R1.5mm PCD Turning Inserts CNC Lathe Diamond Tool For Brass Ceramic Stone Saw Machining

Palton R1.5 PCD Corner Radius End Mill — Sharp Corners, Long Runs

What's an R1.5 PCD End Mill For?

A 1.5 mm corner radius on a diamond-tipped end mill does two things well: it strengthens the cutting edge at its most vulnerable point, and it produces a controlled fillet at the shoulder — no sharp internal corner stress risers, no hand deburring required.

Tool DNA

Why R1.5 Matters in Production

A sharp 90° corner on an end mill is its weakest feature. Under load, that sharp intersection chips first. Once it goes, the entire cutting edge follows. By introducing a 1.5 mm radius, the stress distributes across a curved profile that handles impact and abrasive loading far better — without giving up the ability to cut a square shoulder.

Translation for the machinist: You still get a flat floor and a clean vertical wall. The corner just has a designed-in 1.5 mm fillet that makes the tool last longer and the part stronger.

Materials It Dominates

• Aluminum (all grades): 6061 billet, 7075 structural, A356 castings, ADC12 die-cast

• Copper alloys: Brass fittings, bronze bushings, copper electrodes
• Plastics: PEEK medical components, POM gear blanks, nylon structural parts
• Composites: CFRP panels, GFRP laminates, carbon-reinforced 3D-printed parts
• Graphite: EDM electrode milling, mold cavity roughing

Where Shops Deploy This Tool

Radius prevents corner fracturing of brittle graphite

The Three Numbers Shops Care About