Ender 3 modular Hemera mount (no X build volume loss)

thingiverse

# Ender 3 Compact Mount for E3D Hemera - The aio mount version, recommended, keeps the x offset of nozzle unchanged and maximizes the X build size to 235mm. This version uses only three m3x7mm bolts to mount the Hemera to the plate. - You must change the x build size to 220mm if you are using the "compact" version. - The 4020 fan mount is based on Joe Casha's design at myminifactory, but it can be used without applying glue. The "lower" fan duct version is 1.5mm lower. ## Update - Version v4fix3 has been updated based on EricE555's recommendation. ## Requirement - Two M5x30 hexagon head bolts are required to mount the mounting piece to the base plate, using the stock bolt and nut set in the same orientation. You can use a wrench to keep the bottom nut from rotating. - Four M3x7 button head bolts are needed to mount the Hemera to the mounting piece. - There are four slots for optional M3 square nuts, which can be used to mount cable routers or LEDs. - Flat head M3 bolts are required to mount the 4021 fan duct. Also, check the troubleshooting section below if you encounter any problems. ## 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, use a nylock nut on the back and it sticks out too far and hits the gantry before you hit x endstop. The solution is to use the nylock nut in the printed part where the bolt head would go. Then use the stock button head bolt from the back side and all worked as expected.