we're hiring! blog about imgur imgur store imgur apps developer api advertise need help? terms privacy ad choices Upload Images Video to GIF Make a Meme New post sign in sign up #secondary-nav .header-center #topbar Uploaded 20h An adjustable crack machine, for practicing climbing cracks of different sizes. Can adjust from fingers to offwidth. Parts: 2x 2x10s 80" threaded rod 32 washers 8 acorn nuts 8 wing nuts 16 nuts Couple wood screws for mounting Tools used: Drill Wrenches (to help nuts past sections of rods that has thread issues) Clamps (to hold things in place while screwing) First step: Marking and drilling holes every foot, alternating towards the front and towards the back. I got all 1/4" rod, but drilled holes at 5/16". This wiggle room (combined with alternating holes) will al...