DeWalt 8mm Extreme 2 HSS Drill Bit
Bought to drill holes through a hefty ridge beam to bolt on 4x2 timber.
First 2 holes were great but the 3rd hole that was it, couldn't get it through. Reverted back to a conventional drill bit that could be sharpened every 4th hole and got the job done in no time at all. For me it was a waste of money.
19 Aug 2015
Quite a bit better bit.
I'm just an occasional DIYer so my tools don't get heavy use. I usually buy cheap sets of HSS drill bits but needed to drill some angle iron and my 10mm bit was ruined.
This one was impressive. Clean holes, drilled quickly, exactly where I wanted them (it didn't wander about as I started). The bit still looks like new.
The tip is an unusual shape so the effect is a bit like drilling a small pilot hole and following up with a larger bit. Probably not for people who sharpen their own drill bits.
25 Aug 2015
Use the best drills
Do not waist your time with cheep drills, These drills will last longer and get the work done in half the speed, buy the best and you get the best results
25 Jul 2015
This bit was better than expected. It is HSS ground and made in Germany unlike other bits I could mention. Used with cutting fluid these breezed through stainless steel 3mm. I have done 30 holes so far and still looks new. No wandering and cut immediately. I usually use Heller or Gurhing but needed to complete a job quickly. Excellent substitute will go for the 10mm and see how it performs.
3 Jun 2015