Description
M.A. Ford 4.3mm Diameter Metric Fiberglass Router – Bur End — BOLTON SKU 62857.
About the M.A. Ford 4.3mm Diameter Metric Fiberglass Router
This 4.3 mm cutting-diameter tool is the second-largest cutter in this group of M.A. Ford metric fiberglass routers — solid carbide, burr-toothed tools for abrasive glass-fibre composites whose bur end allows the cutter to plunge as well as profile. The 4.3 mm diameter provides clearance-fit routing around nominal 4 mm hardware and a substantially higher material-removal capability than the 2–3 mm detail sizes, while remaining small enough for hand-guided work in rotary tools and compact spindles. Its heavier carbide core resists the bending loads of deeper, faster feed routing, so it can be pushed through thick chopped-strand and woven laminates at rates that would deflect or snap the finer cutters, while the burr flute geometry continues to shear fibres cleanly at the cut edge.
Key specifications
| Cutting diameter | 4.3 mm |
|---|---|
| End style | Bur end (plunge-capable) |
| Material | Solid carbide |
| Tool type | Fiberglass router, metric series |
Typical applications
The 4.3 mm size is applied to clearance apertures for 4 mm fasteners, mid-size cutouts and faster slotting in GRP structures. It is a common step-up choice when the 3 mm-class cutters prove too slow or too fragile for the laminate thickness on hand.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).

























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