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Old 05-24-2014, 08:59 AM
mrblint mrblint is offline
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Default having a cone frustum fabricated

I have a very small, much too cramped one-car-garage wood shop, and need better dust collection than my shopvac with a mini dust deputy provides. But it has to be compact. Budget is limited.

I have a "shorty" tower design in mind, where the blower sits on top of a steel cone. Since I have no experience fabricating metal, I have no idea whether it would be reasonable to expect a metal shop to make me a few pieces that I could put together myself, for about $250, using 1/8" thick steel. I could weld the seams myself if they were made accurately.

What I'm looking for is a large cylinder (14" I.D.) with bolting flanges, and a cone frustum (larger I.D. 14", smaller I.D. 6", 14" tall) also with flanges, and a small cylinder, 6" I.D. with a flange. Something like the attached picture but without the complication of the inlet.
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Old 05-26-2014, 02:13 AM
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Welcome to the forum... not too sure what a fab shop would charge but I'm pretty sure the using 1/8" thick steel is not necessary for what you're wanting.

If you're not comfortable with what a local fab shop is bidding on your project, try asking for three local bids to see if they are all in the same price range.
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Old 05-27-2014, 07:07 AM
mrblint mrblint is offline
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Thanks for the reply.

I can get quotes from a few shops. But I didn't want to waste their time if making cones is difficult and this was going to cost $500 minimum.

When I was thinking about what thickness, I had in mind that the cone might have to bear the weight of the motor and impeller. Do you think a sixteenth would be plenty strong?
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