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Changing Sketch breaks 3D model? (by Christoph)
I have tried to model a simple piece of furniture. Once I was mostly happy, I went back to the first sketch and changed one of the dimensions to be 90 units instead of 65. I then went back to the latest step in my model and noticed that 4 steps are now showing "err" and that the model is suddenly broken. Solvespace shows me thick red lines, but doesn't explain what they mean.
https://i.imgur.com/dTIQfae.png -- the dark green struts were supposed to be _inside_ the cabinet. And they are in the original file, but seemingly flipped to the outside when I changed the dimensions. My guess is that when I resized, the 2 extrusions for the struts flipped directions somehow.
https://i.imgur.com/9WLHXes.png -- I don't know what to do about these thick red lines. They seem to appear at random and when I click through my model, they sometimes appear and then sometimes not.
What have I done wrong here? I'm mostly a beginner with 3D modelling (I have used FreeCAD for maybe a week, Fusion for a day and TinkerCAD also for a week, over the span of 2 years).
Kind regards,
Christoph
https://i.imgur.com/dTIQfae.png -- the dark green struts were supposed to be _inside_ the cabinet. And they are in the original file, but seemingly flipped to the outside when I changed the dimensions. My guess is that when I resized, the 2 extrusions for the struts flipped directions somehow.
https://i.imgur.com/9WLHXes.png -- I don't know what to do about these thick red lines. They seem to appear at random and when I click through my model, they sometimes appear and then sometimes not.
What have I done wrong here? I'm mostly a beginner with 3D modelling (I have used FreeCAD for maybe a week, Fusion for a day and TinkerCAD also for a week, over the span of 2 years).
Kind regards,
Christoph
(no subject) (by ruevs)
Changing the 65 to 90 in the first sketch does show "thick red lines" - those are "naked edges" - an indication that SolveSpace thinks there is something wrong with the geometry of the model.
In this case it is a false alarm - just hit `ESC` and the red lines disappear and the model is in fact OK. If fact your original files has the same red lines immediately after opening.
While yours is not one of them, there are cases when the red lines indicate either an "impossible" geometry or a bug in SolveSpace or both. For more detail on the topic than you could possibly want here https://github.com/solvespace/solvespace/issues/738
As a side note - looking at the way you constructed the cabinet - such models are better done as assemblies. Take a look at the tutorial https://solvespace.com/box.pl.
In essence :
1. Make a sketch with all the dimensions as simple construction line segments.
2. Create a separate file for each "panel":
- Top/bottom
- Sides
- Back
- Door
- Side bars
- Back bars
- Vertical struts
Each of these should `link` the sketch with the dimensions and use them.
3. Assemble the cabinet by linking the parts and "step translating" them as needed.
In this case it is a false alarm - just hit `ESC` and the red lines disappear and the model is in fact OK. If fact your original files has the same red lines immediately after opening.
While yours is not one of them, there are cases when the red lines indicate either an "impossible" geometry or a bug in SolveSpace or both. For more detail on the topic than you could possibly want here https://github.com/solvespace/solvespace/issues/738
As a side note - looking at the way you constructed the cabinet - such models are better done as assemblies. Take a look at the tutorial https://solvespace.com/box.pl.
In essence :
1. Make a sketch with all the dimensions as simple construction line segments.
2. Create a separate file for each "panel":
- Top/bottom
- Sides
- Back
- Door
- Side bars
- Back bars
- Vertical struts
Each of these should `link` the sketch with the dimensions and use them.
3. Assemble the cabinet by linking the parts and "step translating" them as needed.
(no subject) (by Christoph)
Thank you kindly, ruevs. I will try out your tips :-)
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