- Straight razor magazine: Interview with Günter + Thomas Kronenberg, CEO at Revisor GmbH Solingen.
- Makers of razors, pocket knives and accessoires: Makers of razors, pocket knives, and accessories:
An interesting list of razor makers and other blade makers
- How we at Revisor actually make razors:
- 7/8 straight razors in production:
- Hollow grinding of 8/8 straight razors: