How do i achieve a crown from this flat pattern?

[Anonymous]

Hi

Is possible to make a crown out of the flat pattern i made in the file?

I tried all methods i knew but didn't get any good result. I learned, and still learning, Fusion by myself so i don't really know if it's even possible.

Thanks 

[mavigogun]

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@Anonymous wrote:

Is possible to make a crown out of the flat pattern i made in the file?

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The only "bending" capacity is within the Sheet Metal workspace, where some have exploited tools therein to wrap cylinders; I haven't seen other shapes conformed to.

I might create the gross base form by Sketching a Profile then Revolving to produce a solid Body to "carve" the shapes from, using a Sketch to Split the Face of that Revolved Body.    First, import the STL, Convert the Mesh to a BRep, Project the BRep to Sketch, use that mess of Points to create a new clean Sketch of the Profile, then Split Face the Revolved Body; move to the Patch Workspace to delete unwanted Faces, and Thicken to taste.    Here's  a pic of the stuff necessary to get that done, screencast forthcoming.

[Anonymous]

Hi mavigogun,

Thanks for the reply! But that wasn't really what i was looking for (i badly explained my point in the original question sorry).

What i need is the ends of the spikes  to touch each other like in the photo. 

It was easy to make them do so by sketching them flat, but how do i keep this  on a lampshade-like shape like the one you made in the screencast? I attached on this reply a f3D file of the pattern, i think this is the format that keeps the design history.

Thanks again for aswering 🙂

[daniel_lyall]

Do you want something like this?

 

If it is, this was a 5 min quick play so yes I realize it will need to be closed.

[Anonymous]

Hi Daniel,

Yes something like that, how did you do that? Is it possible to close the geometry?

Thanks for replying

[mavigogun]

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@Anonymous wrote:
What i need is the ends of the spikes  to touch each other like in the photo. It was easy to make them do so by sketching them flat, but how do i keep this  on a lampshade-like shape like the one you made in the screencast?

Sure, I got that. You've got a few choices, as I see it. The next step from what I've suggested is to position Sketches around the crown, working every odd spike first, Sketch, Split; when that is done, fill in the even spikes, starting by projecting the ends of the odd spikes into the adjacent even spike Sketch.

As mentioned previously, the Sheet Metal Workspace provides a capacity to wrap non-compound curves- I'll bet that's the method used by Daniel in post #5. That will produce a cylindrical crown. If you want a cone section or a flared crown, you might then be able to use the Edges of the cylindrical crown to Split the Face of the desired Body, or, easier still, Intersect the two Bodies. That last is probably the simplest workflow I can imagine.

I don't know how to perform the wrap in Sheet Metal- partly because some folks who do know like to show off the product while keeping the method to themselves.   Hopefully that won't be the case here.   If a knowledgeable party doesn't volunteer the info, I'll dig up what has been posted on the topic to date- if not explicit,  as I recall, there is enough to surmise the process.

[mavigogun · Accepted solution]

Check out post #10 from this thread for a wrap tutorial:  https://forums.autodesk.com/t5/fusion-360-design-validate/step-by-step-how-to-do-sheet-metal-wraps/m...

[mavigogun]

Thanks @PhilProcarioJrfor that most excellent wrapping demo- your time and effort were appreciated.

[daniel_lyall]

@mavigogun You only need to ask, but you found the one most people learned from not the videos that are done by the lies and cheats.

I protected the flat pattern onto the unfolded sheet metal cylinder extrude cut it out and refolded it, getting the correct length and position for the sheet metal part is a bit of trial and error.   

[mavigogun]

Oh, I appreciate your contribution- the critique wasn't aimed at you; sometimes there's only a moment to point in the right direction- and yours was most definitely the right direction.   Actually, you lit a fire under me to finally learn the process.   Much thanks!

[daniel_lyall]

Any time.

[Anonymous]

Thanks for the help,

Really learned a lot in this thread! 🙂

[mavigogun]

I finally got some results.