Whiteside UD4125 Up/Down Cut Spiral - 3/8″ CD x 1 1/4″ CL x 3/8″ Shank

$109.02 $128.25

SKU: UD4125 Whiteside Machine Company

Seulement 5 gauche!

Cutting Dia3/8″
Shank3/8″
Flutes2
CutCompression
TypeSpiral
Max RPM22,000

Materials: Natural woods, composites, hard plastics, thin aluminum

Recommended RPM: 16,000-18,000 (max 24,000)

Made from solid carbide, each bit contains an up cut and down cut flute. This flute design creates a compression cut that prevents fraying and splintering. Compression spirals will save you time and money on finishing your projects edges by reducing sanding time.

  • TOOL SPECS: Solid carbide, 1+1 compression spiral with 3/8" cutting diameter, 3/8" shank, 1-1/4" cutting length, and 3" overall length for use in routers with a 3/8" collet.
  • COMPRESSION SPIRAL: Features up cut and down cut edges for a chip-free finish on both the top and bottom of the cut, ensuring clean, precise results.
  • UP AND DOWN CUT: Designed with up cut and down cut edges, this tool performs like two separate bits, providing the many benefits of both styles in one tool.
  • CHIP REMOVAL: Ideal for chip removal in tight spaces, especially where standard compressions will not clear chips effectively.
  • MATERIAL: Perfect for plywood and laminate cuts where chipout is common. Also performs excellent in hardwoods and softwoods, providing clean, smooth cuts in various materials.
  • MACHINES: Perfect for routing grooves, dados, trim, or through cuts. Compatible with hand-held routers, router tables, and CNC routers for precision woodworking.

Availability: In stock at our supplier — typically ships in 3–7 business days. Contact us to confirm lead time on larger quantities.

Feeds & Speeds
Based on published chip-load charts. Full calculator →
Cut not coming out right? Melting, chipping, burning or tearout — the Cut Doctor reads your settings (or a photo of the edge) and gives you the cause, corrected numbers, and the bit that fixes it. Free, no signup.