Parametric Stop Block for Chisel Sharpening Jig

A parametric module for creating stop blocks/keys for the Robert Larson chisel and plane iron sharpening jig:

* http://smile.amazon.com/Robert-Larson-800-1800-Honing-Guide/dp/B000CFNCKS/ref=sr_1_1

This OpenSCAD library is part of the [dotscad](https://github.com/dotscad/dotscad) project, an open collection of modules and Things for 3d printing. Please check there for the latest versions of this and other related files.