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Iwas thinking today and it occured to me that since there are some quite experienced makers here, as well as some newer makers that a trivia challenge question would be a way to share some of that knowledge. Since knifemaking covers a braod area of skills, I would like some topic suggestions...

Dave, Its just too dang noisy in the shop without hearing protection. The hat and the wooly catapillar on my upper lip have kinda become my trademark. Del

James and Sean, I would be willing to assist, I have participated in several and would be willing to assist or even take the lead role if necessary. I would suggest leaving the theme as open as possible for this first one. You can both pm me or even call me if you like to discuss details...

Damascus will continue to rise in popularity, and knives with hamons will increase even more. Smelting your own steel to make your knives out of will be the hot new thing showcased in two years at blade. The abs old guard, in order to continue in power, will create a new catagory title...

Boss, Thats a good comment for a teenage boy to a busty teenage girl if he wants his face slapped,2thumbs but its two pics of the same knife. Nice knife Fred

Hand finishing with sandpaper is a good way to finish. 600 grit is where you can stop. Start at 220

Allen, No problem, Glad to have helped.

Allen, you actually can do this, but not with rockwell Rc. You can do it with a microhardness tester which allows you to test the hardness of just the carbides, but that is a whole different ball of fish

Allen, The reason for "the whole raft of characteristics" is that steel as we know it is comprised of carbides and the matrix, and the carbides behave in certaian ways and the matrix behave in certian ways and for the most part we measure these characteristics as a whole, and with such a...

Rockwell Rc scale hardness is determined by the depth of a diamond penetrator with a 150 kg load, the depth of the penetration gives a number indicated on the dial of the machine. The lower the number the deeper the penetration. Rockwell Rc gives what is refered to as macrohardness, which is an...

From this website http://steel.keytometals.com/Articles/Art140.htm Rockwell Hardness Test The most widely used hardness test is the Rockwell hardness test. Its general acceptance is due to its speed, freedom from personal error, ability to distinguish small hardness differences...

Me working :bud:

You can check out my site as well :D

Thats cool, I'm thinking about making some myself.

Where did you get the tamahagane?

Steve, Please just buy some quenching oil, the transmission oil will work, but good quenching oil will only be a bit more expensive. These are the major problems with transmission fluid. #1 it was not designed for quenching. #2 it has a very low flash point, and it burns very vigiorously...

Doug, Now you know why I wear black in the shop.

The 10xx series steels vary in Mn content from .4, .6, and .8. You will want to check and make sure you have a steel on the low end. The shallower hardening, or faster quenching the steel the more activity you will see in the hamon. Most of the elements used to alloy steel make the steel...

Doug, I believe the process Josh is trying to decribe is marquenching or martempering. Once you get below the pearlite nose you can interrupt the quenching process and let the blade cool more slowly. This allows time to straighten any warping that occured in the quench. I do a similar process...

No one can ask anything more.