As I got a nice alu sheet I decided to build a new print bed out of it, incorporating a nice, nearly plug-in 3-point bed leveling.
Here I gathered all needed informtion/parts as a package:
- Alu bed: dimensions and positions for M3 threads can be found in the pdf
- Replacement parts for front bed mount as direct plug-in replacement
- Rear bed mount parts (need to drill 3 holes in the plywood)
- Bed washers from http://www.thingiverse.com/thing:22448
- M3 screw knob from http://www.thingiverse.com/thing:225286
Further you need:
- 3 pc. Original bed springs
- 3 pc. M3x40 mm screws or threaded rods
- 6 pc. M3x10mm screws
- 9 pc. M3 nuts
- glass plate 242x242, thickness as you like, 2mm recommended
- 2pc. bulldog clamp
- 3mm drill for cleaning the guiding holes
As I finished replacing my acrylic bed, I'm absolutely glad with this setup as it needs not too much space, less modification on the original parts and gives a very smooth and easy leveling.
Next will be to add a silicon heater pad to get a heated bed
- Print all parts. You need:
- 2x front mount
- 2x front mount bottom plate
- 1x rear mount
- 1x rear mount bottom plate
- 6x spring washer
- 3x screw knob
- Drill a 8mm hole exactly in the middle of the existing rear mount
- Place rear mount into the hole and drill the coresponding 3mm holes for mounting it
- Place rear bottom mount at the under side of the plywood and use 2x M3x10mm screws to mount the whole assambly. screw directly into the bottom plate, no nuts needed
- Replace the two front mounts by the new parts, using each 2pc. M3x10mm and the bottom plate for mounting, no nuts required
- Place 2 nuts in each screw knob and screw it onto the M3x40mm screws or rod, do this 3 times
- Place the assambly from below through the new mountings, slide a spring washer, the spring, a second washer (take care about the orientation of the washers) onto the assabmly and secure it with an M3 nut each.
- Screw down the nuts at least 6mm, place the alu bed onto the scews and screw them into the alu plate as deep as possible without getting out on the print surface.
- Counter the position of the assambly/bed with the M3 nuts
- Make sure, everything is working properly and there is no friction when pushing down the bed. If there is friction, take out the mounts and use the 3mm drill to make it work smooth...
- TADAAAA.... ready for testing...