Quote Originally Posted by cassady View Post
I would respectfully disagree -- if you're changing color, you should flush and clean the pen. Sometimes manufacturers use different formulations for different colors (noodlers does this quite frequently), and (rarely) two formulations can react and turn to sludge, which is not a good thing. Generally, you're safe -- but it only takes once to gum up the works of an expensive pen -- which is easiest cleaned out with a ultrasonic cleaner, by the way.

Just my two cents.

cass
it's quite possible. all of my ink is noodler's and all of it is bulletproof, which is the same base compound i think. i frequently mix them on purpose (not just when i'm refilling) to create custom colors, and have never had any issues. but then again, i've been using a fairly homogenous set of inks, so i'm prolly just lucky.