Print design on 1:1 scale
The picture explains itself. We need to take this route because our hands are not programmable like robotic CNC tool arms. We need a mold to make drilling the holes at their exact locations a bit easier. These designs show the water collector and jet plate that will be made out of cheap acrylic plating. Glue mold on work piece
My personal favourite: pritt (nicked from my girlfriend who works with children a lot, ahh where is the time where we were using that a lot...). After the glue-ing, saw the plexi to something that resembles a rectangle as closely as possible. That will make clamping the work piece in the vice that much easier (perfection is almost impossible). Drill the marked holes
Don't punch drill the motherboard socket holes and the clamping holes that will screw both halves just yet. It is better to drill them after the copper half is completed. It is of utmost importance that those holes line up perfectly with the copper half. The trick will be to line up all individual pieces, clamp them together, use a piece of wood under the Perspex when drilling holes, it'll help prevent the drill bit from breaking through the last little bit and causing cracks. If you would get to this stage yourself, when using only copper it isn't 1/10th as difficult as when using plexi. The copper plates will always have 2 parallel planes, thus clamping those layers will be a cakewalk. This is why I would advise first timers to stay away from plexi. You will understand when you get there.
I never secured the vice to the worktable of the bench press. Always held it with my hands, precision will suffer, but without an XY vice the time per hole would be tenfold. So, grow some biceps and never forget that a spindle that is turning at 3000rpm holds a lot of potential energy. I got a chance to witness the vice going berserk after the drill got caught exiting the plexi. Imagine that vice spinning together with that drill ... panic. So safety freaks should always bolt the vice to the bench press and wear safety goggles. Of course you do as you like, it's your face and body at stake.
Check out the result -->>