I want to put one 10-24 helicoil in one 1/2 inch deep stripped hole and don't want to buy an installation tool. Did anyone ever take a smaller screw or nail and cut a slot in the end to make a tool? There already was a helicoil in the hole at one time and somehow it got deformed and I pulled it out with a needle nose plyers a while back. Keep in mind that I'm the worlds biggest cheapskate.