color fill

I have been using Rub N' Buff to fill the engraving on my acrylic pens, but finding it to be very time consuming. I find that I need to at least apply 3 coats. Heck, applying the run n buff 3 times buffing it out, re-polishing can take almost as long as making the pen.:mad: Anybody have any...

:confused: Does anyone have any suggestions on color fill for acrylic pen engraving? I have someone I use for pen engraving but they don't do color fill. I was wondering if the color fill was something I could do on my own when I get the pen back from the engraver. Mike