Amana Tool 46316 Solid Carbide Spiral Plunge 1/4 Dia x 1-1/8 x 1/4 Inch Shank Up-Cut Tajima Festool has addressed this issue

Festool has addressed this issue by developing a unique pliable fleece filter bag

in one pass by this bit

Five different bearings are provided

Easy handling as a result of well-balanced center of gravity

Can be used with handheld and table-mounted portable routers

Amana Tool 46316 Solid Carbide Spiral Plunge 1/4 Dia x 1-1/8 x 1/4 Inch Shank Up-Cut Tajima Festool has addressed this issueSpiral flute bits combine a shearing action in cutting with an augering action in chip clearance. The shearing action yields an especially clean accurate cut while the augering action clears chips from the cut. The Up Cut shears from the bottom up pulling chips from the bottom up thus allowing deeper penetration with less stress on the tool. An excellent choice for mortising. Special unique carbide grade increased clearance geometry and razor sharp