The MICROJIG GR-100 is a GR-100 single GRR-RIPPER 3D adjustable pushblock — entry-point pushblock with adjustable GripCenter Leg for table saws, router tables, band saws, jointers. The patented GripCenter Leg pins the work piece while keeping the operator’s hand clear of the blade — the design that defined the modern table-saw pushblock category.
Right tool for table saws, router tables, band saws, and jointers. Woodworking schools, makerspaces, and serious home shops use GRR-RIPPER as their default pushblock for thin-strip ripping, narrow stock, and any cut where fingers would otherwise come close to the blade.
MICROJIG is based in Winter Park, Florida and manufactures the GRR-RIPPER family of 3D pushblocks plus woodworking safety accessories. The patented GripCenter Leg keeps the work piece pinned through the cut while the operator’s hand stays clear of the blade — the safety design that defined the modern table-saw pushblock. Every GRR-RIPPER is molded and assembled in the USA.






