I just stumbled on Crafter's Community while searching for money saving crafting ideas. I was hunting for info on how to make the silicone light bulbs. I found your post and was delighted with the info. I tried your info using a tube of 100% silicone caulk. I couldn't get it to work. Please tell me what type of silicone you use and where can I buy it. I really would appreciate your help. Thanks so much..