luthj
Engineer In Residence
Indeed, start small. The nice thing about aluminum angle, is that it can be easily cut with any wood saw that has a carbide blade. So most chop/miter saws. While I did a bit of welding to make my bracket, aluminum with a few 1/4-20 bolts would have been totally, fine. Just use nylock nuts and spring washers where appropriate. The filter base I linked above has a few threaded holes that make mounting to a bracket fairly painless.