Which drill part?

[sobeitjedi]

Hi.

I need to drill some holes in a wardrobe door in order to attach handles. The handles come with the required screws and fittings and say I need to use a 5mm drill. So here comes the daft question ... I've got loads of drill parts but how do I know which one is a 5mm one?

 

[morrik27]

You might find that a 5mm drill has the size stamped on it at the end.

If not you could get away with an imperial equivelant ( I believe it's 3/16")

If not you could measure the diameter of them with a set of vernier calipers, or roughly hold them up aganist a ruler , although it won't be exact if you use a ruler - which it may not need to be for your requirements

If in doubt go buy a new one and keep it in the packet/tube! - only be a couple of quid

 

[neds]

Measure the shaft diameter, much easier than measuring the twisty bit! Wont be accurate with masonry bit or SDS bits though, true for pretty much all other drill bits.

 

[big-all]

4/5/6/7mm will be fine the 4mm will mean the thread will screw into the hole

6 or 7 a bit loose just pick a drill around the right size youll be fine

as morric says the size will be stamped on the side off the shaft near the end

 

[Deluks]

Make sure it's a brad point or hss bit if you are drilling into timber/ chipboard/ mdf. Go slow, and if poss drill from both sides to avoid any possible breakout (chipping) if it's laminate board. tape over the hole before drilling or clamp on a thin scrap bit of timber and drill through that.