|Project by RoodyJ||posted 04-11-2012 11:55 PM||4033 views||10 times favorited||11 comments|
I just saw William’s posting on the Stumpynubs Boxer and I wanted to also join the list of happy builders. Mine is made from MDF scraps and a few acrylic pieces I adapted to the design. The pre-slotted guide is acrylic cut on the jig itself, and mounted with three 6-32 screw studs for easy changing. The added stick-on tape on the side is a guide for measuring offset, variable spaced cuts if needed. My gears were created with more teeth than the design specified and laser cut by a friend who has an engraver/cutter. Thought this would add a little more accuracy to each turn of the screw. One thing I noticed on the jig that I had to fix (see detail photo) was that the repeatability was a little sloppy due to minor flexing and play in the hold-down screw and bearing. I just added a wood block and some nylon fence slide material to tighten up the thrust nut mounting and contact with the threaded drive rod. As long as I remember to use a backer when I cut the box joints to eliminate tear out, this baby really works well. Thanks Stumpy!
-- Jim, Maryland