Clear is a relative term. I believe all the laminating epoxies we use give you a more or less amber cast to the wood...in other words...it darkens the wood some. I consider the USComposites stuff to be "clear"....about the same as RAKA. I order it from USComposites in Florida and get good, fast service. They usually call to make sure you know what you are getting. I don't know of any clear fillers. I use the different colors of wood flour, wheat flour, cement coloring, etc. to mix and match the colors I'm wanting to fill. I don't go into a lot of contortions about being perfect, because I learned a long time ago that there's always somebody bigger, better, faster...or whatever. I just try to make me happy. I don't always succeed. After saying all that I guess you could let the mixed epoxy partialy cure and then use that for a filler...but that's a contortion most of the time. I'll bring my boat next week and point out all the imperfections.