We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Carbide O-flute router bit with straight flutes

Onsrud

Onsrud 56-618 O-Flute Routing End Mill 3/16 5/8 2 hand tool

SKU CH-MR53-TC5D7 MPN 56-618

Carbide O-flute router bit cuts hard and soft plastics with a 3/16 inch diameter

  • Product typeHole, Drill, Bore & Wire Gauges
  • Main materialCarbide
  • O-Flute design clears chips efficiently in plastics
  • Carbide construction resists wear during extended routing
  • 3/16 inch cutter diameter suits precision detailing
  • Straight flute geometry produces clean edges on hard and soft plastics
  • Onsrud brand recognised for industrial-grade routing performance

O-Flute Router Bit for Hard and Soft Plastic

The Onsrud 56-618 is a solid carbide O-flute router bit designed for machining hard and soft plastic materials. Its straight flute geometry promotes clean chip evacuation in plastic workpieces. This tool suits CNC operators and fabricators who need precise routing in plastic sheets.

Cutting Diameter and Length Define Reach

The cutter diameter is 3/16 in and the cutting length is 5/8 in, which set the practical limits for groove width and depth per pass. The two-flute design balances material removal rate with finish quality in plastic. Deeper slots require multiple passes to avoid tool deflection.

Carbide Construction Resists Wear in Abrasive

Solid carbide body provides hardness and heat resistance for extended tool life in abrasive plastic composites. The O-flute profile reduces chip welding and melting during high-speed routing. A Proposition 65 notice applies because the product contains a listed chemical.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $34.99
Pricier than about 63% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameOnsrud
Model name56-618
Product typeHole, Drill, Bore & Wire Gauges
Size & build
Main materialCarbide

Questions about this item

How do I choose between the 3/16 in and 5/8 in cutter diameters for this O-Flute bit?

The 3/16 in cutter diameter is the cutting size; 5/8 in refers to the cutting length. Select based on the required hole width and material depth for hard or soft plastics.

What does the O-Flute geometry do when routing plastic?

The straight O-Flute design efficiently evacuates chips from hard and soft plastics, reducing heat buildup and preventing melting or re-welding during the cut.

How does the solid carbide construction affect tool life and speed?

Solid carbide maintains sharpness longer than steel, allowing higher feed rates in plastic while resisting wear, though it requires a rigid setup to avoid chipping.

More in Utility & Specialty Hand Tools

Similar items