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Whiteside UD4102M
Up Down Cut (2+2 Compression)

up down cut router bits; 3/8


shank 9.525 mm (3/8")
D(mm) 9.53
c/l(mm) 25.4
o/a(mm) 63.5
special use mortise style
features 6.35mm up cut
material solid carbide
flute 2+2
Item Price Ex. VAT £ 43.84
Item Price Inc. VAT £ 52.61
Stock Level 11

UD4102M ('M' = mortise style):

  • the tool is designed with shorter up-cut end flutes
  • applying a down shear action to the top surface during shallow cuts
  • great for dado cutting
  • shorter up cut is preferred on slot or mortise cutting; whilst the important upward feed of chip is still maintained; the top surface being cut is engaged by the downward shear from the down cut spiral


Whiteside Machine Company; North Carolina, USA

Maximum R.P.M. Guidance:

Cutting Diameter (D) Max. R.P.M.
up to 19mm 24,000
19 to 38mm 18,000
38 to 57mm 16,000
57 to 89mm 12,000


  • The dust generated from the grinding of tungsten carbide may contain potentially hazardous ingredients. Please ensure you wear the appropriate personal protective equipment. Inhalation, ingestion, eye contact and skin contact should be avoided.