Anet A3 Extruder Fan Blower Modification
Description
This is my first time designing 3D models, not from zero but a remix from Anet A8 extruder fan by hadoko. Expect some inaccurate print and a little bit of sanding and also forcing the fasteners. Here I present to you my Anet A3 extruder fan blower modification to enable easy access of the filament feeder motor. Successful installation will make the front fan and heatsink easier to open just like a door (keep your attention on the cables, don't pull to fast or too hard). M4 fasteners are required, for fastening the mod to the printhead and front fan. M3 fasteners are required for fastening the filament feeder motor to the base printhead because the motor will be separated from the front fan. Pick M4 and M3 fastener's length as required. (I did trials and errors but didn't found a good fit, but it still works). Instructions: - Print both parts in lying flat position to avoid supports. - Disassemble the front fan, heatsink, and side blower. (The filament feeder motor will also be unfastened). Keep the original fasteners. - First of all, refasten the filament feeder motor to the base printhead with M3 fasteners (length still hit and miss for me, sorry). - Second step, place the side blower mod, refasten with the same bolt that came with the blower. Do a little cable management to your liking. - Third step, put together heatsink, front fan, and the front cover mod, fasten with M4 fasteners, be sure it is long enough to penetrate the front cover mod. Put some nut in front of it to secure the mod. - Fourth step, join the side blower mod and the front cover mod together with M4 fasteners (you might want to force the bolt the get a nice fit hinge, don't make the hinge to loose because the front mod will just swing easily). - I see a little bit of gap between the final assembled fan-heatsink part and the filament feeder motor part. Then I decided to change to heatsink to a pass-through mod I found in thingiverse so that the air will blow directly to the motor behind. - Re-do cable management to avoid cable damage. I snapped the front cover mod into half on my first try when fastening the bolts. Reprinted it and retry. The end results are shown on the images.
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