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I have an object that represents a board with a 1/2" tenon on the ends. If I scale the board by changing the length, the 1/2" tenon changes length. Is there a way to change the length of the board but keep the tenons always 1/2"? In other words, if the length changes, the middle part of the board changes length but the tenons remain the same length.

Before:

Before

After:

p

I have Pro so I can do a dynamic component if that would be the best approach, but I can't figure out how to freeze a certain part of the object. I thought of creating the object with three different objects sandwiched together and then in the DC adjust the length of the outer (wider part) of the board independent from the center of the sandwich (the tenon part). Then, if possible, hide some of the edges to make it look like a single object. But I'm hoping this is easier than that and I'm just not experienced enough to know it. Thanks.

  • I would posit that you do not want to use a direct(ish) modeler like sketchup but rather a indirect modeler like Solidworks, Creo, NX, Fusion360... Instead. Mainly because you think in a indirect fashion and will save you hundreds of hours over the span of a year if you do this to any extent (when we compared this with students we found that indirect modelers saved about 5-10 hours of work every week. But given direct modelers on average used 12 hours the savings were significant) but yeah moving faces would work in direct modellers. – joojaa Aug 16 at 9:31
  • Thanks for the suggestions. I'll look at these. – Dan G. Aug 16 at 20:39
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I haven't SketcUP Pro, but programs that capable should allow you to pull 3 faces simultaneously to get the wanted length. It's not scaling, you move the surfaces:

enter image description here

The screenshot is from DesignSpark Mechanical (=freeware)

| improve this answer | |
  • I hadn't thought of DesignSpark and will look at it. Thanks for the suggestion. I would be interested if anyone knows if I can move the faces (surfaces) of the end of the board in Sketchup Pro dynamics components when I change the length of the board, keeping the .5 inch tenon. – Dan G. Aug 16 at 20:41

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