Dust Collection Issues. #3: Some different blast gates

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Blog entry by shipwright posted 09-08-2012 09:16 PM 7312 reads 5 times favorited 6 comments Add to Favorites Watch
« Part 2: Make your own big PVC "Y's" ... Cheap !! Part 3 of Dust Collection Issues. series Part 4: A re-vamp of my Green Valley HF setup with truck filter. »

My blast gates are nothing special but since some of you wanted to see them here are a few photos.

The first one is my planer in use and closed.

The band saw is the same.

This is the downdraft section of my bench open and closed. I don’t mind that the two finger holes are always open. This is the very end of the line and I find that it’s good to have the bitter end of the line at least somewhat open. I think that when an open line is joining the main and the gates further away from the DC are all closed tight that there must be a vacuum and associated turbulence just above the “Y”. I like to have the farthest gate open a little and these seems to do the job.

This is a floor sweep trap door. gravity and suction keep it tight.

I also use several cheap plastic commercial gates. Unmodified they will soon plug in the corners and not fully close, but the modified one on the left won’t. It simply has its end cut off so the dust and chips push right through. You sometimes have to add a drop of glue to keep the sides together but they work much better.

That’s it ! Sorry there was nothing very innovative or amazing, but then they’re blast gates. How innovative can they be? The important thing is that they all work and I just love my system especially now that it REALLY SUCKS. (Actually it sucked before, with the bag filter…. but not in a good way.)

Thanks for looking

Questions, comments and critiques are always welcome.


-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees.

6 comments so far

View patron's profile


13610 posts in 3393 days

#1 posted 09-08-2012 09:23 PM

simple and straight forward paul

and the price is the best

well done

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View longgone's profile


5688 posts in 3360 days

#2 posted 09-08-2012 11:17 PM

gets the job done and saves money…a good combination by any standards.

View lew's profile


12145 posts in 3807 days

#3 posted 09-08-2012 11:45 PM


Now I can throw away my specially designed tool for digging out the embedded chips.

When the gate is in the open position, is there any significant loss of suction at the machine?

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View shipwright's profile


8005 posts in 2850 days

#4 posted 09-09-2012 12:28 AM

Lew, No, they squeeze so tight that you can hardly tell you’ve cut them. Try one they’re cheap and you can always reverse it with duct tape if you’re not happy.

Good to hear from you. I haven’t seen your name for a while.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees.

View Schwieb's profile


1858 posts in 3513 days

#5 posted 09-09-2012 12:07 PM

I’m paying attention here. I purchased canister filters from Penn State Industries when I bought my DC system. It had good vacuum pressure when the system was new, but I’ve noticed it’s much less now, even after trying to revive the filters with an air gun. The cost of replacing the filters through PSI is prohibitive. It’s the dust that clogs them up and reduces air flow. I’m thinking I can use these truck filters instead.

-- Dr. Ken, Florida - Durch harte arbeit werden Träume wahr.

View DIYaholic's profile


19623 posts in 2727 days

#6 posted 09-09-2012 12:40 PM

Thanks again, for taking the time to share. I learned to modify my plastic gates, so your efforts ARE appreciated!!!

Now go to your shop and have some fun making & collection dust!!!

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

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