Something else you can try is a Helicoil insert, these are made to repaire stripped out threads. They come in various diameters and lengths, they are made from stainless steel. If a 10-24 bolt is what you would use to wrap wire around then that wouls be the size you would use. They are generally "tight" together but you can open them up for more space between coils. The price varies by size but they are not horribly expensive, one down side is the coils are not round but tapered, they still look good on a built model. Just another option to consider.