Y’know that brings up an interesting point, maybe I can drag it back into the Kozo category.RET wrote:Hi Ian,
Thunderskunk is right. When you are designing machine tools, you design to minimize deflection, not for strength. That is why machine tools have heavy castings, etc. Cast iron is also used a lot because it won't gall and seize at all, it "self lubricates" because of graphite in the grain structure. While FRP materials are strong, they deflect a lot which is the last thing you want in a machine tool. Even if you used a lot of it, the resin "gives" way too much. You need materials that have a high Young's Modulus (stress vs. strain). For steel or cast iron that is 30,000,000.
All of this is why I used the materials I did. At the moment I have to decide if the CNC thread should be in the CNC section or here. It could be here because it won't be that long. We'll see.
Richard Trounce.
Kozo’s books are so popular because they are complete instructionals: follow every step and you’ve learned how to machine while also producing an engine. They use common home shop tools to the point you could almost do it without a mill.
What about a CNC style Kozo book? What should that look like? Should the CAD models be offered with the book?
It’s impossibly difficult since you can’t write a book about everybody’s use case; inventor, solidworks, F360, mastercam, featurecam, camworks, HSM, etc. As long as you have a good post processor I wouldn’t be worried about different mills and lathes, but that’s a concern too. More and more people have CNC capabilities at home. I think a project book like that would get some traction.
Not me though. My handwriting sucks.