Here is the first in a series of tips that were left out of Textured Bead Embroidery in the interest of space. I hope you enjoy them.
I learned the hard way that if you rip out your beads too many times in the same location it is very easy to wear a hole in the foundation. To repair the hole:
Cut a piece of beading foundation large enough to extend beyond the hole approximately a quarter inch on each side.
Apply a small amount of E6000 to the edges of the hole on the back of the project.
Attach the patch to the back and let it dry.
Embroider as usual making sure to stitch into the edges of the patch. The foundation may be a little harder to work with because the glue stiffens the foundation. The patch is reinforced as you stitch over the edges in the process of adding new beads.