I needed a quick jig to set the angles for sharpening woodturning chisels. These are configured for an 200mm (8-inch) wheel grinder. 

I have subsequently uploaded a version for a 150mm (6-inch) grinder. Please be aware that I have not printed or tested this size, though the actual print settings are the same as for the original sized models. 

Please make sure that you check that you are downloading the correct size for your bench grinder.