I have been using Japlac on my Cooke Troughton and Simms microscopes but I have found it to have too high a sheen. No matter how much I polish the original paint work I cannot get it to a high sheen like the Japlac has. Where I have filled in cracks or chips the new paint is very obvious. I tried using emery paper to take the sheen down but then it looks too rough.
I have decided I need to abandon the Japlac. I have bought two hammerite paints: satin finish and smooth finish.
The amount of gloss a paint has can be expressed as a percentage of the light which is reflected back at an angle of 85 degrees. As no manufacturers bother to disclose this helpful information on the tin I have no option except to assess the two paints using an old fashioned method: eyesight.
I’ve painted the back of an old envelope and a dog food can to see what it looks like. As far as I can tell so far by eye, smooth means gloss finish (80% or more reflectance) and the satin is a lower sheen. Maybe 50% ?
It’s hard to guess how much light is being reflected but I think the satin paint will work out well.
Happy 2014 earthlings, I hope it’s a good one. May your microscope stands be shiny and your objectives clean and clear.