Bed Level Tension Tester

Designed this so that I could have some visual feedback when I was leveling the bed on my Ender 3. The measurement marks don't mean anything - they are just there for you to adjust your bed so that all tested points 'drag' to the same mark for consistency.

The red marks on the photos were just from a red felt marker - makes seeing them easier.

Tips:

~ Make sure you have good bed adhesion - it will warp nicely if you don't :)
~ Let it cool down properly before removal otherwise you'll easily bend it.