Bosch 'SELFCUT' flat bits - review.

Dec 06, 2009 7 Replies
T

Buggered my 22mm flat bit the other day, drilling holes for deck lights & hit a coach bolt. Trust me, flat bits won't drill through coach bolts :-)



Ordering some stuff from TS, I noticed these (link from Axminster has better detail)



formatting link
to be twice as fast as a normal flat bit, thought I'd give one a try. Very impressive! At least twice the drilling speed, probably more, it actually took me by surprise the first time I used it. Really nice clean hole as well.



Only drawback is that when drilling a blind hole you have to reverse it out like an auger.



Claimed to last three times longer than a standard bit - if it does I'll be happy with the extra cost.


Vote
Twitter Facebook LinkedIn
R

formatting link
> Claimed to be twice as fast as a normal flat bit, thought I'd give

Does that mean you can hit *three* coach bolts before it's knackered?

Vote
Twitter Facebook LinkedIn
T

formatting link
>>> Claimed to be twice as fast as a normal flat bit, thought I'd give

I've made a mental note not to do that again :-)

I had to fit 20 deck lights & thankfully I didn't hit the bolt until hole

19! Hole 20 was worn through rather than drilled.
Vote
Twitter Facebook LinkedIn
Y

Trouble is one[*] often can't tell where there's a nail or screw embedded in a piece of wood one's drilling. So I've resisted buying super-duper bits like this: buy the cheap ones, maybe sharpen them up once or twice, but basically they're disposable.

  • well, this one, in the work I do, anyway
Vote
Twitter Facebook LinkedIn
A

The easiest way to find a hidden nail or screw is to use a new bit:-)

Adam

Vote
Twitter Facebook LinkedIn
T

Major use for the 22mm one I goosed was drilling doors for latches which is fairly safe. Next time I fit deck lights I'll prolly buy a cheap 22mm bit in case.

Vote
Twitter Facebook LinkedIn
R

Nah..............Wotcha neeeeed is one of dese for anyfing llike dat... Innit

Ebay 120430558792

Vote
Twitter Facebook LinkedIn
T

Could do, but you have to prise the core out of the holesaw after every cut, so a flat bit is quicker innit?

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required