Main positive points from this design:

• facilitates the leveling of the bed
• makes easier to change the build plate
• works well with my Ender 3 Rapid Z Adjust

BOM:

• M3 screws and nuts
• 1 pen spring

Print instrutions:

This was printed with Cura using Z offset option for the different materials for the ruller. assemble the “BedLeveling - arm-1” and “BedLeveling - arm_scale-1” to print it well.

History:

Navigating the printables just for ideas i found one mechanical Bed leveling tool for Ender-3, and at that time i didn't have a bltouch installed (because i'm a poor guy trying to spend the least).

So immediately i wanted something like that for my Ender, But that solution was for the stock extruder shroud and at that time i had the eB Fan shroud. So i decided to do make one for this shroud. 

It works fine and decreased the leveling time.

But my Ender board had some problems, i switched and bought a BLTouch and installed with my new maps Ender 3 Direct Drive + Extruder Shroud.

So i don't use this anymore, even the photos are some old ones (with bad quality) that i found on the phone and remember me to share this model to the Ender 3 community.

Conclusion

The only thing better than this solution is to buy an BLTouch!

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Disclaimer:

You are a grown up, do it at your responsibility. If not, do it with parent supervision with their approval… hehehe

Good Luck and good prints