Allen Key ABL Probe for Ender3 Pro, stock parts

Last crawled date: 4 years, 3 months ago

I liked FreeABL using just stock Z endstop to level bed.
Bud I do not believe into system where I have to insert and remove printed parts to themself. Just few usings and it begun to wear edges.
Another system I like is allen key probe, but this did not use stock end stop.
So I've decided to join benefits of both systems and design Allen key probe using stock Z endstop.
This is quick and easy to print thing, without need of support.
You just need to make new longer cable (aboout 90cm) for Z endstop and drive it through same path as cables for hotend.
I am using allen key which was part of Ender3 Pro package, specificaly 2.5/3mm one.
For instruction for Marlin firmware setup see original FreeABL thing. Just do not forget to alter NOZZLE_TO_PROBE_OFFSET according to your installation (mine are -39.5, 0, -5.47) but your can be different.
For allen key postions during homing/probing and during printing (idle position) see photos.
It is easy and quick to deploy allen key into probing position and also to pull it back into idle position. I am using it right now on my printer, and I am realy satisfied with first layer results. Also changing printing surface (I am switching between magnetic PEI steel sheet and mirror) is easy, just swap, no need to alter bed level or Z endstop position manualy.