I decided I wanted to print the LPSH as a replacement to the current one I was using for external spools.

While Laisch design is fantastic, it used a bill of materials with many fixings I didn't have and it wasn't compatible with the BLV AMS riser I use.

See Laisch write up for how this spools holder works and is assembled, as Laisch has done a great job of this.

Here is a list of the changes I have made:

• Changed bottom profile of main frame and clamps to work with the BLV riser.
• Added holes in the bottom so if I stop using the BLV riser I can add a packer piece.
• Reduced the bill of materials required.
• Added stubs to the main frame to hold the elastic bands.
• All holes resized for M3 screws and nuts.
• Holes for the PTFE tube holder have been threaded instead of having to self tap.
• PTFE tube holder has a hole for the PTFE tube to pass straight through. If the tube wears it can just be snipped back, whereas the original design had a tight hole and the filament seems very likely to wear the hole and therefore the part.
• Design is based on the PLA rollers. If you wanted to use the TPU ones you can source from original model.
• All parts moved on to one build plate and designed to be used with the AMS that has 5 slots spaced about 40mm apart.

I also have a couple of assemble notes:

• Pop a screw through the bearing posts first. There is a 1 layer bridge between the screw hole and nut hole to avoid using supports.
• The holes for the nuts are a tight fit and may need to forced in. I wanted them to be locked in place when assembling.
• The PTFE hole may need to be opened up slightly. Again wanted it to be a snug fit so it is gripped in place.
• Not covered in the original write up, the clearance on the PTFE guide is tight. I had to force it to twist with pilers, mainly due to its size.
• Also not covered in the original write up, it is fiddly getting the clamp brackets in to the AMS. I did it while fully loaded and in place but would suggest having the AMS on a table ideally.

Bill of Materials:

• 4 x small rubber bands.
• 4 x 608 bearings
• 1 x PTFE tube
• 9 x M3 nuts
• 9 x M3x12 screws

For the screws, you can actually use 8-12mm for the PTFE guide and 12-20mm for all the other fittings but using all M3x12 was what I wanted to use.

NO HEAT INSERTS REQUIRED :)

If anyone would like to know, I printed in Bambu's PLA-CF Lava Gray.