Spoon bits are used for drilling the tobacco chamber of the pipe they have a 1/2" shank and are available in 4 sizes.
• 11/16" - 17.5mm
• 3/4" - 19mm
• 13/16" - 20.6mm
• 7/8" - 22.2mm
All spoon bits are in a Parabolic Profile.
As the spoon bits are coated they do not require sharpening. Average spoon bits have a Rockwell hardness of 28-32 HRc where as these coated bits yield a hardness of 85-90 HRc. As such the wear properties of the coating far exceed the conditions produced through drilling briar.
The spoon bits design supports a positive chip breaker and relief of the lead edge as to produce a clean sharp cut.
• Lathe and Drill Press use.
• Free-hand Drilling.