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Reply by Wildwood

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Posted on Is the titanium nitride coating on the sorby tools worth it?

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Wildwood

1245 posts in 887 days


#1 posted 01-30-2013 11:53 AM

I have TN coated forstner drill bits and sharpen with diamond file and my dremel tool with HF diamond coated bits for spurs. Have no way of knowing how many microns sharpening away but know removed TN coating where am sharpening.

TN coated tool all about thickness of the coating. How thick is the TN coating on these cutters and on your Axminster chisels?

People do use credit card diamond hones to touch up edge on their carbide cutters doubt they know how many microns of carbide removing.

Here are sharpening instructions from Turnmaster instruction sheet.
Hard, harder, hardest, sharp, sharper, sharpest
1. Tungsten Carbide
These three throwaway cutters don’t need sharpening. They make light work of removing waste material from resistant woods and give extended cutting edge life.
Sharpens to 0.7 – 1 microns. Hardness: 90 RC. Material: micro grade tungsten carbide

2. High Speed Steel (HSS)
These cutters give the woodturner a material that can be sharpened to an ultra sharp edge. This steel provides unmatched quality for the discerning woodturner keen on getting the greatest detail from their tools. Sharpens to 0.2 – 0.4 microns. Hardness : 62 RC. Material: M2 HSS

3. Titanium Nitride (TiN)
These cutters provide the same advantages as HSS but give added longevity before sharpening is required. Sharpens to 0.15 – 0.2 microns. Hardness of coating up to 85 RC. Material:Titanium nitride coated M2 HSS

Tungsten Carbide tips can be sharpened using diamond abrasives

-- Bill


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