Thread: Sutton drill pits - frost vs P&N vs viper

Purchased some 5% cobalt drills from China (5Pcs HSS-CO High Speed Steel M35 Cobalt 4/5/6/8/10mm Drill Bit Tool Set AU $7.99)https://i.ebayimg.com/images/i/38184...0/s-l140/p.jpg
They are cheap and fantastic.
I did a torture test with the 10mm - Drilled some hardened steel - tip went blue and damaged - re-sharpened it about 3mm back.
It re-sharpened to razor sharp and tough again. I will be using these in future if I can get them.
I saw a 1/16 to 1/2" cobalt set on the counter in a company I visited recently for $70 Looked similar quality.
Also
I am buying these (Carbide Tip Metal Cutter Stainless Steel Drill Bit Hole Saw Holesaw 15-55mm)
https://i.ebayimg.com/images/i/40132...0/s-l140/p.jpg
Carbide tipped holesaw/broaches They are also tough and great value.
Used the 30mm ($7) one for boring holes in 6mm steel plate and a 20mm ($5) one for boring cleanly through a brick.
regards moorebrm

Moorebrm,

Is there any chance you could provide a link to the Drill Bit Tool Set and the Carbide Tip Metal Cutter Stainless Steel Drill Bit Hole Saw Holesaw?

Thanks.

https://www.ebay.com.au/itm/Carbide-...-/401323731487

You're a champ!

Cobalt Drills purchased
https://www.ebay.com.au/itm/Hot-5Pcs...gAAOSwMVdYIZqv
regards

Thank you!

I purchased the Sutton metric and imperial sets (around$70 ea) from Bunnings 18 months ago.
Not happy with them. Small drills blunted quickly, many drills slightly bent, sharpened offset and drill inaccurate hole sizes.
P&N were the bees knees once but I don't know where to get quality precision drills from now.

Originally Posted by Lappa

Just a question to those with the Tormek DBS22. With that jig can you accurately recreated the exact split point of the Viper bit or do you just provide a standard drill end shape?
I would have though you would have needed a very thin wheel to get that centre, almost right angle shape.
Cheers

Not exactly the geometry of the Viper bit but very close. I think with experimentation that it could be replicated on the DBS22 jig, but why bother when the Tormek DBS22 instructions / method gives a similar result that is equally as good as the Viper geometry imo.

Easiest way to explain - check out the Tormek clip - https://www.tormek.com/uk/en/grindin...ng-attachment/