Allen Key ABL Probe for Ender3 Pro, stock parts

cults3d

I preferred FreeABL using only standard Z endstops for leveling the bed. However, I don't believe in a system that requires inserting and removing printed parts repeatedly. After just a few uses, it started wearing down the edges. Another system I appreciate is the allen key probe, but this design didn't use stock end stops. So, I decided to combine the benefits of both systems by designing an Allen key probe using standard Z endstops. This is a quick and easy print project that doesn't require supports. To set it up, you just need to create a longer cable (about 90cm) for the Z endstop and route it through the same path as the hotend cables. I'm using an allen key from the Ender3 Pro package, specifically a 2.5/3mm one. For instructions on setting up the Marlin firmware, see the original FreeABL thing. Don't forget to adjust the NOZZLE_TO_PROBE_OFFSET according to your installation (mine are -39.5, 0, -5.47), but yours may be different. For allen key positions during homing/probing and printing (idle position), check out the photos. It's easy and quick to deploy the allen key into probing position and pull it back into idle position. I'm currently using it on my printer, and I'm really satisfied with the first layer results. Additionally, switching between different printing surfaces (I switch between magnetic PEI steel sheet and mirror) is easy – just swap them out, without needing to adjust bed level or Z endstop position manually.