A Drill Chuck for a Budget Mini Drill

摘要

A few years ago, on a whim, I bought a mains-powered budget mini drill on 'special offer' from my local Aldi supermarket; it must have been cheap, otherwise I wouldn't have bought it. The drill has speed control and has been very useful for intricate grinding and cut-off jobs, as well as proving its worth under my ageing car on more than a couple of occasions. In my opinion, the tool is let down by the poor collet chuck system widely used with these mini drills. Usually made from brass, the collets don't grip very tightly and soon wear out if the tool spins. Also, to use a reasonable range of drills, special types are required on a common size shank.