Well Larry got me going down this road. I wanted to find out how the liner system works for a gravity feed cup.

I was wondering if anyone here makes use of a liner of some sort when spraying woodworking and how they make use of it.

I can see this being of value if one does a fair bit of spraying or a really large piece say like a chest of draws and one is putting on a sealer and a toned top coat of some sort. But wondering if any hobby woodworkers use this kind of setup and how they do it to make it worthwhile.

Check out the video it explains the PPS system.

Something i learnt about was the ratio ruler, but still a moot point for me in the quantities i use and spray with.

Would you ever consider mixing a batch of say shellac then keeping it for a month in the PPS line sealed up?