Drilling fixture used to drill symmetrical through holes.

Drilling fixture used to drill symmetrical through holes.

thingiverse

I printed this drilling fixture so I could drill a symmetrical set of holes in a prepared blank. The table and clamping block are keyed to allow the first hole to be located using the plastic model of the finished part, and all the other holes to be located by pulling the clamping block out of the table, rotating it one facet, and then re-inserting it. I use a center drill to start the holes, the a couple of jobber drills to bore through and bore it to finished size. Instructions The table and clamping block were printed in ABS with default Marlin parameters. A layer height of .2mm and a nozzle size of .4mm.

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