ok guys this is one of many post im sure i will need to make here, so here goes nothing lol. i need a bit of explaining on brush size. i was looking at the golden nib and they had brush head for sale. well my question is when they say lets say 18mm by 64mm. does that mean 18mm at the knot. i need to know this becuase i have access to a lathe and i was thinking about making a nice brush for myself. thanks again guys for any information

jason