Note: I left out some items like letting things dry etc. to condense this write up. You should have some building knowledge like with Estes rockets or a few kits before doing a scratch built HPR rocket. I have built over fifty model rockets and also did a lot of research before doing this project. Also wear safety glasses and be careful using saws and drills.
Most of the parts used to build this rocket were bough from the local hobby shop. I had two 3 inch PML tubes and a 3 inch PML nose cone. The motor mount is a LOC 1.5 inch tube with 4 LOC 3 inch to 1.5 inch centering rings. The fins where custom cut from 1/8 inch aircraft birch plywood. The bulkheads are made from 1/4 plywood for the altimeter section that were custom cut to fit the PML piston coupler. I also used a PML parachute piston and LOC 3 inch body tube coupler and 11/32nd's brass tubing for the launch lug. I made both the 20 inch drogue and 60 inch main parachutes out of 2.5 oz nylon with 1/16 inch braided nylon cord. The shock cords are two 10 foot pieces of 1 inch tubular nylon. I picked up the chute nylon material at Wal-Mart on sale and together they only cost me less than 10 dollars to make. The tubular nylon was purchased at REI outdoor stores for $0.15 foot on sale.