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Medical Composite Tools

Using standard drills to machine today’s highly abrasive composite materials can be costly in terms of tool wear and damage to workpieces. LMT Onsrud makes an extensive line of drills designed for today’s difficult-to-machine, space-age materials. LMT Onsrud manufactures solid carbide and PCD cutting tools designed specifically for machining CFRP (Carbon Fiber Reinforced Plastic), GRP (Glass Reinforced Plastic), Fiberglass, Phenolic, Kevlar®, Carbon Graphite and other composite materials.


LMT Onsrud designs and manufactures drills for your specific applications! Contact us for your application needs!





Solid Carbide Glass-Reinforced Plastic (GRP) Spirals (Coated)
54-200 Series


  • Optimized Geometry to shear the glass fibers
  • Creates “chip” to remove heat – prevents melting of material.
  • Coated to withstand the abrasive characteristics inherent to GRP.



Double Flute - Solid Carbide Straight

56-000P Series


  • Designed specifically to rout harder, more rigid plastics.
  • Foam, Fiberglass, Phenolic, Acrylic, Nylon, PVC, ABS
  • Acetal and Solid Surface.



Single Flute - Solid Carbide Upcut Spiral

63-000 Series


  • Upward chip removal.
  • Tool rigidity and long life.
  • High quality finish created.
  • Used in fiberglass and phenolic.



DFC Compression for Composites (Coated)

66-800 Series


  • Solid Carbide Compression Routers.
  • Diamond Film Coated (CVD).
  • Unique geometry prevents delamination on top and bottom edges of the composites.
  • Open flute design dissipates heat to prevent resin flow.



High Performance Composite Router (Coated)

66-900 Series


  • Designed for more efficient routing of composite materials.
  • Used in hand-fed and in CNC applications.
  • Coated for increased tool life.




Solid Carbide Fiberglass Router

Medium Burr w/End Mill Point & Drill Point

67-000 Series


  • Designed as fiberglass routers.
  • Upcut/Downcut diamond design.
  • Shears fibrous materials.
  • Medium Burr with End Mill Point.
  • Medium Burr with Drill Point.





Three Flute - Solid Carbide Phenolic Cutter Upcut & Downcut

67-200 Series


  • Upcut/Downward chip removal.
  • Adaptable to low or high spindle speed applications.
  • Viable in any CNC machining environment.
  • Free cutting action provides better finishes.
  • Significantly lower noise levels.
  • Downcut - increased part hold down.



Three Flute - PCD Progressive Chipbreaker for Composites Standard & Metric

67-220 Series


  • Standard and Metric dimensions.
  • Superior chip control and Increased tool lifecompared to solid carbide.
  • Cuts dense and abrasive materials.
  • PCD cutting edge supports wide range of feed rates and depth of cut combinations.
  • Chipbreaker incorporates a unique geometry.
  • Distinct Hi-Low asymmetrical chipbreaker profile reduces vibration and chatter
  • Reduced harmonic imbalance.
  • Improved surface finishes.
  • Reduced noise levels.




Solid Carbide Fiberglass Router
67-250 Series


  • Downcut chip removal.
  • Three Flutes Diamond Grit.
  • Designed as fiberglass routers.



Double Flute - Solid Carbide Compression Spiral

67-300 Series


  • Up/Down Compression Design.
  • Fast feed Rates.
  • Excellent finish on both sides of the material.
  • Best on composite panels and honeycomb core.



Solid Carbide Un-Ruffer PATENTED

67-400 Series


  • Unique compression burr design.
  • Cutting performance of a burr.
  • Achieve good surface finish.
  • Best used on composite panels.



Solid Carbide CG (Carbon Graphite) Tool

67-500 Series


  • Geometry increases amount of effective cutting flutes.
  • Superior performance over a standard burr.



Double Flute - PCD Tipped Tooling – PCD Full Face w / Plunge Point

68-000 Series


  • Best used in abrasive materials.
  • Achieves superior surface finish in material.
  • Increased tool life over solid carbide tooling.



Double Flute - PCD SERF™ Cutter - Standard & Metric 

68-200 Series


  • Standard and Metric dimensions.
  • Rougher and finishing tool in one.
  • Distinctive geometry reduces the cutting forces.
  • Increased tool life.
  • Higher feed rates.
  • Reduced noise.





Three Flute - PCD SERF™ Cutter - Standard & Metric 

68-300 Series


  • Standard and Metric dimensions.
  • Three-Flute tool: Two roughing edges and one finishing edge.
  • Geometry reduces cutting forces.
  • Shear fibers in high-strength composite and other fiber reinforced plastic materials.
  • Finishing edge cleans up after roughing cuts.
  • Creates a smooth edge on material.



Double Flute - PCD Ballnose Standard & Metric

68-400 Series


  • Standard and Metric dimensions.
  • Designed for use in abrasive materials.
  • Utilized when cut quality and tool life are crucial.







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