A fee years ago I obtained 3 sets of MT3 taper metric collects sizes 2, 4, 6, 8 etc. Made in China of coarse. There are 3 slots in each collect. As I have a few spares is there any way I could enlarge the 4 mm collect to 5 mm? The 6 mm collect will not clamp down on the 5 mm tool. I thought of filling the collect with lead and trying to drill a 5 mm hole on the lathe but I am not sure if I am wasting my time. I not after super accurate just close. Any thoughts would be appreciated.
Thanks
Jan