Check the listing for details. Wolverine Vari-Grind Attachment. Color: Black, Condition: New. Listed at 76.98 USD. NEW, Wolverine Vari-Grind Attachment, 125677, Save Time, Money and Frustration, Use with the Wolverine Jig or any other V arm Jig., Create Sharp Fingernail Profiles, Combines the Roll and Swing Motion, When turning coves, beads and other fine details, nothing beats a sharp fingernail profiled spindle gouge. For rapid internal hollowing or fast smooth external cuts on a bowl, nothing beats a side grind. However, because of the difficulty in producing these edges (both require rolling the tool edge and “swinging” the handle at the same time) most turners have never really enjoyed the benefits of a well ground gouge. Grinding difficult fingernail profiles on shallow spindle gouges and side grinds (also called Irish or long grinds) on deep fluted bowl gouges is quick and easy when.