bobfriedman
Member
Robert Cairns Company LLC <<WEB SITE>> is offering Schott glass in rings.. i purchased an 82mm RG1000 for $150.. he will also polish to the desired thickness (e.g. i purchased a 82mm UG-1 in 2mm thickness)
i am not affiliated but have been very pleased with the quality of his filters and rings..
more sources the better i would think.
i am not affiliated but have been very pleased with the quality of his filters and rings..
more sources the better i would think.
