AG028 Half set of 9 Russell Jennings Fine Thread Augers

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AG028 Half set of 9 Russell Jennings Fine Thread Augers

1/4 to 1/2" by sixteenths, then up to 1" by eighths, nine bits in total.

These are what all the others are trying to copy, the original crucible cast steel Russell Jennings augers.

All these bits are in very good condition with fine crisp lead screws, polished flutes, long spurs and cutters, a couple of spots of very light pitting on the lower part of the flutes but nothing that will remotely affect performance.

In 1855 Russell Jennings patented his double twist bit with cutting spurs. Widely regarded as the best bits for use in hardwoods, the fine thread version soon became popular with furniture makers and remains so to this day.

The double twist rests evenly on opposite sides of the hole, so the bit naturally wants to stay straight. The cutting lips release a circle of timber just ahead of the main cutting edge so that the main edges can plane out the waste with ease.

As with all self feeding augers, the best way to get a clean exit hole is to clamp a block of scrap on the exit side so that the surrounding timber is backed up and the lead screw still has something to bite into. 
You don’t need an auger bit file for Irwin or Jennings augers, any thin smooth file with a safe edge will work. I use a Bahco 5” warding file with the edge teeth ground off, which gets to all the edges of all the sizes and leaves a nice smooth surface.

1/4 to 1” by sixteenths

Supplied in a new British made 18 pocket canvas auger roll.

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