01-03-2023, 05:57 AM
I second LR1955. the carbide sight soot blackening is the most non reflective deepest black that I know of. I still have my little carbide burner from back when my eyes were young and I was giving hi-power a go. and the burner is a PITA as far as keeping it working. I haven't looked lately, but I suspect finding a source of carbide is nigh impossible with all the do gooders running amuck.
-tdbru
-tdbru