Thanks Rick! We've added your Corner Locating Method for a Mill to our
Measuring and Marking category, as well as to your builder page: Rick's Homemade Tools. Your receipt:
I suspect that I suffered in the same manner, always having a hard time in math class concentrating on what was being taught. Part of that was sitting next to with e window (it was always more interesting outside) and part due to abstract ideas with no relation associated with the real world. In a nut shell you combine a bad student with difficulty linking the abstract to the real and you have problems.
Recently I wanted to plot some holes on an archimedes spiral and spent some time relearning (or maybe learning stuff I never really got) a bit of math. What a reward though to actually get results you want after many false starts. While I've yet to apply this to the project I have in the shop, I did the math via a programming language Called Python and plotted the results immediately. I really think that, that plotting helped immensely with understanding the math and getting the right result. The visuals are very important in grasping some of this strange math.
That's probably why, after arithmetic, geometry is the oldest form of mathematics. It deals with relationships between objects that can be drawn and seen.
Unfortunately, when one gets a bit farther along in math, drawing a picture becomes very difficult. Consider the fact that many infinite series (sum of an infinite number of terms) have finite sums. How do you draw a picture to visualize that?
In order for it to work the angle to be measured must contact the edges of BOTH slots. A sufficiently obtuse angle will not do that, so I can't see it working on "every angle value". Also, very acute angles will penetrate too far and not contact both slot edges.
Sorry for my too shorter explanation, it goes on all angles but you need to have multiple widhts, it's not a single universal tool, but each time you need one and make it you can use it on different angles, and often i open more until it's no more usable.
It is not an universal tool as described on the original post, just another way in the same manner to simplify the job.
I try to make a short video for a better explanation.
Last edited by Okapi; 08-22-2017 at 04:40 PM. Reason: addition of informations
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