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| Injection molded fan |
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| John Rudd:
Prompted by another member, Joules....I have given thought to making a new fan for my drill refurb project.... As I need a few of these, milling from a blank seemed tedious.... |
| John Rudd:
Simple enough to make or so it seems, although the added complication is that there is a centre boss with a steel insert.... |
| John Rudd:
Fortunately, I have the steel inserts from the fans that were destroyed during their removal... So now onto making the mold.... Starting with an alloy blank disc, I machined the slots that would form the 'blades'....sadly I got part way thru when the motor on my mill gave up! |
| John Rudd:
Now the centre of the disc has been bored to take the metal insert and there will be a locating pin on the main mold so that the insert is centralised when all is assembled ready for plastic injection... |
| John Rudd:
So once this part is completed, I need to think about plastic/inj mold machine and anything I might have forgotten.... So if anyone has any tips or advice or suggest if I've gone about this the wrong way, do let me know.... I do need advice in what type of plastic....any ideas...? Btw, the fan is around 50mm dia and around 10 mm thick at the thickest part...motor speed is around 5-6000rpm... |
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