rickyreed,

Good questions. There are different styles to fit a host of varying applications and give the user a choice. The result desired will determine your choice. Most bits will accomplish our goals in most situations so it will probably boil down to a preference issue.

If you use a large diameter bit such as the round tips, the diameter of your hole will also be bigger. This will produce a minor cosmetic difference compared to a small diameter bit like the tapered style. This type bit would be better for cleaning/opening up lager impact points.

If you use the smaller diameter bits such as the tapered tips, your inside hole diameter will be smaller and although its a mild difference, more cosmetically appealing. I would use these for small impact points that need to be opened up or stop drilling the end of a crack. I would suggest that you use a slow RMP with any style bit to prevent the drill bit from walking during the initial contact on glass. There are different outlooks on when to drill and when not to. I will give you mine...

I almost never drill stone chips unless the impact point will not allow resin to flow or if the break will not fill. This usually can be determined by gently flexing the glass. Almost 99% of the time I use the tapered style bits in these circumstances. I always stop drill and anchor cracks to relieve the stress. I also always use the tapered style bit in this situation. I have found that the tapered style bits meet my needs almost all the time but I have other styles should the break require it.

What ever style use choose the end result should always be a properly filled and cured break. I hope this helped somewhat.




Pay it foward,

Brian
www.safeglasstechnologies.com

info@safeglasstechnologies.com</p>