What size hole and what size metal are you drilling?
20mm hole in 3mm steal I've used Starrett before with good results.
Just to add humour to the conversation:-
When doing a hole in the manner and position that your recipient requires you must use the correct method, size, speed and not forgetting lube. Place your end carefully at the point where you need to penetrate and push gently at first and build up the pressure until your end (of the drill bit) and the hole become warm. At this time please use lube to reduce friction burn for the hole and to stop the blunting of your end.
Now that your going hell for leather to do the hole, remember to slow down towards the end. You can only drill as deep as your bit. Now that your near penetration and your fulfillment of your first intention of doing this hole, reduce the amount of force and carefully pop through the other side. Now stop all engines/motors and withdraw your bit, job is done, hole is done you can now sit back and believe that you are a hole drilling expert.
If anyone thinks I'm talking about intercourse your sadly mistaken and you've got a dirty mind.
But before you go to sleep don't forget to cuddle up for a minimum of 2 minutes, that's a girly rule so I've heard. I'm talking about the DeWalt cordless of course!
You have got a dirty mind
