Delta-P Replacement Fan Cheater Clip
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This is to help secure the cable on a replacement fan when routed over instead of dissembling the hot end.
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I printed the Delta-P duct a while ago and LOVE it. However, after over a year of printing steadily, my cooling fan finally crapped out. I kept getting fan failure because the thin wire wore out inside of the insulation from the hot end moving for thousands of hours. I narrowed it down by going to settings and cranking up the fan, then going to Extruder wiring insulation and pinching the wire until it stopped the RPM reading. This triggered the failure warning.
I did some research and found a highly recommend fan. I ordered the FYTEC 50x50x15mm 5V DC 0.35A Hotend Cooler Blower Fan (2 pc) from the Jungle. However this fan comes with a vinyl coating around the three wires. I find it absolutely silly that you have to completely take apart the hot end just to route the wire through the OEM slot… so I routed it OVER and needed a clip.
This clip uses to Extruder Idler Assembly Door bolt. On a Prusa i3 MK3S+, the instruction link below shows how to assembly the E axis assembly.
https://help.prusa3d.com/guide/5-e-axis-assembly_169235#170854
Step 39, the M3x40 screw is what is used for this clip.
Replace the fan, toss the wiring harness over the stainless steel shafts. Secure the cable with a small ziptie. Then follow suite with securing the rest of the harness as normal. This prevents requiring to re-calibrate all of your profiles and such from disassembling, etc. The less downtime, the better.
I printed this in PETG. There should be NO infill. This is a small print.