Based on daichiasuka's files. Which in turn is based on Nophead's.
The frame hooks have been increased to fit my 0.5inch MDF Mendel90 frame.
After printing a copy of the dust filter. I found it was 10mm too long. So it's been resized. Also the plastic feeding tip has been angled up more. To help the plastic avoid hitting the frame as it feeds to the extruder.
Since I'm using UltiMachine PLA 1Kg spools I've created a large washer to help center the spool on the holder. See pics above for reference.
My slicer settings were 0.2mm layer height, perimeter 3 and infill of 25%.
-Print 2 male frames
-Print 2 female frames.
-Print 1 dust filter.
-Print 4 copies of the washer (If using Ultimachine 1kg spools).