Ender3 pro 3point leveling and drill template.

thingiverse

Human: 3-point bed leveling for the Ender 3 Pro may work on the Ender 3 if the bed heater PCB is the same. Instructions: Print drill template first, ensuring it lines up perfectly and verifying there's a clear gap between the traces on the PCB to drill the hole. Use a countersink bit and a 4mm drill bit for the top of the bed; the screw head must be flush. Attach the bolt-on template and then drill. Push the corner screws up slightly, allowing you to cut the magnet where the heads are to remove them. Reuse M4 screws from the bed. The carriage bracket requires M4 screws and preferably Nylock nuts for installation. Drilling into the carriage is optional, but it's recommended if the two corners aren't stable enough. Print settings: Print with 5 walls, 5 top and bottom layers, 100 percent infill. PLA or a similar rigid material is ideal for this setup; avoid flexible plastics like PETG due to its low melting point, which won't be an issue due to the heat.