EASY Q: Fillet going in the wrong direction

[natbrT4KMC]

I have created a fillet from a tab inside a column and wanted to add a fillet UP between the horizontal top surface of the tab to the inside wall of the column to make it stronger.  Correctly it looks like this: 

When I tried to create the same upward filets on the opposite end ... the fillet control points the wrong direction (in towards the tab body and not away towards the inner surface of the column) and I can't seem to toggle it. Example: 

You can see from the "edit feature" dialog in both examples that I'm using the same settings.  But getting different behavior.  Any ideas?

Link to the design: https://a360.co/3c9d53E

In the parametric timeline, look for the first fillet icon (or 13 items in from the left) ... .

Thanks! 

-- Nat 

[TrippyLighting]

This indicates that the tabs are separate bodies. This can be fixed with a Modify->combine->join.

YOu might be able to also evaluate prior modeling operations  such as extrudes and see if they offer a suitable join option.

[natbrT4KMC]

thanks for the suggestions -- I certainly will modify > combine > join but maybe after I get the fillet going the right direction.  The way it goes now (in the incorrect example above) its actually making the join weaker, not stronger. 

-- Nat

[natbrT4KMC]

After further investigation (see graphic below) ... it looks like two of the tabs (in yellow) are combined with the column (funnel body) , two (in red) are not.  However, both sets of tabs were created extruding up using the join command in the  11th parametric step.  Everything looks OK at the sketch level (Sketch 4 in the design) .. any other thoughts as to why these two sets of tabs are behaving differently?

-- Nat 

[TheCADWhisperer · Accepted solution]

Your sketches are not fully defined.

This is the most basic principle in CAD.

There are a plethora of issues with your modeling technique - from beginning to end...

[natbrT4KMC]

Hi Mr. Mather,

Ack, yes, guilty as charged! -- I pretty much self-taught and clearly have inadvertently picked up many bad habits. 😐

However, I did use your tip to at least get my current model to work ... so thanks!  

Where would you recommend I get some foundational Fusion360 instruction -- I've been to your channel, but looks a little above my pay grade (although I will definitely watch Fusion 360 Strategies to Avoid Issues) ... you also note elsewhere to be careful of some YouTube instruction. Whose content would you send me in an effort to improve my F360 modeling techniques and approaches?  At this point, I still mainly working Fusions' Solid mode but someday would like to get proficient in  Forms and sculpting. 

I really appreciate your help and advice. 

-- Nat 

@TheCADWhisperer 

[armchairmr]

EXCELLENT TIP!  😎

Thank you for posting it.

That issue has stopped my cold during a few projects, and the work-arounds I used were NOT pretty.  This is a very elegant solution.  Fillets are used all the time, so I vote this should be part of any tips on the use of Fillets.

Dave Donaldson