I use the filter bags from Duda diesel. I use 3 bags, one inside the others. the inside is usually a 20 micron, then 10 or 5 micron, finally a 1 micron. I cut the WMO with gasoline to thin it, and filter when its warm, by gravity. It take about 2-4 hours, for 5 gallons to filter. I use a 5 gal bucket over the bags. The bags are over another 5 gallon bucket. The top bucket has a 3/16th hole to limit oil flow. I am at work, so no picts...sorry
I think the 20 micron is unnessisary, but I still use it. Someone mentioned putting a magnet in the first bag. I dont, but I am thinking about it.