HArbor freight has some for pretty cheap... Their in south Fort Collins now. I dont have any or i would loan them to you. I usally use a shop up North in Fort Collins (cant remember the name, but their off of College almost to Laporte jsut before JAX on the east side...) as thats on my way to the office. I drop my tanks off that i need drilled nad pick them up on my way home. I might have something laying around the shop that i've used for concrete but never used them for glass... I'll check and let you know but i wont know until tomorrow morning and wont post until tomorrow night.
