Help needed with shop-made dust collector

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Forum topic by chrisc posted 03-22-2011 08:14 PM 1295 views 0 times favorited 2 replies Add to Favorites Watch
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19 posts in 3883 days

03-22-2011 08:14 PM

Topic tags/keywords: question

Forum Members,

I recently purchased the Hammer N4400 band saw and the Hammer A3-31 12 inch jointer planer combination machine – they are great!

I was using a 1 hp Grizzly portable dust collector – that was no longer sufficient.

So, I built a box, took off the inlet cover, mounted the motor on the box and mounted a 4 inch inlet on the side of the box.

Here’s my problem: when the grizzly dust bag is off (just to check suction) the power seems very strong. When I attach the bag, which captures only big particles, suction falls in half.

Would buying a cyclone help? What type of filter would be better for cleaning the exhaust and maintaining the highest CFM?



-- Chris

2 replies so far

View Greedo's profile


473 posts in 3157 days

#1 posted 03-22-2011 09:35 PM

it’s normal that suction is greater with no filter bag, it takes alot of energy to push the air through.
i think that a cyclone will possibly decrease the suction even more, anything you add to the system makes the flow drop. a bigger filter bag could help.

View chrisc's profile


19 posts in 3883 days

#2 posted 03-23-2011 11:37 PM

Hi Greedo,

That’s what I was thinking. I plan to try a larger filter bag – the impact of a cyclone was unclear to me.

Have you seen the new portable Grizzly dust collector with cyclone? Any experience with it?



-- Chris

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