Sometimes motivation behind building something as opposed to buying has to do with availability. Sometimes it has to do with cost. Sometimes it has to do with quality. In this case it has to do with all three. I set out to build blast gates with scrap material I had laying around. Mainly I did this because I didn’t want to have to order blast gates and deal with the shipping, and the cheap ones seemed a little….flimsy? There are high quality ones out there, but why pay for them when I can make my own? I figured I could come up with a design that I could crank out a bunch of parts for and then assemble as needed, so that is just what I did.