Sketch entirely unconstrained and sketch fillet failing

[micahhhlarsonnn]

Hello all,

I am in the midst of a final project for my airport design class and I've made great progress on the airport layout plan (I'd ideally use AutoCAD, but I can work faster in Fusion). When I started the sketch initially, it was mostly defined but there were a few lines needing constraints. I'm not sure what happened, but after coming back to my file a few versions later, there were no longer any defined portions of my sketch (it was all blue), and as a result, the sketch fillet tool continually fails when I try to complete any action. Is there a way I can redefine the sketch so I can continue working? I'm currently at a standstill. Attached is the file. Please let me know if I can offer further context.

ML

[CGBenner]

@micahhhlarsonnn 

Welcome aboard!  I moved your post here hoping to get more eyes on it.  Good luck, and thanks for sharing the files!

[TheCADWhisperer]

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@micahhhlarsonnn wrote:

I'm currently at a standstill.

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If this were my work - I would start over and break it up into at least 5 simpler sketches.

It will go faster than you think. Start over.

[TheCADWhisperer]

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@micahhhlarsonnn wrote:

...the sketch fillet tool continually fails when I try to complete any action.

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When I have trouble with a sketch fillet - I instead use a 3-Point Tangent Arc which does not require any trimming.

I might later Trim or Break, but of course, I would never have sketches of this complexity in Fusion or in AutoCAD.

Break up into logical bits - just like in the real world.

[micahhhlarsonnn]

Yes, that might make sense for certain applications. However, since federal regulations stipulate every single centerline and shoulder fillet radius, I need to have that manipulative flexibility and precision to specify that a certain taxiway centerline is a 115ft radius, while an HSRET shoulder curve is a 1500ft radius. In this case, a simple three-point arc will not suffice. I dread starting over this far into things...

[TheCADWhisperer]

Geometry is geometry.

Nothing special here.

In fact, this is pretty simple geometry.

[etfrench]

I agree with @TheCADWhisperer, start over.  It's actually pretty easy and quick to redo a design the second time.

There are a lot of missing dimensions and quite a few are 9 decimal places.  Is there a reason a lot of the long parallel lines are broken into short segments?

[Drewpan]

Hi,

After 17 years working in Aviation, I am very familiar with the International Civil Aviation Organisation (ICAO)

Annexes (Rules and Regulations) and I feel your pain with your project. However the best advice I can give you

in this instance is start again and this time use the proper tool for the job.

If you were going to actually MODEL the airport then drawing sketches and extruding the runways and taxi areas

in Fusion is the way to go but you are NOT going to model it. The bad news here is that this wonderful sketch you

are drawing will NOT translate into an engineering drawing which I suspect was your original intent. The drawing

option in Fusion imports models not sketches to generate the drawings.

AutoCAD is a much better tool in this instance to achieve what you want. The good news is that since you now have

much of the design worked out in your sketch, you will possibly be able to save it as a .dwf file and import it into

AutoCAD. If you can import the sketch you are half way home, if you have to redraw then at least you have much of

the geometry worked out for you to just input. Redrawing geometry you have already done is much quicker and easier

which is why the Gurus are recommending a re-start.

Sorry to be the bearer of bad news. Fusion is a Modeling app that can create drawings from models, AutoCAD is

a Drafting app for creating drawings that can model.

Cheers

Andrew

[laughingcreek]

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@Drewpan wrote:...The bad news here is that this wonderful sketch you

are drawing will NOT translate into an engineering drawing which I suspect was your original intent. The drawing

option in Fusion imports models not sketches to generate the drawings....

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That is old information.  sketches from the modeling environment can be exposed and used in the drawing environment.  only the regular lines/curves come thru though.  construction lines and dimensions don't.  you would need to re-dimension the sketches  in the drawings environment.