Reply To: Sharpening Welcome! / Forums / General Woodworking Discussions / Sharpening / Reply To: Sharpening Rob Young 16 November 2012 at 2:31 am #3290 @johnkilleen – the green chromium oxide crayon is available from several sources in North America including Lee Valley, Woodcraft , even through the Amazon.com marketplaces. Expect it to be between $8 and $12US. Settings