Correct way to use an impact driver?

[N_Cook]

So a steel cylinder you whack with a hammer, on the other end a collet
for various screw head bits and a L or R hand thread option ring.
So do you use a heavy lump hammer/lead headed hammer rather than lighter
claw hammer?
Do you press down to partly engage the internal spring to keep the bit
in the bolt head or fully push down so the spring bottoms out, before
whacking with the hammer? or hardly push against the spring at all, just
enough to locate the bit in the screw head?

[ajh]

Post by N_Cook
So a steel cylinder you whack with a hammer, on the other end a collet
for various screw head bits and a L or R hand thread option ring.
So do you use a heavy lump hammer/lead headed hammer rather than lighter
claw hammer?
Do you press down to partly engage the internal spring to keep the bit
in the bolt head or fully push down so the spring bottoms out, before
whacking with the hammer? or hardly push against the spring at all, just
enough to locate the bit in the screw head?

I engage mine into the screw, twist it the direction I want it to go and
use a 2lb hammer.