Drill Saw bits - any good

[kjacko]

Ok, seeing as this forums search engine blows, i'm starting this thread.

The Drill Saw bits, ya know the drill bits that also saw as well?
They any good?

Screwfix do a set for about £10.

What experience do you guys have with them?
What meterials are they best used for?
What kind of jobs would you use one for?

Thanks for any advice

 

[Stivino]

Do you mean a hole saw?
http://www.screwfix.com/cats/A337704/Drill-Bits/Holesaws/Holesaws

 

[xerxes]

I think they can be useful, once in a while.

They can make crude holes in material where access for a jig saw or reciprocating saw is too difficult, and where you don't much mind about accuracy.

In my experience, they don't cut very fast. Also, I don't imagine the bearings of most power drills are designed for the sideways thrust they impose (but I don't know this for sure).

They are the sort of tool you keep for those occasions when all the proper methods of cutting into something don't work.

 

[kjacko]

Stivino,
no mate, they're not the ones. Iddly i can't find them on Screwfix now, yet i found them yesterday.

Xerxes, thanks mate, i guessed as much. I think i could have done with some when trying to cut a back panel out of my kitchen unit. Now i've kind of buggered my jigsaw.

 

[Paul Barker]

They are the sort of tool you keep for those occasions when all the proper methods of cutting into something don't work.

Stitch drilling usually does the job with a bash from a hammer and chisel to punch it after drilling a line of holes.

being an engineering type person I wouldn't expose my drills to side thrust.

What is often neglected in thought is the idea that good oldfashioned hand tools are sometimes quicker than power tools. Remember the manufacturer of power tools has one main aim. sell to you.