Cutting a Filter Open

^^^ There are lots of filter cutters like that one (Longacre style) on eBay for $20-$22 and you don't have to buy $25 or $35 or more to get free shipping like on Amazon.
 
I would recommend paying the few* bucks extra to get one with a few extra blades, I can't seem to find the replacement blades anywhere. Maybe I'm using the wrong keywords* but I've not come back with anything so to me at least it seems like once the blade is too worn the cutter is basically junk.
 
I would recommend paying the few* bucks extra to get one with a few extra blades, I can't seem to find the replacement blades anywhere. Maybe I'm using the wrong keywords* but I've not come back with anything so to me at least it seems like once the blade is too worn the cutter is basically junk.

Try looking for replacement blades for a pipe or tubing cutter. They have to be using some fairly common off the shelf size.
 
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