Scale Fail

[Anonymous]

Does F360 have prohibition against scaling a scaled drawing similar to the one that prevents one from offsetting an offset line? After some false starts I was able to scale down a sketch for a series of similar designs I want to make in different sizes. Now I can't scale the scaled-down sketch to a still smaller size, and, oddly enough, the original sketch won't allow me to scale it down, either. What trap have I fallen into? I could save a ton of time if I don't have to redraw each size. Thanks in advance for any advice.

[TrippyLighting]

Can you provide a model so we can possibly suggest alternate workflows or figure out what's not working ?

[TheCADWhisperer]

I am confused about whether the issue is with drawing environment or sketch environment.

In either case, I suspect parametric dimensions could make it easy.

File>Export and then Attach your *.f3d as suggested by @TrippyLighting and I'll bet you get a simple solution.

[HughesTooling · Accepted solution]

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@Anonymous wrote:

 What trap have I fallen into? I could save a ton of time if I don't have to redraw each size. Thanks in advance for any advice.

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Might be you're trying to select a base point for the scale that's part of the selected entities. If you window select everything in the sketch you will not be able to select a base point as all points are already selected in the entities.

Mark

[Anonymous]

Here's the sketch. What I'd like to do (and this is the way it worked before), is to invoke the sketch scale command from within the sketch environment, highlight the entire drawing (which will select all the points), and then pick the point to scale around (the top or bottom point of the leftmost line will do). If all goes well I should see the scale factor window open. A reduction of .97 will bring the drawing to the desired size, but the scale factor window doesn't open for some reason. That leaves me here staring at the sketch feeling stupid and clueless about what might need to be done next.

Have at it, lads! The double-bass world will owe you a debt of gratitude! (I'll be pretty grateful, too). 😀

[HughesTooling · Accepted solution]

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@Anonymous wrote:

Here's the sketch. What I'd like to do (and this is the way it worked before), is to invoke the sketch scale command from within the sketch environment, highlight the entire drawing (which will select all the points), and then pick the point to scale around (the top or bottom point of the leftmost line will do). If all goes well I should see the scale factor window open.

As I said above you can't use a selected point. Try selecting the base point first then window select the entities you want to scale.

Mark

[Anonymous]

Yes, Mark, that's exactly what seems to have happened. I put in another point that was not in the selected zone, and the scale worked flawlessly. I think what happened my first time was that there was a second line underlying the visible point, and for some reason that's the one Fusion picked. I should have realized it when I saw the sketch scaled correctly, but that there was a point remaining in the pre-scale position.

This brings up something that's bugged me with F360 from the start. Is there any way to tell when lines are duplicated? For example, in a previous CAD program, a copy/paste command pasted the copy in a slightly offset position from the original so that it was visible. I can see why Fusion would not want to compound a copy/move operation with the added math for an offset correction, but perhaps the copy could be in a different color until after it is moved or pasted. We beginners are prone to looking at the screen and, not seeing our copy, assuming that we made a mistake. The we'll do the whole thing over (and over) until there are three ore more iterations of the object all exactly in the same position.

[TrippyLighting]

@Anonymous I am not sure what your previous experience with CAD software entails, but when you work with any of the common 3D software packages e.g. SolidWorks Autodesk Inventor, Solid Edge and Fusion 360 it s usually strongly advised to fully constrain and fully dimension sketches.

In Fusion 360 that is even doubly important because you can drag unconstrained sketch elements when not actively editing the sketch. That is very easy to do by accident.

Your sketch contains way too few constraints and no dimensions whatsoever. My recommendation would be to toss out what you've learned in previous CAD experiences and start with the tutorials in Learn & Support section and then apply the learned to your instrument modeling.building projects. At the moment you are skipping over important basics but it'll hurt you in the long run.

[Anonymous]

Hi Hughes Tooling,

I have similar problem, but nothing helps...

I can't choose "Point" for scale

Please take a look in attachment. I appreciate any help!

Ross

[g-andresen]

Hi,

try this: select the line not the profile (window selection)

line selection

or, as recommended by @HughesTooling* :

1. select tool (scale)

2. select point

3. select profile with window selection

günther

*If you window select everything in the sketch you will not be able to select a base point as all points are already selected in the entities

[Anonymous]

Andresen,

Thank you very much!!!

your way works for me!

I appreciate your help!