Shop made air filter

  • Advertise with us
Project by povertyridge posted 02-12-2013 12:59 AM 38078 views 41 times favorited 15 comments Add to Favorites Watch

Like a lot of others on here I found this in an old issue of Shopnotes (the complete small shop 2011). I literally just finished. I can’t wait to use it! I got the blower for free and just took a sheet of 3/4” Birch, pack of 3 filters and a little time in the shop…............ Priceless!

-- --- Chad Franklin, IN ---

15 comments so far

View kdc68's profile


2526 posts in 1699 days

#1 posted 02-12-2013 01:29 AM

Nice work….great color scheme in your shop!

-- Measure "at least" twice and cut once

View David Dean's profile

David Dean

604 posts in 2322 days

#2 posted 02-12-2013 02:30 AM

great job one of them is a most have in the shop.

View Tym's profile


18 posts in 1389 days

#3 posted 02-12-2013 04:19 AM

I made a similar one last year. Its nice not having the sawdust in the air. One thing that I did to mine that you may want to look at is to change the on/off switch to a timer. That way you can leave the area while it cleans up and then goes off on its own. Great build though!

View AnthonyD's profile


21 posts in 1354 days

#4 posted 02-12-2013 04:40 AM

that is awesome!!!!

-- AJ DeSantis

View b2rtch's profile


4822 posts in 2471 days

#5 posted 02-12-2013 01:35 PM

I made one a few weeks ago and I have a timer and a four positions switch for the four speeds fan.
I used 20×25 filters and my last filter is MERV 15.
It makes a huge difference in my shop.

-- Bert

View toddbeaulieu's profile


779 posts in 2427 days

#6 posted 02-12-2013 03:47 PM

Nice Chad.

Did you work out the CFM? I was thinking of making one, but I couldn’t find any motors over 1,000 CFM. And what I did find was too expensive, especially considering I could get one of the common units at 1,400 CFM for around $350.

View mlp490's profile


4 posts in 1352 days

#7 posted 02-12-2013 05:16 PM

Great idea

View Tom Huntley's profile

Tom Huntley

49 posts in 2662 days

#8 posted 02-12-2013 06:54 PM

Perfect timing Chad! I have a friend in the HVAC business that just gave me a free fan, and now I’m doing some research on air cleaning systems. I found a place on line that sells the same type of heppa filters used in the Jet system for about half price. Figured I would use them in a box like yours. Really liked the other feedback too on timers, fan speeds etc. Thanks again to all. Would love to see a follow up report when your fire yours up. It looks terrific!

-- Tom Huntley - Rochester Hills, Michigan

View rlamb007's profile


62 posts in 1960 days

#9 posted 02-12-2013 09:39 PM

Great Job – I am sure that will make a nice difference in the shop. Where did you get the blower?

View ROBZ71LM7's profile


11 posts in 1641 days

#10 posted 02-13-2013 12:07 AM

I would suggest putting your connections (wire nuts) inside a metal junction box mounted inside the filter box.

View povertyridge's profile


44 posts in 1370 days

#11 posted 02-13-2013 12:31 AM

Thanks to all! I’m going to try to address everyone, here goes….

kdc68 – Thanks and I painted it to match our cars, I’m weird like that.

David Dean – Thanks, I’m excited to breath easier!

Tym – That would be best, why style/type of timer are you using?

anthonyD – thanks!

b2rtch – Where did you pick up the switch from? I did try to find one locally with no luck.

toddbeaulieu – I didn’t figure out the cfm’s just yet…. It’s a 1/2 hp and a healthy sized squirrel cage with 4 speeds.. All I know at this point, on high speed it will pull a sheet of paper to it from 3’ away! I advise checking with a local HVAC installer, a lot of times they are more than happy to get rid of the smaller units. Save your $$ and do a little phone work, for $50-$60 you will have a machine 2x better than anything you can buy.. Good luck!

mpl490 – Indeed, wish it was an original one!

Tom Huntley – Perfect! Thanks so much! Happy building and can’t wait to see yours!

rlamb007 – Thank you, I had an old blower laying around from previous home owner. ( it was huge) I am doing a small side jobe and they updated the the HVAC and I was able to score a bit smaller unit. I modified it with a 1/2 hp motor. (it had a 1/3hp motor) the more suck the better!

Thank you all for your feed back. It’s nice to have a community of like minded people!

-- --- Chad Franklin, IN ---

View Grandpa's profile


3256 posts in 2098 days

#12 posted 02-13-2013 12:37 AM

Where did you find those Jet filters you mentioned. Link please,

View povertyridge's profile


44 posts in 1370 days

#13 posted 02-13-2013 01:20 AM

Robz71lm7 – I agree, I was excited and jumped the gun on the pic’s, I actually have the box. Thanks for looking out for my safety!

-- --- Chad Franklin, IN ---

View thinbluebbq's profile


5 posts in 330 days

#14 posted 01-02-2016 05:14 AM

Great work. I have a great furnace fan courtesy of my awesome hvac guy in Franklin! Great to find another local south side woodworker.

View povertyridge's profile


44 posts in 1370 days

#15 posted 01-07-2016 08:45 PM

Thanks thinblue, It is a lung saver for sure!!!

-- --- Chad Franklin, IN ---

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics