scratches from drill

[zachb]

What is the best technique or product to polish out a small scratch from a drill bit?

[Glassdoc]

Chances are slim to none.. I'd suggest buying the ball tip bits vs the tapered bits so it is less likely to happen in the future..

[GlassStarz]

you could try the buff pads dremil sells with some compound but chances are it too deep for the new guys this is one of the reasons you dig the impact point with a scribe before you hit it with the drill

[splitpit]

Maybe he was trying to drill a fresh hole where there wasn't an impact point?
Either way, using the scribe to create a starting point is wise or firmly hold your drill at about a 45 degree angle and create a starting point before drilling. I haven't found an effective way to remove those kind of scratches.

[Brent Deines]

It depends on how deep it is, but we use a buffing wheel and cerium oxide with good results. Delta Kits sells these products, but they are available elsewhere as well. There are more expensive systems, but I don't feel that most work any better. Novus has a great scratch removal system that will take out even deep scratches, but you won't like the price much.

The Dermel tool and wheels that fit that tool just don't cut it in my opinion. The type of wheel you use, and the quality of the polishing compound is the key. There are many different grades and brands of cerium oxide, and they perform very differently.

[harrellbenjamin]

What works for me is putting a little pressure(very little)on the drill and spin the collet with my two finger tips until I have a start depression in the glass then start very slow and increase as needed.

[tooldini]

Harrell that is what I do, just hold at 45 angle and press and twist with fingers. the drill will dig in enough to start but you will have to be very careful still.

[screenman]

I also use the spinning between fingers method but I keep the drill upright to the glass. I use round end burs at all times. One of the things to remeber when drilling is to keep one hand one the glass as a steady. We find plenty of guys who have been repairing before have not been taught this method. As for those little scratches, try treating them as small chips. Just drip in some normal resin and wipe out again so that it leaves a damp pit, then pit fill and polish as normal. When using this method to fill any small pit check when you put in the normal resin that the pit has nearly dissapeared, it is at this point that any rough are's that may need scribing will show up.

[jayjacque]

Twist with fingers. Never thought to try that. Hmmm. Next time Ill give it a go