DIY Probe for ender 3 pro

modified version of https://www.thingiverse.com/thing:2841443 to fit my ender 3 pro with a spider hotend and an endstop recovered from an old printer and a 2mm nail insead of a carbon rod.

the accuracy I got using M48 repeatability test was not as good as the original(range 0.043, deviation 0.013) but I think it' sufficient to get a good result in normal printing conditions.

if you want to use the fan shroud it was made to fit the creality spider hotend (v2 I think) and you have to include the piece make to hit the x endstop and reduce the build area from 235mm to 225mm on the x axis (you will loose about 10 mm of bed on the x axis counting)