Because I'm always in a hurry because of my advanced age (I no longer buy green bananas) an accelerator is essential and possibly by good luck, I've never had a failure.
Unfortunately, because of my poor photography, the pen shown doesn't do justice to the high gloss finish which is as deep as it was when I made it despite it being on my desk since then and in daily use. It's on it's third refill.
I must stress that the accelerator must not be sprayed directly onto the pen, but one or two inches above.
Nothing but heaven itself is better than a friend who is really a friend. - Plautus