To make this project, you will need:
A measure tape.
A hack saw.
A drill and a 3/4" drill bit.
Hot glue gun.
You should be able to find one for less then$6 on eBay.
Two taps, drill bits and a tapping tool for an 8/32 and 5/16 x18 threaded holes.
You need a #29 drill bit for the 8/32 tap and
A 17/64" drill bit for the 5/16 tap though a 1/4" drill bit will do.
A Dremel tool.
Hand impact punch
A Drive Socket Set.
is built into a short length ( 11 5/8" ) of common one inch PVC water pipe with the flared coupling on one end. You do need to get the schedule 80 pipe for strength, because of the sliding hammer impacts.
Schedule 80 one inch water pipes are available in Lowes and Home Depots.
Hammer Group ;
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A two inch length of one inch diameter iron rod.
Some stores sell iron rods that big.
I found mine as a discarded swamp cooler fan shaft.
A 3/8" diameter 4 5/8" free length compression spring that was in my bin.
You could use two, 2" compression springs.
The spring needs 11 Lbs to be compressed to a 1 5/8" length.
A 5/16 hex bolt 5 5/8" long with full bolt length threads.
A 1 1/2" in diameter 0.05" Thin Washer with a 0.35" hole .
A wood Pull Knob.
you can find knobs on eBay.
A round head 8/32 machine screw 1" long.
A 1/4" diameter 8/32 standoff 1/2" long.
Anvil Group ;
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A 1 3/4" diameter 1/8" Thick Washer with a 7/8" or 3/4" hole.
A 5/8 nut and hex bolt 2 1/4" long fully threaded.
A HEAVY Copper 1to 5/8 thread reducer as extra impact rest mass.
You could use a half dozen 1 inch 11/16" hole washers and another 5/8 nut.