Ender 3 compact mount for E3D Hemera

• The aio mount version(recommend) will keep the x offset of nozzle unchange and maximum the X build size is 235mm. This version only use 3 m3x7mm button head bolts to mount the Hemera to the plate.
• You will need to change the x build size to 220mm if you are using the "compact" version.
• 4020 fan mount is based on Joe Casha's design on myminifactory but can be use without applying glue. The "lower" fan duct version is 1.5mm lower. This duct is hard to print and not that good perfomance. Use the "another duct" or 5015 duct version.
• You will need to mount the heat block to the hemera before mount it to the mounter plate OR take out bolts that hold the 4010 fan and heatsink, pull the filament level then you can remove the hemera heatsink by pulling it to the right.

This model is made and tested on Ender 3 v1

• If you have ender 5 or ender 3 with belt mounting on the side. Check draakje's remix

Update

• 2021/05/20
  • Added 5015 fan mounter and duct. This design is a remix of Grégoire Saunier Bearmera mount.
  • Aio mount v1-fix4 : Stronger bltouch mount and added slot for ziptie.
• 2020/08/27
  • Added new better fan duct (the another duct version), You will need to rorate the heatblock 90° and print 2 washers to use this duct.
• ???
  • Updated v4fix3 based on EricE555's recommend.

Requirement

• 2 M5x30 hexagon head bolts to mount the mounting piece to the base plate. The bottom bolt slot use the stock bolt and nut set in the same orientation. You can use the wrench to keep the bottom nut from rotate.
• 4 M3x7 button head bolt to mount the Hemera to the mounting piece.
• There are 4 slots for optional M3 square nut. These slots can be used to mount cable router or LED.
• You will need flat head M3 bolts to mount the 4021 fan duct.
• Also check the troubleshooting below if you have problem.

Probe offset

• Offset for 4020 fan and fixed bltouch mount(side) :
  #define NOZZLE_TO_PROBE_OFFSET { 61, -16, 0 }
• Offset for 4020 fan and fixed bltouch mount(front) :
  #define NOZZLE_TO_PROBE_OFFSET { 5, -45, 0 }
• Offset for AIO mount
  #define NOZZLE_TO_PROBE_OFFSET { -33, 1, 0 }

Home offset

• Compact mount version
  #define X_MIN_POS -21
#define Y_MIN_POS -16
• AIO mount version
  #define X_MIN_POS -7
#define Y_MIN_POS -16

Troubleshooting

• From EricE555's comment
  I used a 30mm M5 hex head bolt for the bottom roller just like I did for the top. If you do that you use a nylock nut on the back and it sticks out too far and hits the gantry before you hit x endstop. The solution was to use the nylock nut in the printed part where the bolt head would go. Then I used the stock button head bolt from the back side and all worked as expected.