Noctua 4020 using stock screws Wanhao Di3
thingiverse
The stock fan is noisy and the bearings are wearing out quickly. I changed the stock 4010 fan for a Noctua 4020 and I wanted to use the stock screws, so I printed spacers in PETG. They work well if you do not over-tighten the screws. In order to reuse the stock screws, you need to drill out two holes to get the screw head through (only the outer holes). Use a 6mm drill to carefully drill out the two outer holes that the screws go in. I also zip-tied the fan cable as in the picture ***Note:*** It should be just enough space to use the 20mm thick fan without crashing into the frame when homing X. If you do not have enough space, you can loosen the two screws holding the cold-block and move the cold block slightly. The screw is a M3*37mm The spacers are 3,6mm thick
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