1 pieces @ 18” On your 18” PVC pipe, drill (11) 1/8” holes 1 ½” apart starting 1 ½” from one end as shown. The last hole should end up 1 ½” from the other end. Holes need to be drilled all the way ...
Paul Wainwright creates stunning images on the gigantic harmonograph he constructed in his New Hampshire barn The following contraption is a prototype of a drawing machine that was fashionable in the ...
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