rockfish
Titanium
- Joined
- Aug 27, 2006
- Location
- Munith, Michigan
OK....... I've used a dividing head probably 2 or 3 times in more than 20 years, so every time I learn something about them, I forget it all by the next time I need to use one. I remember a friend telling me that with a 1:40 ratio dividing head, he almost always used a 18 hole plate, because he said with that plate you could do most any hole pattern with it. He wrote down some examples of how he figured the math........ for example 60. He always divided by 9. So....... 9 goes into 60, 6 times, with 6 remaining, which he put into a fraction of 6/9, then he wrote that 9 went into 18 two times, then multiplied that 2 x 6 and come up with 12................. so 6 turns and 12 holes. If you can, at all understand what I just wrote, can you explain the math ??? He's converting the fraction somehow, I faintly remember learning something about this in school about 34 years ago, but never used it again and have completely forgotten most of it.
I have three holes that I need to index on a dividing head. The first hole is top dead center, then another hole at 50 degrees from the first, then another hole 90 degrees from the first.
I need to figure out how to index this part.
Frank
I have three holes that I need to index on a dividing head. The first hole is top dead center, then another hole at 50 degrees from the first, then another hole 90 degrees from the first.
I need to figure out how to index this part.
Frank