Decided to try my luck at using tiny countersunk screws to hold a 65mm fiberglass airframe to a coupler. I've been practicing (see photo of my practice tubes) but once in a while I get a screw that strips the threads out of the hole. There are only 2-3 threads per hole because the materials are so thin.
Question: Is there a good technique to fill the hole with something and then redrill and re-tap the threads?
I've tried using CA glue, aeropoxy (cured 24 hours) and 5 min JB Weld (cured for 2 hours). They all fill the hole okay and drill out ok, but when I try to use a very new (sharp) tap to make the threads (slowly), the glue/epoxy tends to crack/break and I end up with a hole with no threads (where I started).
These little screws don't have much force applied to them when inserted; light finger tight. I'm hoping there is strength in numbers (using 16 of them on one coupler, 2 rows of 8 each, because I thought it would look cool after being painted).
Question: Is there a good technique to fill the hole with something and then redrill and re-tap the threads?
I've tried using CA glue, aeropoxy (cured 24 hours) and 5 min JB Weld (cured for 2 hours). They all fill the hole okay and drill out ok, but when I try to use a very new (sharp) tap to make the threads (slowly), the glue/epoxy tends to crack/break and I end up with a hole with no threads (where I started).
These little screws don't have much force applied to them when inserted; light finger tight. I'm hoping there is strength in numbers (using 16 of them on one coupler, 2 rows of 8 each, because I thought it would look cool after being painted).