LMT Onsrud

LMT Onsrud manufactures its cutting tools in the USA, supplying solid carbide end mills and router bits for CNC routing and milling. This line is built around aerospace, composites, plastics, woodworking, and metalworking applications, where consistent geometry and tight tolerances matter as much as raw cutting speed.


For composite and wood-composite work, Onsrud's compression-style bits cut from both directions at once: the upward-spiraling lower flutes and downward-spiraling upper flutes press fibers inward from the top and bottom surfaces simultaneously, which is what keeps edges clean and chip-free on materials that would otherwise tear out under a standard up-cut or down-cut bit.


Because the tooling is engineered for high-speed production environments, it's a common choice in shops running long unattended cycles, where tool life and predictable wear matter as much as any single cut. It covers everyday routing and milling work just as well as specialty production runs.

Onsrud 52-550 Series Upcut Foam Cutters - CNC Router Store
Onsrud 52-550 Series Upcut Foam Cutters - CNC Router Store
Onsrud 52-550 Series Upcut Foam Cutters - specifications

LMT Onsrud 52-550 Series Upcut Foam Cutters

$140.21

SKU: 52-554 LMT Onsrud

LMT Onsrud 52-550 foam cutter. Designed with a 25° helix and upcut geometry, these solid carbide bits ensure ultra-fast chip expulsion and clean, deep cuts in thick foam. They are the go-to choice for packaging foams and 3D routing.

Key Features & Benefits
Upcut Geometry: Provides upward chip flow to keep the cutting path clear and prevent material clogging.
Solid Carbide Construction: Delivers superior durability and extends tool life, even during extended deep-cutting operations.
25° Helix Angle: Specially engineered to drastically reduce ribboning and achieve ultra-fast foam processing speeds.
Versatile Application: Ideal for dense, semi-rigid, and packaging foams requiring small diameters and deep cuts.
Product Specifications
Tool Series: 52-550
Material: Solid Carbide
Cut Type: Upcut
Flutes: 2 

Only 30 left!