This was my starting point:
But I use a chemistry “retort stand” for filtering.
I take the resin tank out, and the resin cartridge. I open the top of the resin cartridge, and put a small funnel + filter in the top. I clamp the resin tank to a retort stand using a rubberized Eisco clamp. I attach the clamp to one of the black tension arms on the resin tank. The clamp has a little lock-adjustment that lets you change the angle of the tank – you’ll likely want to adjust the angle a few times, while it drains. So the tank is supported at two points: one by the funnel on top of the cartridge, and the other by the clamp.
In the beginning I used three contact points but I find now that I’m comfortable using the locking mechanism on the clamp, two contact points suffice.
I let the tank drain for a few hours, then use the tank cleaning tool to get the remaining thin film of resin mostly out. An hour more of draining usually has the tank pretty clean.