Bosch X-Pro Metal Drill Bit Set 7Pcs
What am I doing wrong here?
I bought this product to drill holes 10mm wide, through 4 met post spikes. The material is galvanised steel about 3 mm thickness.
I used 18V combi dril and the result I got was 1) lots of noise
2) a very shiny conical dip on the steel surface
3) a very worn out drill bit.
Finally I started with the smaller drill bit to create a hole and then went up the size to make it bigger. Took me about 1 hour to do
18 Sep 2014
Snapped on first use
I realise I am no expert but I have been drilling holes in things for several decades.
I accept that drill bits snap occasionally but this one went within 1 sec of first use.
I had already drilled a hole with a 3.5mm bit but I needed it a little bigger so I used the new 4mm bit. It snapped almost instantly although not quickly enough to not get itself jammed in the hole. Rather than speeding things up, I then had to drill 2 completely new holes because I couldn't remove the broken drill bit.
I have since used the 3mm bit without any problems so hopefully the rest of the bits will also be ok.
For the price, I can't be bothered to complain and I will just buy a replacement 4mm.
Still, it is very annoying and the reason why I cannot recommend this drill bit set.
4 Sep 2014
A cut above the rest
Excellent drill bits that's why I bought Bosch. A first class service and only a few hundred metres from my home.
27 Jun 2014
Good quality as you would expect from Bosch. I like the handle case too. Very compact and fairly robust. I always lose my drill bits so I like the inclusion of the case.
16 Jun 2014