Using Rectangular Patter Command for 110 lines+ Causing Crashing

[Anonymous]

Hi,

I'm trying to create a cross hatch pattern in Fusion that I'm having some trouble completing. I'm creating a grid in the sketch environment that I can then export as a DXF for 2D cutting.  I was wondering if one of you Fusion wizards could post a Screencast of how you would do it. I have watched a couple video from Lars C but have not quite seen what I'm looking for. I can get the lines going in one direction but when I try to do the same thing in the other direction it doesn't work and I also get it crashing a lot. I've posted an image of what I have with half of the lines done to you can see what I'm trying to do. 

Thanks in advance.

[phil_eichmiller · Accepted solution]

I doubt Fusion is crashing. This kind of thing just causes a longer compute cycle. Fusion will be unresponsive for events like that. 

• One of the things Fusion will try to compute in this case is a sketch profile. This is the light blue shaded area that fills closed sketch figures. This is the thing you extrude for 3D commands.
• If you don't need the profile, don't ask Fusion to compute it. All those little grid squares are being computed. Turn off Profile display via the sketch palette. I'm sure you'll find the performance improving.

PS: If this is the pattern you are trying to make: To make the grid lines in the other direction, edit the sketch, draw a line going the direction you want it to go, then pattern it x110.

Thanks,

[jeff_strater · Accepted solution]

Fusion is going to struggle with that many lines in a sketch pattern.  When you say Fusion is crashing, do you see a crash report?  Or are you force quitting?  My guess is the latter.  I suspect if you just let it run long enough, it will succeed, but it will take a VERY long time, and will be impossible to work with afterwards.  This kind of patterning is not recommended in Fusion sketch.  In general, we recommend patterning faces or features of a solid rather than in a sketch.  If you are really just creating 2D geometry to export to DXF and are not planning to create a solid, Fusion may not be the tool for you.  You could make an artificial solid, pattern those lines in the solid, sketch on the top face and export that as a DXF, but that workflow is not great, either.

[Anonymous]

Hi Phil,

Yes, to be accurate I misspoke to say that Fusion crashed. Rather, as Jeff stated and you mentioned I was waiting for a long period of time and then getting a "program is unresponsive" warning and then quitting. In this case, I don't need it to calculate a profile as I'm just trying to create a 2D toolpath so I will uncheck that option and try it again. Thanks for your help on this.

[etfrench]

You can use a pattern in 2d toolpaths instead of in the sketch.