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Locking extrusion thickness, contrainsts

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MuirEng
3021 Aufrufe, 3 Antworten

Locking extrusion thickness, contrainsts

Hi, I am trying to do something pretty simple but Family editor is fighting me here.

 

I'm building a family for a simple wall cabinet. It's all sheet wood, .5" thick.

I have reference planes for front, back, top, bottom. I've created extrusions for the sides, top and bottom, each with depth set to .5"

 

Next I align my extrusion faces to the appropriate reference plane (i.e. top of the top locks to the top reference plane, right side of right piece locks to the right plane).

 

If I move the reference planes then I find the free side of the extrusion stays in place, so the extrusion wide increases arbitrary. Clearly not what I want. So I set dimensions on all the panels, assign a label to that, and in the family properties I make a formula PanelThickness=.5".

 

Now when I try and move the reference plane Revit complains about this formula and wants to delete it. But if I unlock the panel to the reference plane I can move the plane and then the panel to the desired location by hand, so clearly there is no conflict.

 

Hints anyone? An is there a more elegant way to lock an extrusion thickness? It's a bit of a nuisance to dimension every panel and those dimensions clutter the model.

 

File posted. Try moving the top reference plane in the front view.... The top should move with it, but it freaks out at me...

 

thanks for any help!

 

Brian Muir, P.Eng, Muir Engineering
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ToanDN
als Antwort auf: MuirEng

See the revised family.  I would associate each panel to the appropriate reference plane so that you can associate their thickness with the thickness parameter (example below).  For panel with negative thickness, you can constrain them to a reference plane offset from the main one.

 

Capture.PNG

Lock the thickness parameters if they are supposed to be static.

 

Capture1.PNG

Nachricht 3 von 4
barthbradley
als Antwort auf: MuirEng

@MuirEng: why do you have 2 overlapping end panels?  Also, I would follow Toan's advice and provide Ref. Planes for the panel thicknesses as well; and align/lock all of the family's extrusions (height, width and depth) to Ref. Planes -- not to other extrusions. IMHO. 

 

Cheers,

 

Barth

 

p.s. you could do the dividing panels as a parameterized array so they are automatically spaced evenly as the width of the cabinet changes. Just a thought. 

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MuirEng
als Antwort auf: barthbradley

Hi guys, thanks for the advice! I have some other things to deal with but I'll come back to this in a while and try the suggestions.

Brian Muir, P.Eng, Muir Engineering

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