1/2 diameter Rebar
1/8" thick steel washer or discs (in this case Ryan used the water jet to cut them out of some angle iron I found)
Machines Used @ TechShop San Jose:
Fixture table (welding table... that I cleaned after I was done BTW)
Pedestal Disc Sander
Hand Tools/misc items used:
Hammer (just in case... hammers can fix anything!)
Welding Helmet, gloves, general protection
Fixture/hold down (magnet and clamp)
Safety glasses & ear plugs too!
Mad welding skills
(Someone who is signed off on the waterjet already since I want to make it yesterday!) Thanks Ryan.
All done @ TechShop San Jose!
Step 1: Didn't have washers or discs handy... so waterjet time
He had to rig some clamps to get it done.
Afterwards it was a few simple taps with a hammer to get them free.
Step 3: Let's Grind! and... err Sand!
I used the bench grinder to remove most of the material and get the rough shape, finished off with the pedestal disc sander to make it so shiny and smooth!
I also smoothed out the edges of the discs (stake heads) so they won't cut my nylon guide ropes.
I used a vice grip to keep things in hand. Always secure your stuff properly when you grind, cut, etc. (seems lame to mention)... but seriously I have seen more than a few people get SURPRISED grinding parts.