That's one way you do it.
Another would be to sketch rectangles on perpendicular planes and loft them together, using the loft tangency handles to make it more "circular".
The handles are those red lines at the center. Drag the dots on the ends to "stiffen" the tangency setting.
After that, just mirror twice.
Of course, your example has an uneven number of waves, so you couldn't use perpendicular planes, you'd have to use an angled plane, and then you could set it up for as many as you want, using a combination of patterns and mirrors.
Here's a technique I can't quite make work in Solid Edge. Maybe one of you could fill in the blank for me here/ You could use a ghost drive curve - the outer circumference of the loft is driven by a planar circle that doesn't affect the height. This makes the finished part more circular, and you wouldn't need to control it with the tangency handles.
There are supposed to be vertical construction lines on the right rectangle just like on the left, but they are too short to show up. The problem with this is that because the section doesn't technically touch the guide curves, the guide curves aren't valid. This is a great technique, but I can't get it to work in Solid Edge. Any ideas?
What I love about Solid Edge, many different tools available to get a similar solution......here's another way to tackle it.....
Some sketches & guide surfaces...[you could use a rotated plane at 45⁰ , or whatever, to be your initial quadrant....]
Mirror body twice...[fill in the center as required]
hi matt, hi sean
thanks for the explanations and for the file so i can see how it was built in SE
what i'm in need to is some tutorials in sheet metal
so is there a way to have more than what i already found in youtube
i'm very gratefull,
No worries.......as to tutorials, not sure what you have seen, and what your CAD experience is already?, nor what sort of products you want to design?, to support what manufacturing process?....etc.
That info might help pointing you to something of benefit. [any video by @Imics will be good - in Hungarian - but good!] > https://www.youtube.com/channel/UCEmep5pW2Nsu0h3YP
Remember, sheet metal design in Solid Edge [well, most solid modelling software] is based on straight brake & roll forming.....all else, such as your example, should not be considered as a "normal" sheet metal part, hence there are some cross-over environment [Switch to Part - & back] tools that need to be employed.
While Synchronous is a huge benefit, "some" features are currently still best created using Ordered mode, and depending on the parts you want to create, may mean staying in ordered.
This white paper might offer some support also.....
I know, I was late for "party", but hope this is useful:
Everybody gives cool solutions, this is on other one.