Recognizing High Speed Steel???

older tools probably aren’t HSS, methinks.

-- I am always doing what I cannot do yet, in order to learn how to do it. - Pablo Picasso -- http://snbcreative.wordpress.com/

Check on a grinding wheel where you can observe the stream of sparks for about a foot.

High carbon steel will throw aa stream of sparks that will explode into more sparks several inches out. Similiar to a sparkler, or the branches of a tree.

High Speed Steel will throw a long stream of sparks that don’t branch.

Q

-- I don't make sawdust...I produce vast quantities of "Micro Mulch."

Q,

Thanks I knew there was something like this out there. Your tip rings a bell with me too. I think I may have seen that done on a video somewhere in my travels. Thanks a lot!

-- Check out my blog and podcast "The Renaissance Woodworker" at www.rogersfinewoodworking.com/blog