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- Jul 13, 2009
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The BladeForums.com 2024 Traditional Knife is ready to order! See this thread for details:
https://www.bladeforums.com/threads/bladeforums-2024-traditional-knife.2003187/
Price is $300 $250 ea (shipped within CONUS). If you live outside the US, I will contact you after your order for extra shipping charges.
Order here: https://www.bladeforums.com/help/2024-traditional/ - Order as many as you like, we have plenty.
Probably the best method would be to just do the math.
Tan=Opposite/adjacent
So the "opposite" is the height from the middle of your blade to be to the bottom of your file.
The adjacent is the distance from your blade edge to the upright holding your file.
Devide the two, then take the inverse tangent of that number and it will give you the angle.
How about just filing some scrap that is the same width as your blade and develop a "feel" for the angle.
I've got nothing to contribute towards your question..... But...... Man! What a great way for you to spend time with your son! It would be really cool to show us some pics of the process! Just like fishing, hunting, and the camp fire. That it's easier to talk with dad about akward "son" stuff. Learning to make knives seams perfect. Just my .2 cents my friend!
So the "opposite" side of the triangle is the one that is farthest away from the angle you are trying to calculate.
In your picture it'll be the length from the red line to the bottom of the ring that your bar that is attached to the file passes through.
Now all of the math stuff is just finding the angle that your jig is set up to file. It has no real reflection on how your knife will function.
Olymon has a point. Just getting on it and filing is a good way to get a handle on things.
Watch Aaron Gough's (I think I'm spelling that right, sorry if I'm not Aaron!!) videos about how to use a filing jig. They are pretty dang good and will help a lot!!
If your work surface is level, you can use an angle cube. They can be found in digital or analog.
I know you said you weren't looking to buy anything else, but keep in mind they are often available for a fairly small pittance.
I assume you are in Oklahoma somewhere. Whereabouts? I'm in Edmond and could possibly help you out with your heat treatment. I'm not set up for cryo, but I have most everything else.