To calrify Mikes point a bit you need to use a *conductive* epoxy or paint. Plain ol' clear two part epoxy is an insulator and will defeat your objective.

I've fixed DMD's with ribbon type connectors using copper window defroster paint available at your local auto arts store *cheap*. The copper paint itself has very little mechanical strength so after I test that all is working I then put a few drops of super glue on the repair to give it some rigidity.

Others recommend silver bearing conductive glue. This is VERY expensive and is intended for electronic prototypers for quickly adding or modding traces on circuit boards. It does the same thing as the cheaper copper paint but is overkill in my opinion. It also has no mechanical strength and would pop off again easily if not glued down.

As for drilling, I admire whomever was able to pull this off. Number one, you would need a diamond coated drill bit to cut the glass. Number two, you risk outgassing the plasma wich wold immediately destroy the display and number three, you risk cracking the glass. I have had some luck chipping the edge of the glass away with a carbide pointed metal scribe. I had to use my magnified headgear to do this and still had the same risks as mentioned above. I was unable to expose enough of the lead to solder but was able to use the copper paint to make the connection again.

In the end, be prepared to buy a new DMD but certainly use the broken one as a learning tool!