Stage 03: Platform

Prepare 12 rail mounts as shown by loosely fastening a T-nut onto the M5 bolt.

M5 x 8mm Button Head

M5 T-nut

Fix the mount assemblies from the previous steps onto the four 460mm long MGN12 rails.

Space them out as shown with two fixed one forth edge and the third in roughly the middle.

M3 x 6mm Cap Bolt

Use the orange stoppers to prevent the carriage from falling off the rail.

Mount the rail assemblies onto the inside of the frame as shown.

Mount the rail assemblies onto the inside of the frame as shown.

Mount the four Z-Carriages onto the rail carriages.

P4.2 Z-Carriage

M3 x 10mm Cap Head Bolt

Match the orientation of the brackets as shown.

Fix the lead screw nut onto the bracket.

M5 x 20mm Bolt (Button head - image is incorrect)

Orientate the nut as shown.

Assemble four Oldham Couplings as shown.

M3 x 6mm Cap Head Bolts

M3 x 8mm Cap Head Bolts

Feed the four lead screws into the nuts as shown.

Install the Oldham couplings to the Z-Motors shafts and Lead Screws.

Add the M5 x 12mm Grub screw to the lead screw nut as shown.

Tighten until you feel some resistance, the purpose of this grub screw is to prevent backlash along the nut and lead screw.

Do not tighten to the point that the lead screw will no longer turn. You should still have smooth rotation of the lead screw through the nut.

Stick over the aluminium platform plate the magnetic flex-plate sticker.

You may find this sticker, being magnetic, stuck onto the back of the black PEI flexplate in the packaging.

Ensure it is stuck onto the side shown in the images.

Peel away the backing paper from the magnetic sheet. Begin by sticking it to one of the shorter edges pressing it down carefully preventing any air bubbles. Use a credit card to press the sticker down, pushing out any potential air pockets.

After sticking the sheet down use a craft/box knife to cut away where shown to expose the holes. Use a pin to poke through the other side of the plate to make where you should cut.

You don't need to be particularly neat about these cuts, this sticker will have the flexplate go over it.

Peel the backing paper away from the heater pad.

Fix the heater onto the centre of the underside of the platform as shown.

Ensure the cables are on the side with the M4 threaded hole as shown.

Make sure the hole is not covered either.

Fix the 1M Earth cable to the platform with an M4 x 6mm button head bolt.

Cut 70cm of the braided sleeving and wrap the heater and earth cables with it.

Also wrap into this cable sleeving the black, white and red cable for the calibration probe. Ensure that the side of the cable with the 3-pin header is on the side of the heater.

Mount the four Z-Brackets to the Z-carriages as show.

The larger brackets go to the rear of the printer.

Fix with two M5 x 14mm Button Head Bolts.

Mount the platform assembly onto the Z-Brackets:

M3 x 16mm Shoulder Bolt

M5 x 8 x 0.5mm Shim

Yellow Compression Spring

Stick onto the underside of the rear left bracket two cable tie mounts.

Cable tie the cables from the heater to the cable tie mounts.

Feed the cables into the base and wire the heated bed as shown:

Bed Signal Cables - 30cm

Bed Power Cables

One cable to SSR Relay

One cable to N terminal on 48v PSU

Bed Thermistor - Plug into control board

Bed Earth - Bolt to Base

Calibration Probe Cable - 4-pin connector side (Note that the calibration probe itself is not secured anywhere yet - it is only mounted to the bed when a calibration needs to be performed)