The Dave Method

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The Dave Method

Postby Box » Wed Aug 16, 2017 1:47 pm

The Dave Method is the clever use of components popularized by @DaveR to avoid the tiny face issue.
Sketchup fails to form faces when edge segments get down around the 1/1000" mark. However, tiny faces can exist so the workaround has generally been to scale up your geometry, edit it, then scale back down.
This works, but can lead to some issues.
The Dave Method leverages the power of components to make life easier.
The basic concept is, you start with a component set at the size you want, then you make a copy of that component and scale it up (this can be a random amount), you then edit the large component and those edits will be reflected in the original. You can then simply delete the large component, thus avoiding scaling down problems.

Here are two examples of how the edits work.
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Re: The Dave Method

Postby pbacot » Wed Aug 16, 2017 4:36 pm

Good Job! Dave Method
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Re: The Dave Method

Postby pilou » Thu Mar 14, 2019 1:40 pm

It's a real geometric failure or a display failure ?
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Re: The Dave Method

Postby TIG » Thu Mar 14, 2019 2:25 pm

SketchUp can't create tiny edges < 1/1000" long, because it regards their vertex point as being coincident and so it skips making them, as a result any faces relying on those tiny edges are also not created - so you get unwanted holes in the new geometry.

If you scale up the problem geometry - as with the Dave Method, by scaling a copy of a tiny component-instance to be 'giant' - then the potentially problematical edges and faces are no longer too small, and they now get created.

Deleting the giant copy afterwards will not affect the original tiny version, which can still have tiny geometry within it.
You can have tiny geometry, but you cannot create tiny geometry from scratch.

That's the purpose of the Dave Method - to circumvent the 1/1000" tolerance limitation, and thereby avoid missing geometry.
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Re: The Dave Method

Postby pilou » Thu Mar 14, 2019 2:42 pm

Thx for the explanations! :fro:
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