Have you tried JB Weld. Tough as hell and sticks like glue.

Big John
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On 30 Sep 2005 19:40:40 -0700, "wright1902glider"
wrote:

Has anyone seen v-blocks for sale at Lowe's or HD?

Epoxy doesn't offer enough strength. I'm attempting to recreate a
test-rig that the Wrights used before building the wind tunnel. It
consists of a regular bicycle with third wheel mounted horizontally out
in front of the handlebars. Attached vertically to either side of the
horizontal wheel are model airfoils or flat plates.

The theory was that using trigonometry, the wrights could evaluate
various airfiol sections by measuring the angle of deflection off
center, one airfoil vs. another.

Of course, it wasn't acurate enough for scientific purposes, hence the
wind tunnel, but it'll be fun to demonstrate at airshows.