topic Re: Help 'Stretching' a model in Fusion Design, Validate & Document Forum

Help 'Stretching' a model

RyansCustom — Sat, 05 Nov 2016 19:53:36 GMT

I am fairly new to Fusion and I was looking for help with a model. I managed to model the part to my satisfaction, but I am having trouble modifying it. I'm trying to keep the right side of the picture the same while moving (stretching?) the bottom. I essentially want to make the part longer on the left side only. Is there a way of doing this without going back to my sketch. Any help would be appreciated.

Re: Help 'Stretching' a model

TrippyLighting — Sat, 05 Nov 2016 20:10:40 GMT

I am not sure why you used direct modeling instead of parametric modeling. This would be much easier to do with the design history enabled.

Re: Help 'Stretching' a model

RyansCustom — Sat, 05 Nov 2016 20:15:13 GMT

This is mostly new to me. I'm a cam guy who is trying to get into more design. I don't really know the difference between the 2.

Re: Help 'Stretching' a model

TrippyLighting — Sat, 05 Nov 2016 20:33:06 GMT

Have you watched the tutorial in the Learn section ?

I personally model mostly with "capture design history" enabled. So parametric modeling.

I would strip everything done to the sketches, right-click on the browser and select "record design history".

Before starting to model, you should fully dimension your sketch in a way that by changing one dimension, your model get's stretched.

Also, that sketch would be much simpler. All the radii you applied in the sketch would be done as solid features. that is probably a lot less work an more stable than this complicated sketch.

Re: Help 'Stretching' a model

RyansCustom — Sat, 05 Nov 2016 20:42:03 GMT

I do have the 'capture design history' checked. I don't know why the timeline is not on the bottom. This was based off of a part that was scanned and imported as an IGES file. That is why it is not as clean as it should be. I guess I will start from scratch. I was hoping there would be an easier solution.

Re: Help 'Stretching' a model

TMC.Engineering — Sat, 05 Nov 2016 21:46:33 GMT

Importing a iges or step file makes a dumb solid. no features If I get time tomorrow I will post a video.

Depending on what you need I would probably take the time to re-create the part with history.

Re: Help 'Stretching' a model

RyansCustom — Sun, 20 Nov 2016 20:29:31 GMT

So I managed to stumble through this and I thought I would share the process. So instead of starting from scratch, I watched a bunch of videos and tutorials and came up with a solution. First, I imported the STEP file into a new design. One step that I missed before is to use the 'find features' command. I then turned on the 'capture design history'. This gave me a better starting point then the 'dumb' STEP file model. From there I could create some sketches to split the body. I then used a combination of 'press pull', 'edit face', and 'replace face' commands. The result isn't as good as if I started from scratch, but the model was acceptable and machinable. Thanks for guiding me in the right direction.

Re: Help 'Stretching' a model

JDMather — Sun, 20 Nov 2016 20:56:23 GMT

I would like to experiment with some Direct Editing tips that I picked up at AU.

Can you attach your final result file here?

I suspect there is an easier way that will significantly reduce your effort in the future. (and perfectly accurate - better than your machining process tolerance)

Re: Help 'Stretching' a model

zodiaceng — Sun, 20 Nov 2016 21:47:15 GMT

Was just thinking the same as above. You should be able to select all the faces on the left side of the part and just pull the hole away. Everything else should move along with it accordingly in direct modeling mode. If you have sketches/etc though modifyin them would be the best way to do it.

Re: Help 'Stretching' a model

RyansCustom — Mon, 21 Nov 2016 13:44:14 GMT

@Anonymous wrote:
I would like to experiment with some Direct Editing tips that I picked up at AU.
Can you attach your final result file here?
I suspect there is an easier way that will significantly reduce your effort in the future. (and perfectly accurate - better than your machining process tolerance)

I would rather not post the finished part file as it is an experimental prototype for a customer. Screen shots are ok, but I don't want to post the model, sorry.

Re: Help 'Stretching' a model

JDMather — Mon, 21 Nov 2016 14:09:23 GMT

I don't really need it - I just wanted to see if I could exactly reproduce edited model with Direct Editing techniques.

You posted the original - would you like for me to request (or you can do the same) that the moderator remove the original file?

Re: Help 'Stretching' a model

RyansCustom — Mon, 21 Nov 2016 14:13:55 GMT

You can use the original. There is nothing proprietary there. I just don't want to post the finished model.