The mini-foodgeek has a small vise on his workbench that he uses to hold random scraps of wood so he can cut them into smaller random scraps.  Most of what he's been cutting lately has been dowels, and the flat jaws that came with the vise didn't work very well for the task.  Here's how to turn some scrap aluminum into a pair of vise jaws with a v-groove to hold round material.

You'll need access to a mill, some 3/8" thick material, and a 60 degree drill-mill.  Being mill-less at home, I made it at techshop.

Step 1: Square up the material and cut it to size

Cut two pieces of aluminum roughly the size of the original vise jaws.  Square the material on all four edges and machine it more or less to the size of the original jaws.  Given that my kid's vise is from harbor freight and the bolt holes seem randomly drilled, I felt like it was a safe bet to just eyeball the measurement.
<p>Thanks for the demo. I have been thinking of simply using a wood block, drilled one size smaller than the tube, into the end of the block, then cut in half. Seems doable. Any advantage to the V rather than a ( ?</p>
Instead of the 60 degree mill bit you could have just used a plain end mill and held the work at an angle. Maybe the shop you were in did not have a tilting vise though?
Did you use aluminum so it would be softer and not leave marks in softer materials?
That's certainly a nice feature, but the real reason is that I just have a lot of random scraps of aluminum sitting around and it's incredibly easy to machine.

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