Although I am a Great Supporter of "the right tool for the job"
and do advise if you going to make a career of this, probably best to get them
they'll pay for them selfs within a few jobs, I guess
If you want them Bruce would be your man
but sometimes for occasional use the cost just cant really be justified
which is my case, so a good work around is a blessing
Granted and very true Bruce there is a measure of risk!
as with all things "improvised"
but thats possibly what we do best in OZ :)

Still for a little time and a few dollars
it beats bashing them off with a hammer and screwdriver I guess

(it seems it works but risky in my book, hammer screwdriver that is)
I do believe in "right tool for the job" thought
(even if you got to kinda make one your self...
may not be a perfect 10 in every respect
but a lot better then nothing)
less chance of damage to object your fixing
or more importantly you *
and a lot less frustration mostly
Thank you again Bob

just my thoughts anyway
Blumbly pity Mate

( * but well there's also the possible beware as Bruce pointed out)