Wanhao i3 J-head conversion
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Replacing the hot end on my stock Wanhao i3 with a budget-friendly Chinese J-head from AliExpress requires minimal effort. Simply reverse the original mount and swap out two M3.5 screws for longer ones, then you're good to go. Since I already had a metal extruder unit, I decided to use that, but if needed, there are many options available on Thingiverse. To increase clearance and printable height by 20mm, I raised the top bar and secured it with only the top screw, while using the bottom two screws to mount the original extruder bracket without affecting stability. Attaching the fan to the shroud is a breeze, requiring just four small wood screws.
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