4 inch dust port

t3steve · Post by **t3steve** » Tue Nov 29, 2016 11:23 am

I have a higher capacity dust collector than the shopsmith brand (800cfm)and think that I would get better performance by cutting the little 2.5 inch port out of the saw guard and installing a 4 inch port. Has anyone tried this yet?
I would also cut a 4 inch port the bandsaw. Anyone done this?

Steve

Gene Howe · Post by **Gene Howe** » Tue Nov 29, 2016 3:14 pm

I've done the bandsaw. Used a new toilet flange. My 4" hose fits it perfectly.

t3steve · Post by **t3steve** » Tue Nov 29, 2016 4:50 pm

It seems like there should be a lot more air flow without the restriction from the 4" to 2.5" adapter

dusty · Post by **dusty** » Tue Nov 29, 2016 5:22 pm

t3steve wrote:It seems like there should be a lot more air flow without the restriction from the 4" to 2.5" adapter

You are moving the same amount of air but through a larger passage. Is it not to be expected that it would feel like less air is moving. Is there enough air moving fast enough to keep the dust particles suspended? I would think yes.

JPG · Post by **JPG** » Tue Nov 29, 2016 9:59 pm

Maybe!

Recall that SS discontinued the 4" conversion. Lack of sufficient velocity was IIUC the reason.

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