Showing posts with label Moxon Double-Screw Tapping Ash. Show all posts
Showing posts with label Moxon Double-Screw Tapping Ash. Show all posts

Saturday, January 15, 2011

Wood Screw Fail Pt 2

So here are the results of my efforts the first time. Fairly hideous. The plug is my stubborn attempt to thread the rod, when it was obviously too big for the thread box. So instead of advancing along the metal threads in the thread box, the rod didn't advance at the proper rate resulting in the bit destroying the thread it had just cut.


After some sanding to bring the diameter of the rod down, these are the results the 2nd time through. There is pretty horrendous tearout tangential to the grain. I attributed this to a slightly dull bit. Self admittedly, my sharpening was pretty half hearted. All of this would have been "good enough", since I am quite intent on getting a functional vise as compared to a pretty one. Unfortunately, the screw binds 3/4 of the way through the vise face. Not functional or pretty.


Another sharpening session resulting in what I would consider a sharp bit, but 2 feet of rod that wasn't sanded down. I gave an attempt to thread the rod without the face of the thread box attached. Not a good idea, and the result is horrific enough that I will decline posting the result.

Tuesday, December 21, 2010

One Half Double Screw

Finished tapping the holes on the backside of my Moxon Double Screw. Few things, even with a sacrificial backing, the ash is prone to blowing out the back when drilling through. I suppose if my marking was good enough, I'd have the confidence to drill part way through and finish from the opposite side; I don't. The drill press is an interesting machine. It doesn't really seem to come equipped capable of any sort of repeatable or accurate drilling, which is ironic. It definitely needs an aftermarket or homebrew table to permit consistent placement and repeatable results piece to piece. Lastly, tapping a 1 1/2" wood thread through 8/4 ash is a decent workout. Those skinny woodworkers must be a wiry bunch.