Making a small plastic fan

Simon,

That looks very impressive.....I may just enquire about having one printed to see how it turns out.....

Thanks....

John, sent you a PM

How many do you want I can CNC machine them Ali, Acetal or what ever, if you provide the original as a patern,

if they come out of offcuts you just need to pay the postage etc

Shaun

I-C/Shaun, pm sent....

I have made progress!

I made a silicone mold based on an original fan, then molded a new fan from the mold.....

Good result I'd say.....the fan pictured requires cleaning up, machining to size and then balancing( another challenge!)

Looking good John.

What material did you use?

Russell

I used polyurethane resin/activator for casting the fan.....

Demold time was around30-40 mins. Allowance made for a bit more time to fully cure/harden. I finished off the fan in the lathe, turned to diameter and thickness...

The fan is now installed in the drill and runs like a good'un....

I'm very pleased/surprised at how well it has turned out, the original fan had the part number TPD6 on its surface, the mold has picked this up and it has actually transferred to the new casting.....

I'm now considering adding some fibreglass to strenghten....any thoughts?

I'd need to be quick whetting it out as the pot life of the resin is minutes!!

Hi John

I'm glad my suggestion of pulling a silicon mould off an original worked for you. Just out of interest what particular PU resin did you use in the end?

Brian

Brian,

I used Mouldcraft A2000L.....

Reason being, I could get a small quantity for minimal outlay so I could see how it was going to work out....

Thanks for the initial advice...

Well that worked