Thinking of adding a new product to my "product line"
Leak tester plate.
1/8" steel and 3/16" neoprene, CNC cut together.
I can just cut these and silicone together with a 3/16" barb, $20...
Or make a PNP $45 kit with a cheap sphygmomanometer and a boat plug for the exhaust port. I can test each first, to rule out the kit.
My current setup is 1/8" aluminum and 1/8 rubber.
Worked 2x until it didn't.