I looked at all kinds of ways to try and filter my beer and none of them were very cheap. I wanted to be able to filter the beer and not lose much of it in the process. I also wanted a cheap easy to clean reusable filter media. My filter cost me about $20 not including the tubing which I already had. I used 2" pvc pipe but any size would probably work. The filter media is a polyester voile curtain I got at Big Lots for $4.
I use a corny keg to do pressurized fermenting so I put the filter between the kegs when I transfer the beer. I only set the pressure at about 15 psi so it's slow. I put the fermentor keg up on the counter top so gravity can give me a hand with the flow. Very little beer is lost in the process which I like, don't wanna waste beer that's alcohol abuse. I can't really comment the filters efficiency as I have nothing to compare it to. But I can say it's the best beer filter I've ever had
I have used it to filter two brews and it worked great on both no trub made though. After I'm done I just pull the curtain out and rinse it out and wash it with the next load of laundry. I have discovered it's better to sew the cut end unless you like a zillion white hairs in your clothes.
All the pieces are standard pvc fittings with 2 nylon 1/2" npt to 1/4" barb fittings and 1 cheapy stainless sink strainer. I cut the pipe 12" long which makes the whole thing about 18" long total. After I had it together I let it sit for about a week until the pipe dope smell
was totally gone. I put the sink strainer on the output end to keep the curtain out of the outlet fitting. I then crammed as much of the curtain in the pipe as humanly possible and cut it off.
Please forgive the crappy pictures my phone sucks as a camera!