Quote Originally Posted by Ellis View Post
I wouldn't recommend using a drill to tap the holes (unless you're confident about the risks) - it's rather safer, if slower, to do them traditionally by hand - but otherwise this is exactly what you'd need to do, just at 200% scale!

I would suggest getting some quality taps as well. I don't know what the Aldi set is like, but cheap multi-packs are inevitably going to be quite low quality. A fellow builder was recently caught out by this; the really cheap specimens simply don't work. Some namebrand individual ones (you'll want M6x1.0, straight flute, hand taps) from pretty much anywhere should do nicely.
If you get spiral flute machine taps then they work great with a cordless drill. These are the ones I use: http://www.cutwel.co.uk/threading/ma...1-tb804-series

They are a bit pricey but go in nice and straight and the clutch on the drill makes it almost impossible to break a tap.