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A journey into the workshop. #76: Replacement filters for the Grizz air cleaner. I hope I didn't make a mistake.

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Blog entry by dbhost posted 11-17-2010 06:07 PM 919 reads 1 time favorited 11 comments Add to Favorites Watch
« Part 75: New drill press table finished, lessons learned... Part 76 of A journey into the workshop. series Part 77: The band saw - lidded log box of doom... »

In the short time I have had the Grizzly G0572 Hanging Air Filter, I have managed to get the original filter in a state of nastiness that just screams of things to come. I needed to seriously start looking for replacement filters…

Now Grizzly offers stock replacements, but one of the fusses I have with the G0572, and the Grizzly replacements is the lack of a washable pre-filter. I mean what sense is it that the secondary filter is washable, but the primary isn’t? And worse, the lower model Grizzly air cleaner comes with a washable primary filter… For some reason they overlooked that highly desireable feature in this model…

Lo and behold, on Monday night, I had a Penn State Industries flyer in my mailbox, and while there wasn’t much in there unless you are wanting to turn billions of pens, (I haven’t started pen turning yet, so it amazes me that they can dedicate so much of the flyer to that one project type), but on close to the last page, they had their AC1000, gee that looks an awful lot like my Grizzly. Dimensions and all…

Then I look. They offer a washable pre filter with the same filtration rating as the Grizzly paper junk. The dimensions as advertised are the same as the Grizzly unit. But the sole review for this filter says that it is actually oversized, Instead of being 14.5×19, it is actually 15-7/8×19-1/8. Now the 19-1/8 I can work with… tolerances on the Grizz aren’t that tight, but a full 3/8 to tall is a BIG problem…

So I called Penn State to inquire about this today. I talked with Bill at PSI, who told me that indeed the sizing is nominal, but that the 3/8” larger sizing is unacceptable, and well outside their specs. And that their filter should fit my unit. In all honesty, I suspect it will. If you look at the advertising copy and product descriptions of the PSI and Grizzly units, it looks like they are the same unit fitted with a different primary filter, and painted different colors…

So I went ahead and ordered 2 of them… (One to keep in the air cleaner while the second is being cleaned / dried, learned to do this with my HEPA filter for my shop vac… Hate not being able to use the vac while the filter is drying…

-- My workshop blog can be found at http://daves-workshop.blogspot.com



11 comments so far

View Jim Bertelson's profile

Jim Bertelson

3663 posts in 1820 days


#1 posted 11-17-2010 06:42 PM

You know, I have had those same anxieties at times. Where it is nearly impossible to tell if something is truly going to fit.

I bought a new Dremel tool the other day, and was wondering whether any of my old Dremel stuff would fit. But it turns out they at least have done a pretty good job at staying backwardly compatible. Usually doesn’t work that way. Shop vac stuff always seemed to be a nightmare, but at least now I don’t use one much at all anymore.

It’s the little things in life that can irritate the heck out of you, and wear you down…............

Jim

-- Jim, Anchorage Alaska

View dbhost's profile

dbhost

5385 posts in 1888 days


#2 posted 11-17-2010 06:59 PM

Well, they advertise that the filter fits similar air cleaners, and it IS listed at the right size… We will see…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View ChunkyC's profile

ChunkyC

856 posts in 1910 days


#3 posted 11-17-2010 08:29 PM

I have a dumb question not knowing anything about either unit: If’ it’s washable and a little too big, can’t it just be trimmed down a little to fit? I’m envisioning a rectangular “foam type” filter that you could just take a little off the top with a razor knife and a straight edge.

-- Chunk's Workshop pictures: http://spadfest.rcspads.com/thumbnails.php?album=135

View dbhost's profile

dbhost

5385 posts in 1888 days


#4 posted 11-17-2010 09:07 PM

It’s an aluminum frame, with a pleated poly fabric element of some sort… Not sure of the specifics… Yes I can trim it down by pulling the frame apart, recutting the miters, and then re-welding it back together. But aluminum welding is a bit beyond me. I can get it done, but why should I when it should already be made to fit?

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View ChunkyC's profile

ChunkyC

856 posts in 1910 days


#5 posted 11-18-2010 01:41 AM

Ok got it. Sorry for the stupid question.

I guess it push comes to shove, then a nice wooden frame might be in order ;) eh?

-- Chunk's Workshop pictures: http://spadfest.rcspads.com/thumbnails.php?album=135

View Jim Bertelson's profile

Jim Bertelson

3663 posts in 1820 days


#6 posted 11-18-2010 01:51 AM

Ahhhhhhhhh, there it is, I build my own filters for my aquarium out of bulk fiberglass, minus the activated charcoal. I don’t know how many hundreds of dollars I have saved.

If you only knew what was in it, and could buy it in bulk…......modify a frame once…...you know, metal plus wood or whatever, and roll your own.

Not impossible to do, but you would need some info.

-- Jim, Anchorage Alaska

View dbhost's profile

dbhost

5385 posts in 1888 days


#7 posted 11-18-2010 01:59 AM

I wonder how hard it would be to make the corners in aluminum… And ChunkyC, not a stupid question at all…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View Jim Bertelson's profile

Jim Bertelson

3663 posts in 1820 days


#8 posted 11-18-2010 04:50 PM

If it was possible to roll your own, I would initially pull apart an old frame, removing, say, the top of the frame. Then I would build a wooden or metal piece for the top. If you lost a few square inches of air flow it shouldn’t make a difference. Oh well, just wondering.

-- Jim, Anchorage Alaska

View dbhost's profile

dbhost

5385 posts in 1888 days


#9 posted 11-18-2010 05:01 PM

When I was in college, I worked in a hardware store / lumber yard where we built custom window screens for customers. The frames were all miter cut, and at least the ones we started out with had aluminum inserts that riveted in that made the corners. We later switched to straight cuts with plastic slip in corners. (The mitered aluminum were MUCH stronger). I wonder if I might be able to pony up some aluminum angle stock that I can crosscut, drill and rivet in place…

Of course if it’s a direct fit out of the box, it’s a moot point…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View John Gray's profile

John Gray

2370 posts in 2541 days


#10 posted 11-19-2010 02:19 AM

Nice post.
I have the same Griz unit and have been searching for a replacement filter from another vendor too. Please keep us informed as to how things work out for you too?

-- Only the Shadow knows....................

View dbhost's profile

dbhost

5385 posts in 1888 days


#11 posted 11-19-2010 02:27 AM

Will do…

I am a little concerned as PSI hasn’t processed my payment yet…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

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