDA in, then just twist the adapter around it. The idea here is that you don't end up twisting your cables... You may then screw it in to the H2, followed by adding the 4020/10 fan. The rest you can figure out!

For the second fan duct, you'll have to cut specific length screws; I've designed this duct so that you screw it into the motor... take out the bottom two screws from the motor on the right, then grab some more M3 screws and cut them with about 2 more mm length than the ones that came out. The heads will sink just right so that they don't hit the fan (I made sure of that). Be patient and make sure your screws are not too long, or they will rattle out and the motor and fan duct could get some issues during a print!! 

Please feel free to comment or contact me with ANY questions; I love helping out a fellow 3D printing enthusiast when I can...