I am building a green laser, I have a 200mW module and a circular aluminum heatsink, I am going to mount the module and heatsink in a 1.25 inch PVC pipe and I need a 30mm round fan to put on the back of the pipe to draw air through to cool the heatsink.I am looking for DC 30mm round fans like the kind used in computers, but all I can find is square fans and one 80mm round fan, but 80mm is too large.30mm is ideal, but 30-60mm would also work.
No, unfortunately you can't, you can only felt animal fibers like wool or alpaca, not acrylic or silkSuperwash wool is treated with chemicals in order to prevent felting.
No, acrylic will never feltOnly 100% wool (NOT superwash wool though!) will felt.
No - only 100% wool yarn felts (though you could probably get by with like 95% wool.) And wool yarn that is marked 'superwash' won't felt eitherSorry :(
No, only pure wool felts.
Because you say you can work with a larger fan, why not grind the corners off a square fan to make it fit? There are also many 9.5 cm round fans on eBayYou could fit one of those in a larger diameter pipe and use a reducing adapter to connect to your smaller pipe.
