Originally Posted by craftycrunchymama
I too would like to know these answers if anyone has them. I only use the brush tip, not the chisel tip.
It is super simple to change nibs... just gently pull out the old and insert the new. Having the special tweezers helps, but isn't necessary (as long as you don't mind having inky fingers - LOL).
The medium round nibs are NOT as small as the tiny nibs on the original... they are more like the sketch ones but shorter and firmer... some people really like the medium rounds and some don't... personally, I find I can get into smaller spaces with my brush tip.