@SirEngineer wrote:
Hello! thats fantasic - just what I wanted. A few days ago I redrew it doing what you had suggested, I started with a cube and cut away 4 sides, then another 4 sides (the shoulders) at the 45 degree angles. Wasn't without issues, rotating the extruded sketch 45 caused a headache and has distorted that sketch for alterations, although it worked. I think perhaps there would be a better way to rotate the cut body by 45?
Anyway, result was much better - but not perfect. I will review your approach with the extrusion of the surfaces etc, thats not something I was familiar with. So I'm nearly there. Now struggling with extruding / projecting the manufacturer's logo on to the body etc. Fusion won't let me do it, not quite sure why, I have the logo drawn but won't cut from the body
Regarding rotating the sketch:
If I understand what you mean; you created a sketch, used it to make a cut, and then moved it to make another cut? If this is what you did then yeah, that's not a preferred way to make multiple cuts. Moving sketches in general is problematic and it's usually recommended to not do that. It's almost always better to use a pattern feature or even to just make another sketch. And generalizing a bit further even; I try to keep sketches as absolutely simple as possible and do everything with features instead. This is because sketches are by their nature more difficult to edit, and any edits are more likely to have unintended side effects since sketches are at the root of the shape creation tree so to speak.
About cutting with surfaces:
This is probably a more advanced (and obscure) technique. Most people would probably just add some extra lines (in the sketch that forms the surface) to make a closed box and then just extrude cut the box to remove the required solid. The problem with sketching a box is that you have to make sure the box is big enough to enclose all of the solid you want to cut, which could be a problem if future changes alter the shape that is being cut off. It really goes back to keeping sketches as dead simple as possible, to avoid having to mess with them in the future.
I also tend to start modelling with solids and then start using surfaces when the shapes get more complex, since surfaces give you more control over shape creation.
Not sure what's going on with the logo. Would have to look at exactly what you're doing.
C|
