Hi,
I would strongly recommend that you do the embedded tutorials in the Fusion Documentation and also some of the
Self-Paced Learning to help you to learn fusion faster and better. They can be found here:

It is also much easier for the forum to help you if you attach your file AND a screenshot of what you want to achieve
and what the problem is. You can create a file to export like this:

Time spent on the tutorials and self paced learning will not be wasted. Also check out the three RULES that are
pinned to the forum for further guidance.
This is a very simple project and I strongly recommend you hit the documentation for this. Everything you
need to create your ramp is in the mp4 - all you need to do is sketch it and run the Loft command.
Start with a simple frame and a curve. I used a 3 point Spline and fully defined it.

There are a number of ways to do the next part but I will create an Offset Plane and then
repeat what I just did with a different height frame and curve.

I have then Projected the parts of the sketches I need into other sketches and joined everything
up so I have two curve parts joined with lines that will be my ramp.
I now use the Loft command to join my shapes together and the joining lines as my Rails.


I can use the Shell command to hollow it all out if I want.

My Quick and Dirty ramp is a little different to the one you have in the mp4 but the
basic principle is the same. Take careful note that all of my Sketches are Fully
Constrained. This is another typical beginner trap that causes endless problems.
I also notice in the mp4 that there are some Move commands in the Timeline. I would
suggest that these are totally unnecessary. Many beginners do not know how or when
to use the Move command correctly and it should be avoided until you properly
understand why it exists.

I have attached my meagre effort for you to step through and see how it works.
READ the documentation. There are embedded tutorials within it and it is an excellent
way to learn fusion. The Self Paced Learning is also excellent.
Time spent doing this is NEVER wasted if you want to learn fusion.
Cheers
Andrew