Prologue

This is a WORKING remix of the SP-5 H2 mount by Lee82UK.

The original design had several flaws, including by not limited to:

• Impossible to mount 2 5015 fans on this extruder and not hit the SP-5 frame.
• The BLTouch probe when retracted is lower than the nozzle and it interferes with the M3 screw needed to mount it on the extruder.
• The 5015 blower fans do not screw on anything!

This remix (redesign) addresses the above areas in order to provide a working solution (as shown by the actual pictures mounted on my SP-5 v1.1).

Printing Tips

It is highly recommended to print all parts in ABS with a 15% gyroid infil, this turned out to produce the strongest parts without adding much weight (total weight with the H2, 3DTouch, 2 5015 fanducts, 2 5015 supported fans and screws is 285g). If you cannot print with ABS, try at least to print the fanducts with PETG or other high temperature resistant material.

Part list

The complete solution contains:

• The main H2 extruder mount
• The 3DTouch/BLTouch mount
• The X-axis endstop extension
• Two pieces of the 5015 fanduct; two versions provided, one with support arm and one without (use glue to secure the fan if you go with the supportless version).

Assembly

Use washers when you have a screw or other metal part come in touch with plastic part, this improves the longevity. You will need the following screws:

• 2 M4x12 screws with 2 assorted nuts,2 washers and 1 M4x8 screw for the main mount (rear side).
• 2 M3x12 screws with assorted nuts and washers for the main mount (front side).
• 2 M3x12 screws with washers for the main mount (top side).
• 2 M3x20 screws with assorted nuts and washers for the 5015 support arms.
• 4 M3x12 screws with assorted washers for mounting the 5015 fanducts to main body.
• 2 M3x8 screws with assorted washers for mounting the 3DTouch/BLTouch mount.
• 2 M3x30 screws for mounting the extruder cooling fan.

Firmware setup

The Nozzle to Probe offset is 36,7mm to the left and 22,8mm to the back.

Remember to perform an extruder e-steps calibration before the first print.

On my setup with the stock firmware, the needed e-steps were 1887.59.

Epilogue

Many thanks to Lee82UK for providing the original design.