Originally Posted byserpicojr

You mean triangle math and circle math? I do it all the time. I rarely use sin cosine tangent values, in formulas though. I admit that I use a cadd program that uses them all the time. However without a cadd program I would not use them.

Over the years while using the machinists handbook. I came across a lot of great formulas. But to be honest if I have to use sine cosine or tangent tables without remembering the tables, it is dangerous to use them because you are assuming that they are correct or that you entered it correctly.

You are working with numbers that are six or ten places out, to try and hold accuracy. By the time I put all these numbers into a calculator, right them down or play store and recall a few times. I can assure you I am not doing math.

Math is done and you are sure. Mathematicians practice, a lot and I never even attempt to beat them for coming up with ideas or solving problems because I know anyone can come up with a great way to solve a problem. Mathematicians usually come up with great ones.

But usually the mathematicians when they get to the job or site, stall out. Because they realize that the perfect mathematical world does not exist.

Often mathematicians cannot believe how hard it is to measure one piece of metal accurately. So all the calculations are usually better performed by older tried and true methods.

I drew this rail in about five minutes using cadd. I just installed it today. Cadd is an awesome way to do it.

If I had to lay it out on a table it would take about a half hour to do. I would have more work taking the pipe in and out of the bender as well.

However I could cut down laying it out on a table to about five minutes if I created some little gadgets to show the ratio of angle to length of pipe before it was bent. It would be rather easy to do. But you would lose the ease of designing and redesigning on the computer. You would be much more tired laying it out on the table many times then on the computer.

I have noticed that with the cadd drawings statistically my rails are 100 percent to the drawings, accurate.

I once made a rail that I forgot to draw in a step while drawing it up. It came out one step short of the first step. It was funny though that this never happened to me with the old system. But still all in all, the drawings make it happen faster, more accurately. We just need to implement computer design entry to speed it up and make it more accurate.

Without cadd I was running probably in the high nineties for accuracy.

Sincerely,

William McCormick