How do I make a knurled double sine surface around a cylinder?
Create the sine waves on two sketches 90 degrees apart. In the Surface tools, use a sweep to complete the surface. Thicken when done.
p.s. Using control point splines will allow you to modify it at will.
ETFrench
On a flat surface I'd proceed with the method @etfrench has shown.
However, in a circular arrangement and particularly at different frequencies of the pattern I would not create this in Fusion 360 but in Blender making heavy use of the Array modifier.
The resulting quad-mesh can then be imported Into Fusion 360 and can then be converted into a T-Spline.
The above is a quad mesh exported from Blender as .obj and imported into Fusion 360. There is was converted into a T-Spline and then NURBS surface. While that sounds like quite a few steps, this can be modeled with T-Splines in Fusion 360 but is extremely tedious, non parametric work. Increasing the frequency and amplitude of the knurl will be a lot of tedious selection and scaling work.
In Blender modeling this including some experimentation did not take longer than 10 minutes.
Once set up/ modifying the frequency and amplitude of the knurl is fully parametric.
@chrisplyler wrote:
Maybe I misread his intent? I think he wants a bit larger pattern of waves on the cylinder, and then he wants a smaller knurl pattern on top of that.
Now that I've re-read the OP's post I believe you are correct. I've stopped halfway through.
Still IMHO Fusion 360is entirely the wrong software to do this. Even just with the software as shown above this is already quite complex geometry. When you add another finer layer of knurling on top of that you'l have to deal with 10th of thousands of faces in a single object and even more mature CAD systems choke on that.
Here is a very quick demo of how I created the model in the posted image.
I see that I forgot to record al the keyboard shortcuts I used but it should give you at least a basic understanding of how such things work in Blender.
You can see how incredibly little geometry I start out with, a quad face that I subdivide twice. The rest is patterning and a curve modifier to get this into the cylindrical shape.
If you pay attention to the upper bar in Blender you'll see that the quad mesh that I am exporting already has 3126 faces. If I'd add enough geometry to add a knurl that would easily increase the polygon count to 30k
In the end that knurling might not be within reach for Fusion 360.
Here's a circular double sine done all in Fusion 360 using the same technique as in my first post. The only hard part is determining the amplitude and drawing a circular pseudo sine wave.
You will need a robust computer or lots of patience 
ETFrench
In a nutshell the modifier stack in Blender works somewhat equivalent to the parametric timeline. One builds upon another. Just in this case for Mesh models.
There is a Mirror modifier that is self explanatory.
The Array modifier helps to create linear/rectangular and circular patterns.
The curve modifier allows you to deform a mesh along a curve.
I've labeled the ones I use most in he image below.
For this knurl I used 2 army modifiers (one in X and one in Y) and a Curve modifier.
Hi Mr JDFontento3,
Yes, it is possible... sort of. Theoretically, any well-behaving graphics engine should take on such challenges. However, the path for the required outcome might not be necessarily easy, and it will depend upon many imposed factors and exposed deficiencies. I understand that for one reason or another you want to torture F360 by knurling it! As per my own experience, I assure you that F360 will not submit easily. This opinion is somewhat supported by Mr TippyLighting (who when has heard it has had prudently escaped underarms of Blender or Mr ATFrench who has faced the resistance bravely and made the first step with some efforts. |:-)
Some time ago I have answered the post which seems to resonate with your challenge and it might answer some of your questions.
As I understand you would like to create double sin() knurl around a cylindrical shape controlling its many parameters like its diameter, bumps heights, r&h sin() periods, etc. possibly them being functions of knurl position.
I have to admit it is F360_WishOfTheYear.
Could you please, look at the following?
Is it something similar you are looking for? If yes, can you challenge yourself to describe the shape in the mathematical jargon?
f(x,y,z) =g(u,v,param1,....,paramN), D(u,v,param1,....,paramN)
(the parametric type function is the most appropriate method of the description for the occasion)
The precise and formal description of the manifold/surface function is the obligatory foundation for the following steps. You might ask yourself “Where can I find such a function?”
Well, the simple answer is in… funiverse which eclipses and controls universe you are the part of. So there is a chance that it could be hiding at the back of your head.
Whatever the result, and upon your willingness to share it, partake it in the challenge for next steps.
Addendums:
(anaglyph red/cyan glasses required, best effect while watching natively outside a browser for example in MediaPlayer, VML or similar.)
Regards
MichaelT
Unfortunately, the included file doesn't contain any information on how to reproduce the effect
ETFrench
@MichaelT_123 wrote:
... I know. The effect is created by a portion of the quite substantial chunk of code creating "I would call the extension of F360 functionality", It is quite a few tens of thousands of code lines, a significant portion of it based ( as Mr TrippyLighting suspected) on F360 API but not only.
Hmmm ... I remember many of your posts. It seems like you have a goal with this beyond just the intellectual challenge. Would you care to elaborate ?
What API are you using C++ or Python ?
Are you using any commonly available libraries to help in the pursuit or are you writing everything from scratch ?