Jean, I’m trying to follow your instructions but dummy me is confused.
I’ve installed the Engineering ToolBox Extension, went to the Trig Functions, entered what I think are the correct values, see the following.
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“The curve type (sine or cosine)”, I selected sin
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“The curve amplitude (how much the curves goes from maximum to axis). For example, a 1 inch amplitude creates a curve that goes from -1 to +1 for a total of 2 inches in variation from min. to max.” for this curve I wanted an amplitude of 3/4" thus I entered .75
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“The period length. For example 12 if you want one complete cycle to be 12 inches.” I wanted the length for this curve to be 8" thus for the “length of wave (x-value)” I entered 8.
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'The x length (how long will be the curve). Use a multiple of the period if you want an integer number of periods to fit in the curve length. A 96 inches (8 feet) long board will allow 8 periods of 12 inches (1 feet). Or make sure that the period length divides exactly the curve length. A 96 board can accommodate 10 periods of 9.6 inches, etc." I know what you are saying but I don’t see the “x length” but I do see “x end” I assumed this to be the number of times I want the wave to repeat. Is your “x length” the “x end” that I see?
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“The x difference or delta x. Don’t specify to small to avoid waiting a while for the curve to draw but use a significant number to get a nice result. Using 0.5 inch gives very good result with a length of 96 inches.” I have no idea what the heck this is but based on your suggestion I entered .5.
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“The required unit. I used inch in my example but all SU units are available.” I also selected inch.
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In the toolbox function I used there is also an offset, I just left this at 0, 0, 0
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I then click on “Insert!” and nothing seems to happen, e.g. I do not see a sine wave in my model.