Problem with overlapping lines in SVG for inlays

[sjj530]

I've imported a fairly simple SVG file I'd like to use for an inlay.   As you can see, three of the shapes overlap - the moon, the small sail, and the large sail.   I'd like to create a pocket, and insert, individually for each shape.  That is, cut a pocket for the moon, mill an insert, glue the insert into the pocket.  Next, cut a pocket for the small sail in both the base and the moon insert, mill the small sail insert, and insert that into the pocket.  Repeat for the large sail. 

To do that I have to be able to isolate each of the overlapping shapes.   Create a pocket in a blank for the recess, and create a separate extruded Component for the insert. 

I can't even get to first base.  The SVG drawing appears to have gaps, although I can't find them even at extreme magnification.   The whole figure is broken into multiple line segments.  I can't select the moon, for example, and extrude it into a new Component, without simultaneously selecting the edges of the sail.  

Either I'm missing something obvious, or maybe what I want to do isn't possible in Fusion?

Any suggestions would be appreciated.  Thanks!

[jeff_strater]

I've seen similar things in the past with SVG.  Some systems seem to generate duplicate curves in some scenarios.  Fortunately, in this case, there really are no gaps, and the duplicates are separate chains.  Double click on a curve to select a chain, and then delete that chain, resulting in a single chain for the sails and the hull.  The moon appears to have only one curve.

[jhackney1972]

This sketch seems to have selectable profiles, without issue.  Take a look at the Screencast.

[mango.freund]

there is a simple trick. you draw a line across the svg. the faultless side will show you blue profile. you subdivide the other side again --- that as long as you have isolated the error ..
don't have sketchchecker installed in the check menu? this is a free app in the fusion 360 appstore. white dots can be seen. often on very sharp corners. also double lines lying on top of each other draw svg files from best regards mango

[HughesTooling]

@sjj530  Are you creating the SVGs yourself? Someone else had this problem and I think it had something to do with having a "fill" set for the shapes in illustrator.

Mark

[sjj530]

I did create the shapes, but in Inkscape, not Illustrator.   I made the shapes 0 pixels wide in the hopes of avoiding any problems with line width.  But it looks like that approach did not help. 

[jeff_strater]

it is pretty easy to fix up in Fusion - take a look at my post above.  It's hard to say what Inkscape might be doing, either in its own curves, or on SVG input.  It could be Fusion SVG import, but, other times, we've found the duplicates in the SVG itself.

[sjj530]

Thanks for the response!   I see how you got rid of the double lines.  I'm sure that's part of the problem.    However, since the individual shapes still didn't turn blue, I think the line segments are still not connected.     When I magnify the point between the line segments to the max possible, I'm not seeing a gap, but I think a gap must still be there, nonetheless.  

I guess Fusion 360 doesn't have a "Join" function. 

I can extrude - cut - a recess, say for the moon, but when I  try to set up a pocket operation, I get an error:

[HughesTooling]

For once the error message is pretty good. You've made a change to the design that means the setup has lost its references. 

Screencast shows you just need to reselect the body and axis references.

Mark

[jeff_strater · Accepted solution]

@sjj530 - it does not matter whether the curves are a single curve or not.  What matters is just that the define closed regions, and both my version and yours do define closed regions.  The first design in the screencast is your "test" design, and the second is my version of your original, with the duplicate curves removed.  Please mark this as a solution if you agree that your issue has been solved.

[sjj530]

Thanks to everyone who responded!   I think both jeff.strater and HughesTooling described the correct solution.  Thanks!😁