
IN the pic above is about a 2x2in. piece of paint filter 100% nylon
take it and fold it over A toothpick or other blunt instrument,but it has to fit into a stir straw..I bit off the end,wetted it with my tongue,and rubbed it a few times on the table to make it blunt

Below is what it will look like once you get it in the cart,in this case A 510

Here is what it looked like before inserting..A PFD...


THe tail will just slightly push through when you are pushing through with the toothpick,you will want to work the TP out,and grab the end with your teeth and pull a few mm out..It will fold down against bottom of cart when inserted..It may seem a bit bouncy when inserting into cart,so leave just a smidge of filter ABOVE the end of cart when cutting,push it in until it feels snug,if some stray material is sticking up,just trim..The straw can be about 10 mm or so...WHen the filter material gets wet,it expands just a bit..
I TAKE NO CREDIT FOR THE mods...ONLY THE FILTER MATERIAL...
Kevin