calculus cross section

[Anonymous]

please help I would like to create 3 variations of an object

circular base with equilateral triangle cross sections

circular base with rectangular cross sections

circular base with semi circle cross sections

thank you

[etfrench]

What is it you need help with? Designing objects with multiple options is not a hard task. I'd recommend viewing the learning videos to get started.

[Anonymous]

thanks!

the most confusing for me is to create continuous plane shapes on the circular base

i don't know how to go about doing that considering I can't sketch on another axis until i extrude the sketch on the axis i'm currently working on, which poses a problem because i just need the base to be circular so that my cross sections will obey that constraint, i don't need a circular disk under my models if you get what i'm saying

i'm looking to create something similar to the attached file

[etfrench]

The Wolfram site is pretty interesting.  Thanks for exposing it.

This screencast shows how I would do this. 

To make this more parametric, use User parameters and dimensions to control the model.

[davebYYPCU]

After viewing the example link, are you needing the cross sections, (can do them, too) because CAD programs have advanced from the old paper project versions,

Lots of work there Ed, your loft needed work on the base rail.

File attached, let me know if I missed something....

[Anonymous]

I'm having trouble understanding how you were so quickly able to create those shapes

Did you spend time before you filmed the screencast to model them???

[davebYYPCU]

Yes,

the 5 or 6 sketches, didn't take much longer than the video, maybe a bit more time in the video would have helped, see below,

but you don't need teaching how to draw a triangle, point, ellipse or a few circles in the right places,

what you need is to see that the old days are gone, what Ed did with his loft, was done another way with 2 extrude commands in my video.

The semi-circle, - one revolve, probably too quick with that one in the video,

and the Loft for the Triangle set, probably should have built that one from the selection box, eh?

Load in my file, and take the timeline back, with each step, you will see what I have done, but with each step, Right Click to Edit the Feature, and

Fusion will show you what settings and selections are used for each step, and is how I taught myself the Fusion program, reading timelines.

Happy to answer questions....

[Anonymous]

how did you create an offset plane on the two dimensional circle sketch after the first step?

[Anonymous]

never mind! i have created the sketches i am just having trouble extruding...

thanks for all your help!!

[davebYYPCU]

Yup, second extrude method is almost unknown, a little tricky and hardly ever demonstrated,

For this model, The height of the first extrude has to be higher than the second extrude profile,

The second extrude is symmetric, wider than the first extrude, so that both extrudes are bigger than each other, the Operation set to Intersect - yellow preview,

The result is only what material is common to both profiles.

You'll get it....

[Anonymous]

i got it! it has a 50 mm circular base

is there any way i can enlarge the whole thing by 162.5%?

it would be ideal if i could learn how to create this design with an 80 mm circular base

is there a quick step/series of quick steps that will help me achieve this?

[Anonymous]

never mind again! there is a SCALE button!!! 🙂

[Anonymous]

absolute last question for this thread:

is there any way i can export these f3d files as stl's??? i don't see the option anywhere

[davebYYPCU]

Sure,

Three bodies, four ways to do it, a file for each body, or a file for the three in one,

Right click on each body in the browser, Save as STL is about half way down that menu.

Three in one, (unlikely) right click top browser entry, (filename) same menu item.

No limitys here, happy to help....