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Reply by PurpLev

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Posted on Jointer knives - types of steel and which ones are better?

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PurpLev

8476 posts in 2249 days


#1 posted 604 days ago

to answer the original post/question:

tool steel: high carbon steel – usually O1 or A2 when referring to woodworking iron, best used for hand tools, does not stand up to heat (power tool usage) as well as HSS and carbide

HSS: High Speed Steel – cutting steel that can withstand high heat generated from high speeds of tools (drill bits, planer knives, blades, etc), better fit for power tools than tool-steel

M2 / T1 /etc: these are variations of HSS with added alloys in the steel mix to make them resist and stand up to heat even better than ‘pure’ HSS. these are usually a better choice over regular HSS for power tools that run high RPMs

Carbide: the toughest matel currently known. withstand much higher heat than HSS, and doesn’t degrade as fast as HSS. best used when longevity is required (high production settings). doesn’t take as keen of an edge as HSS can, so finishing cuts using Carbide are not as good as it would be with HSS cuts. usually used for rough work. can take deeper cuts and faster RPMs than HSS.

-- ㊍ When in doubt - There is no doubt - Go the safer route.


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