I have a crude tip curing oven that I have used for 20 years. It is made out of a large metal coffee can with a 15 watt light bulb in the top of it. The can is notched on one side for insertion of the tip. I glue the tip overlays on, clamp them and insert only the tip in the mini oven. Curing time is 4 hours. I have used it for over 700 bows and never had a tip come off or had a problem with the glue adhesion at the tips.