Ormerod z axis upgrade

In the pursuit of a better alternative to the M5 lead screw i saw that acme lead screws have come down in price due to higher demand. After figuring out how to implement this upgrade i came up with this design.

This upgrade requires three printed parts and a structural modification of your printer whichwill force you to recalibrate your printer.

--PLEASE NOTE--

The screws holding the IR probe will come loose over repeated homing of the X axis IF YOU DO NOT LOWER THE X AXIS HOMING SPEED FROM F2000 TO F1000 OR LOWER, the probe does not recognize the end stop quickly enough to avoid a collision with the z axis screw.

Bill of Materials:

437

4 M4x10mm cap

4 M4 t-nut

469

3 M4x10mm cap

3 M3x12mm countersunk

425

2 M3 x 50 cap

2 M3 x n/a countersunk

X end stop

2 M2.5 x 6mm

Print Settings

Printer Brand:

RepRap

Printer:

Ormerod 2 528.4

Rafts:

No

Supports:

No

Resolution:

0.2mm

Infill:

25%

Notes:

I have used meshmixer to reorient the .stl files to rest on the platform the way i printed them.

The parts are printed in transparent PET-G from devil design with no cooling fan.

Post-Printing

The 15mm gap

Due to z wobble i feel it necessary to sand the 15mm thick "wedge" in part 437 and 469 to get a similar thickness on both parts. This is measured with a caliper. The gap moves the motor away from the 20x40 extrusion so the spindle of the stepper motor is located on the same plane as the M5 lead screw was in.