Radius tool grinding | Model Engineer. 11/07/2016· Rod, In MEW 127 Jim Whetren describes a radius grinding attachment for the Worden, that may give you some ideas Tim Stevens: 06/11/2016 17:14:43: 1623 forum posts: I think you do it freehand, after some practice Just hold a loupe* in one eye, a radius gauge in one hand, and steady as she goes After a …