Jasper Precision Tools J601 Upcut Spiral Router Bit — 1/4" Shank | Solid Carbide | Clean Bottom Edge & Chip Clearing | Workhorse Bit for Circle Guides, CNC & Handheld Routers

Jasper Precision Tools J601 Upcut Spiral Router Bit — 1/4" Shank | Solid Carbide | Clean Bottom Edge & Chip Clearing | Workhorse Bit for Circle Guides, CNC & Handheld Routers

• ⭐ UPCUT SPIRAL GEOMETRY — CLEAN BOTTOM EDGE, EFFICIENT CHIP CLEARING — The J601 delivers everyday precision for the full range of woodworking and circle cutting applications. Upcut spiral geometry lifts chips upward and out of the cut — producing a clean bottom edge, flat-bottom grooves, and efficient chip evacuation in solid wood, plywood, MDF, laminates, and hardwoods. The reliable workhorse of the Jasper Precision Circle System. Created by aerospace-era engineer Les Jasper, who demanded obsessive accuracy. Not mass-market compromise.
• ? MANUFACTURER-RECOMMENDED FOR JASPER CIRCLE GUIDES — The J601 is the manufacturer-recommended everyday cutting bit for the complete Jasper circle guide family: Models 200, 240, 280, 290, 300, and 390. Precision upcut performance for speaker cutouts, inlays, furniture components, cabinet parts, and every circle cutting application where bottom-edge quality and chip clearing matter. The workhorse bit that belongs in every Jasper system.
• ? SOLID CARBIDE — PRECISION GROUND — Manufactured from solid carbide and precision-ground for balance at high RPMs. Delivers consistent upcut performance at CNC and handheld router feed rates. Long tool life, heat resistance, and repeatable accuracy across extended use. 1/4" shank, 1/4" cutting diameter, 1" cutting length, 2-1/2" overall length, 2 flutes.
• ? THE WORKHORSE TIER — OR UPGRADE TO THE 603TT — The J601 is the everyday workhorse: solid carbide, clean bottom edge, efficient chip clearing — the reliable choice for everyday shop use, general woodworking, and standard circle cutting. For finish-critical applications where both faces of the workpiece are visible, upgrade to the Jasper 603TT Compression Bit (sold separately) — AP nano coating, compression geometry, clean top AND bottom in a single pass.
• ⚙️ COMPATIBLE WITH ALL 1/4" COLLET ROUTERS & CNC MACHINES — Works with all handheld routers and CNC machines using a standard 1/4" collet. Ideal for grooves, dados, slots, mortises, pockets, joinery, and precision circle cutting with Jasper circle guides. For finished surfaces where even a pivot hole is unacceptable, add the Jasper M350 Blemish-Free Pivot Plate (sold separately).