Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

5C collets ?? So you need a set of square collets , a set of hex collets  and a set of round collets  then you will find something superior called ER .
 Only a 1 minute job to change chucks or collet chuck  be it 3 jaw or 4 jaw or 6 jaw or ER32

My understanding ( which maybe wrong ) is that 5C only hold on the front end ??
ER hold the whole length thus more accurate.
But then again what would I know as i am not a engineer or machinist .
I am only a Kiwi with number 8 wire attitude and think outside the box skills

Cheers
Dennis