Welcome to the DeeperBlue.com Forums, the largest online community dedicated to Freediving, Scuba Diving and Spearfishing. To gain full access to the DeeperBlue.com Forums you must register for a free account. As a registered member you will be able to:
Yes and no, I haven't bothered to put the painted nose cone on a gun yet but the painted end caps for the impregnation chamber leak a little through the paint, so lost a little hope for the painted nose. I'll probably test it in anger next week.Did you test the painted version for gas permeability?
Yeah, a few years back, I had that issue on a few of the carbon fiber barrels that were a little bit "resin starved" leaving the inner wall just a tad too rough. I solved that issue by giving it a layer of epoxy and then wet sanding it back down.There may an uneven microtexture on the surface causing the leaks. Once I had a nose "O' ring, the one that sits behind the main barrel thread, leak despite me changing it as It seemed to leak on the barrel tube itself due to a slightly scuffed appearance there but with no visible scratches. I spun the barrel in the lathe, put light oil on the tube and polished the surface with fine grade (800 then 1200) emery paper. The "O" ring sealed perfectly afterwards as the barrel had a fine microtexture which I completely smoothed out rather than take a skimming cut with the lathe tool as the tool may not pick up on the tube evenly despite the centering action of a three jaw chuck.