I'm about to build a blower (BP design) and would be happy to receive comment on use of materials to hand.
Instead of 16mm MDF (which I don't have), I have some 12mm acrylic sheet offcuts (Corian type) that has been waiting to be repurposed. It is very dense and acoustically dead which might help a bit with deadening the noise from the cyclone.
Instead of a 150mm strip of 16 gauge steel, I'm thinking of using a leftover strip of plastic garden edging that is about 3mm thick (I think it is made of recycled PET) to form the outside spiral. It is pretty slick and also a lot less noisy than steel to knock on so should contribute to a quieter system; my only concern is whether it has sufficient strength for the job in the event (however unlikely) that a small piece of timber somehow makes it way to the impeller.
Instead of 16mm MDF (which I don't have), I have some 12mm acrylic sheet offcuts (Corian type) that has been waiting to be repurposed. It is very dense and acoustically dead which might help a bit with deadening the noise from the cyclone.
Instead of a 150mm strip of 16 gauge steel, I'm thinking of using a leftover strip of plastic garden edging that is about 3mm thick (I think it is made of recycled PET) to form the outside spiral. It is pretty slick and also a lot less noisy than steel to knock on so should contribute to a quieter system; my only concern is whether it has sufficient strength for the job in the event (however unlikely) that a small piece of timber somehow makes it way to the impeller.
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