Windshield Repair Forum

I have been using carbide drill tipped bits from Trihawk(dental supplier). They were the same type I used at Safelite(happily my ex-employer). Recently I had several tips break off in the windshield. I'm not sure if my dremel tool was running to fast causing heat to break them or just a fluke. They also seem to do great on 1st chip but take forever on the second. They cost $109/100. How many chips can I drill before disposal of each bit from Delta or any other supplier you may suggest? Can anyone refer me a great brand at a great price?

Dave
T & T Auto Glass, Inc.
Ohio

PS. This is a great site! Just reading a lot of the messages is a big help in growing my new business which has been mostly replacements in the past. I have already done many of the tips over the years and have also found success( ie. heat, thumb pressure, cure under pressure, sliding the bridge...love the baby oil trick)
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Good carbide bits will last a long time. Just have to use the right speed and not burn them up. Also remember not to drive them into the laminate or old repairs cause they'll need to be cleaned. Believe it or not I'll find myself getting getting 30-40 repairs off of one drill bit.

Try reducing speed and pressure and they should last longer.

Thanks for the advice. I have applied pressure to rush the process on drilling and have popped the lami too. I have been using slow speed since several started to break off. Any "tips" on where to get good ones?

Thanks again StarQuest!

I use bits from Janvil. Good price and they last a long time. I haven't used them but I understand the bits from Delta are also very good.

I also use a dremel and find applying light presure than relax a couple times rather than just going for it in one shot saves the bits also I use the 5000rpm speed not 10000.
I have stopped using the carbide bits with the tip and gone to bits from LR seem to get about 30 holes out of each.

Janvil and Liquid Resins have good bits at good prices, especially in bulk. Delta has good bits also, but i don't know what the cost for 50 or 100.

I get mine on the black market now... I don't know where they come from but they work goood 8)

GlassStarz,
I totaly agree with you. I always drill on low speed at 5000 RPM and I also every couple of seconds pull the bit back out so that it can cool down for a sec. I can usualy get about 50 repairs with one bit.
David
Coitster

hey guys my my lowest drill speed is 10000. is this too fast? should I get a lower speed drill?

Wally mart sells a dual speed dremel for $19.95 you will have to buy a smaller nose to grip the bit or use the one of your present drill or you can spend a little more and buy that cool one delta sells

buy a smaller nose to grip the bit

The "nose" that GlassStarz is talking about is a collet. Make sure you have a 1/16" collet for any windshield repair bur.

If you don't, we sell them (12-3), or I imagine you can pick them up anywhere they sell Dremel parts.