Sketch move with face

[Anonymous]

I appologise if this is already covered.

Regarding sketch creation and then maintenance.

I have to say that the SNAP feature failes so often to snap to relivant parts of the structure that it baffles me.

Edges of the face for instance seem to be ignored, which often results in tiny slivers of material not being extruded or cut when the sketch is used to cut or add material.

It fails to locate halfway point between two parallel lines, or the centre of a square.

If I want to place a circle in the centre of a square, I seem to have to put a cross from corner to corner and the then the circle can be made from the cross hairs, but then I have the tedious task of snipping all the unwanted segments.

And the most confusing aspect of sketches for me is when I extrude a surface that has a sketch on it, the sketch does not move with that surface. Now Im sure there are plenty of situations where you dont want it to, but I personally would like my sketches to optionally follow the surface they were originally made on.

I have also found the parametric system to be more of a hinderance for me, at least at my current skill level.

Im sure everyone has come to love it, except me.

Extrude to same height as adjacent surface...

And last but not least, for now, I often end up with lines on the bodies as a result of extruding surfaces and as hard as I try I often cannot remove an impercievable difference in height of 2 adjacent surfaces.

An example could be if you were to model a say something like a Rubix cibe where all of the surfaces on 1 side of the cube should be the same height, but for some reason Fusion decides that it detects 1 square is ever so slightly higher or lower than the others, And no amount of extruding and selecting adjacent surfaces will get them all to the same height, even though the measure feature says they are, the line seperating the squares just wont go away and appear as one flat surface on the cube.

That just might be the worst example ever, but maybe someone gets it.

Oh, and a feature that would be nice is a "pour", as in pour material into a crevice or hole to fill it.

Think of it like Spak Filler, or water where you want to fill in a crater.

For example; you might have been digging into a surface with complex ExtrudeCuts or a Revolve and you have a very complex hole in an otherwise nice flat surface that you now need to get rid of.

Delete could help, but it can get tangled up wth surfaces it cant deal with and then youre stuck.

Simple solution... Pour material with either a plane that defines the direction of gravity and enter a quantity of material till it fills the hole, or pour to an existing surface and stop.

How cool would that be?

You could even use it to test moulds and make bodies from a mould. Or test fluid travel or test for pressure vessel leaks. Possibly?

Regards

Andrew Cruickshank

[davebYYPCU]

The majority of your statement - works for me. 

I don't understand some things, the extrude face - sketch goes too,

that would depend on some proper setup, and I can do it in some circumstances.

Pour?  Pretty sure Boundary fill is doing that - water level being a parametric work plane.

A screencast demo of your problems, then we can teach how Fusion does it.

Might help....

[barry9UDQ6]

It's difficult to say just from your explanation.

But you might be coming from other software that is neither a solid modeller nor parametric, and trying to work in the same way that you did there?

Working with surfaces is something you should only use if the geometry is too complex for solid modelling.

Possibly most of your frustrations will go away if you switch to solid modelling.

[TheCADWhisperer]

There is an easy solution to each of your issues.

I recommend that you take them one at a time and Attach a *.f3d file that illustrates each issue.

By tackling each hurdle one at a time you will be in the race in shortest period of time.

[Anonymous]

Thanks everyone who wrote back.

I will be the first to say that there is heaps of functions I have not found or tried out yet in Fusion360.

This is my first modeling software experience unless you count Lightwave on the Amiga, which I barely get started with.

I did try FreeCad (I can hear you all groan) briefly but it very quickly drove me crazy, and when I tried Fusion it just made sense and worked the way I believed it should. So I didnt complain having to pay something.

Probably the part I find a little frustrating about Fusion the the Sketch manipuation and finding the arrow keys dont move parts of the sketch in 1mm or similar incriments. But, let me qualify that by saying that its still WAY easier than Freecad.

I just need more time to practice, but at the same time I am on a deadline to finish a design for aproduct launch. So Im likely to just push on with what I know till that is done before exploring beyond what I already know will get the job done, even though I get the sense there are far better ways I could be doing it.

Its a testimony to the software that I can just dive in and get something done without any real prior experience.

Thanks guys

Andrew

[g-andresen]

Hi,

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@Anonymous  schrieb:

Probably the part I find a little frustrating about Fusion the the Sketch manipuation and finding the arrow keys dont move parts of the sketch in 1mm or similar incriments. 

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Do not shift the geometry but assign dedicated values to the action.

Günther

[TheCADWhisperer]

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@Anonymous wrote:

Probably the part I find a little frustrating about Fusion the the Sketch manipulation and finding the arrow keys don’t move parts of the sketch in 1mm or similar increments.   I get the sense there are far better ways I could be doing it.

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Dimension.

[Anonymous]

I get what you are saying but thats where I ran into trouble with Freecad. It was SO particular about where every little piece of the sketch was and how it was constrained that I could not satisfy it to start modeling.

It was a nightmare. I just wanted, no, needed to progress with my design and Freecad was never going to let me.

At least with Fusion360 I can draw a sketch that is defined in the areas that it needs to be, and other areas can be where they look good to me, at least until I need to define them too.

Its no big deal. I have learnt to live without arrow keys that work the way I expected.

Plus have you tried moving the start point of say a square, even with the mouse? I dont know how to unstick it. All that seems to happen is the other sections and points of the square start flopping around. I usually just delete the wrong square and start again in the correct position.  

I guess Im coming from the PCB design software called ExpressPCB where moving traces ( a bit like a sketch) can be moved with arrow keys. And yes I do realise that Fuson 360 can do PCB's too, but Im too entrenched in the other program to jump ships at this late stage.

I tell you what if Fusion360 could import the ExpressPCB file that would be great.

Thanks again and I look forward to the hopefully not-too-distant-future, where I will have more time to learn. 

AndrewC