Many of you already do this, but some may not know .
When changing jaws on chucks using Allen Keys takes heaps of time.
Cut off a 5cm section & insert it into a cordless drill, set it to a slow speed & see how much quicker it is.
I have several sizes which I keep in with chuck jaws.
This can also be applied to many other similar jobs.
HTH
Col
I agree this will speed things up but there is also a risk of a powered 'key' damaging the socket on the screw, much like many people using powered screwdrivers damage the screws
. And if you've got a damaged, countersunk, allen headed bolt in your chuck it can be a nightmare trying to get it out as there is no way of cutting it off, or cutting a slot. You are left with drilling it out and potentially damaging your jaw carriers. I would always change jaws 'by hand' and even then make sure I clean any dust out of the 'head' to ensure the key goes fully into the recess.
One other tip, put some copper grease on the bolt threads to prevent them locking in. It's often referred to as 'anti-seize' grease, for just that reason.