Design Principles

by Fred Van Sant General Considerations: First we should get out of the way those factors which do affect OP (optical performance) but are not inherent in the design itself. Mainly they have to do with the matching up of the design with your particular piece of rough and/or the changing of the sets of […]

Dopping with 5-Minute Epoxy

by Jonathan L. Rolfe I converted from waxes to five-minute epoxy for dopping a few years ago. The reasons I did were: I have wide temperature variations in my shop at times…(New England). Shellac-based “waxes” become extremely brittle at low temperatures…We know that upon chilling a dopped stone, a quick rap releases it instantly. In […]