Cut to fit filters

[Jasonrkba]

Has anyone had any luck finding a suitable material for cutting your own filters? I contacted Maxflo and currently waiting for a response. Im looking for somthing in sheets as opposed to sponge. The HVAC stuff breaks down and Im leary of using the scotch brite pads like some people use.


Thanks. Jason.

 

[frank_]

pond filter foam, foot square from china, because it has to be open cell type

 

[Jasonrkba]

Interesting. This looks good but I am concerned that the activated carbon could get sucked up.

EA Premium Carbon Infused Filter Pad 18x10 - Cut to Fit for Aquariums and Pond https://www.amazon.com/dp/B07T3PPH4C/ref=cm_sw_r_em_apa_fabc_EYDG89GXSDA5JPZTV529

 

[frank_]

i use micro and meso , 2 layers usually
https://www.ebay.co.uk/itm/Fish-Tan...rand=Unbranded&_trksid=p2047675.c100010.m2109

 

[heimannm]

Max Flo used to sell their products in sheets and some enterprising folks were selling made to fit filters on eBay. I bought one for a large frame McCulloch and one for the 10 Series SP type saws that way.

Mark

 

[Old2stroke]

I just go on Amazon with "foam engine air filters" and a number of them come up and I just pick one that is cheap and can be modified to fit.

 

[Bob Hedgecutter]

I just go on Amazon with "foam engine air filters" and a number of them come up and I just pick one that is cheap and can be modified to fit.

ATV service shops have bins full of the sleeve type foam filters that slip over a metal mesh- they take them out by hour clock readings and replace them under warranty of the ATV at "X" intervals- cut to fit and hey presto.

Failing that, I have relined flocked filters that have lost their flocking with the sheet filter material that comes with vacuum cleaner bags.

 

[TNsawman]

Search for dirt bike and ATV filter foam. Brands like UNI sell small sheets. I din't know how fine they get since I was looking for coarse at the time. I also use nylon mesh fabric, right around 300 mesh is right for chain saws and flows better than flocked filters.

 

[1hp]

shop vac makes a foam pre-filter for some of their models.

 

[1hp]

https://www.lowes.com/pd/Shop-Vac-Reusable-Wet-Dry-Large-Shop-Vacuum-Foam-Sleeve/1095533

 

[Canyon Angler]

What about thin wool felt, draped over and glued to one of those "snow filter" winter air filter/screen things?

Seems like that would be pretty close to what came factory stock on my MS361...

 

[Jasonrkba]

I am looking to replace the silk type filter on my pioneers. Farmsaw and p41. I used a precut maxflo on my p40 and its great but I cant find them anymore. Im not sure the foam type will get it done. I love all the different ideas though and may use them on other saws.

 

[Jasonrkba]

This stuff really looks interesting.

https://www.airfilterusa.com/sure-fit-synthetic-hog-hair-pad-14x24x1.html

 

[Old2stroke]

Even lightly oiled foam packing material works well, but it has to be open cell foam. If you can breathe through it, so can the engine.

 

[SteveSr]

What you really want is the flat sheet polyester material that is used on Stihl MS170/180 filters. Cut to size and throw in the laundry to clean!

 

[TNsawman]

What you really want is the flat sheet polyester material that is used on Stihl MS170/180 filters. Cut to size and throw in the laundry to clean!

That lets a ton of fines through? I'd use an oiled foam filter in a 170 considering how caked full of dust the intake tube gets before the carb.

 

[SteveSr]

That lets a ton of fines through? I'd use an oiled foam filter in a 170 considering how caked full of dust the intake tube gets before the carb.

I haven't seen that but if the filter doesn't fit tight around the edges or the top cover is loose it could let stuff through there.

I appears that the OEM air filter for my car also uses the same polyester material It is large enough to seal well around the edges and I haven't seen any fines getting through... and I check when changing the filter.

This polyester is also a DEPTH type of filter and will trap debris through the depth of the material and not just on the surface like a thin paper or flocked filter. This gives it much longer life but makes cleaning more challenging.

The oiled foam filter is also a depth type but it has its own maintenance and cleaning issues. I think that the OP would be best if he could find some flat polyester filter material and cut to fit tightly.

 

[possum squat]

Felt type material works, what about actual wool like from a wool blanket type fabric?

 

[Jasonrkba]

I've used a lot of different things in the past, some good some bad. The pond/aquarium filter so far sounds the best. I love the Maxflo stuff and have been trying to duplicate it.

 

[kevin j]

Twinair sells, or used to, sell their dual density layer foam in sheets about 12“ x 16“. I think it’s about a half inch thick. I think I could get four or five motorcycle flat filters out of a $20 sheet of foam, one of the OEM filters were $25 a piece for that little flat piece of form