Untitled Gardening Project #8

[xiphmont]

The holes drilled and tapped in one side of each of the 48 cylinders must be mirrored on the other side exactly aligned to the same angles as if the holes in one side extended all the way through. They were not drilled directly through to begin with because drillbits have some flex and they often deflect off-true as they penetrate deeper into a dense material.

Turn a #8-32 stainless steel machine screw to perfect roundness. Tighten it down into one hole on a given cylinder and use it as a reference stop against the jaw of the rotary table's chuck. As set up on my mill, the 'stop' offsets the zero degree position on the rotary table by -9.8 degrees. Knowing that, drill the mirrored holes in the other side of the cylinders.