Using FG-701 diamond bur

ChipRite · Post by **ChipRite** » April 2nd, 2006, 12:01 pm

Hi,
Does anyone know if the FG-701 diamond bur also works well and does it last longer than the carbide one?
Regards
ChipRite

firebob66 · Post by **firebob66** » April 2nd, 2006, 1:25 pm

My opinion on bits is as follows.

Any bit that has a small head that is larger than the supporting shaft could be trouble if it is a smaller thinner style. I have seem many jobs done where the head of the bit is left behind in the repair attempt. I have used both carbide and diamond (very little, as I am not a huge fan of drilling all repairs) and had good luck. It's a personal prefference. Diamond will likely last longer if it is of good quality. You will find a great deal of opinions around bits and drilling.

Best of luck!!

Rolf Peterson <
Advanced Auto Glass Repair
Hastings, MN

ChipRite · Post by **ChipRite** » April 2nd, 2006, 2:43 pm

Hi,
Thanks, I have noticed that Delta has tested the performance of 3 types of burs and found the FG-701 (carbide) the best with the least breaking. I will watch this thread for further comments on the use of diamond burs, especially the type recommended. I have also read that some technicians break off the tip of the bur when it blunts and it is sharp as new again and can only think this must be the FG-701 carbide
Regards
ChipRite

firebob66 · Post by **firebob66** » April 2nd, 2006, 7:30 pm

I would like to try this bit, and will soon. Thank you for the info!!

toab · Post by **toab** » April 2nd, 2006, 7:55 pm

Out of curiosity what do the numbers mean after the letters? ie. fg329.fg1171,fg701 etc. is it type? hardness? size? brand?

ChipRite · Post by **ChipRite** » April 3rd, 2006, 11:22 am

toab wrote:Out of curiosity what do the numbers mean after the letters? ie. fg329.fg1171,fg701 etc. is it type? hardness? size? brand?

Toab,
I think the FG stands for Friction Grip and the 701 is the type number for the size of the drill, in this case a longish tapered point and a stem diameter of 1.6mm and a hole diameter of about 1mm. Then you get the same size in carbide tips, diamond tips or hardened steel. Carbide and diamond can drill glass etc. Delta prefers FG-701 carbide and have tested against FG-02 which has a round ball tip.
Hope this helps.
ChipRite

toab · Post by **toab** » April 3rd, 2006, 5:59 pm

Thanks chiprite for the info on the bits.that helps a little bit.

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Using FG-701 diamond bur

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