Sketches appear in different plane when project reloaded
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Sketches appear in different plane when project reloaded
Hi
I am wondering if I have done something wrong, or if there is a bug in Freecad 0.18?
I have been creating a model and have added features by clicking on a surface, then drawing a sketch and then padding etc to get the desired result. I added a datum line to add a circular pattern which worked well and I printed the model which came out ok, but needing minor adjustments.
When I loaded the FCSTD file, the polar array had an exclamation mark by it. When I edited the sketch that it was based on the pattern appeared in a plane 90 degrees to the one it was drawn on and the datum line.
The jpg shows the edge of the circle they should be on and where the sketch actually is.
Can anyone explain this or advise how to avoid / solve?
Many thanks
Andrew
I am wondering if I have done something wrong, or if there is a bug in Freecad 0.18?
I have been creating a model and have added features by clicking on a surface, then drawing a sketch and then padding etc to get the desired result. I added a datum line to add a circular pattern which worked well and I printed the model which came out ok, but needing minor adjustments.
When I loaded the FCSTD file, the polar array had an exclamation mark by it. When I edited the sketch that it was based on the pattern appeared in a plane 90 degrees to the one it was drawn on and the datum line.
The jpg shows the edge of the circle they should be on and where the sketch actually is.
Can anyone explain this or advise how to avoid / solve?
Many thanks
Andrew
Re: Sketches appear in different plane when project reloaded
Without the file you leave us merely guessing:
- Mark the root of the tree for recomputing and recompute the whole document
- You have attached your sketch to a face and ran in the topological naming issue (search the forum for that).
Have a look at this page, especially the paragraph about creating stable models how to avoid such behaviour.
- Mark the root of the tree for recomputing and recompute the whole document
- You have attached your sketch to a face and ran in the topological naming issue (search the forum for that).
Have a look at this page, especially the paragraph about creating stable models how to avoid such behaviour.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Sketches appear in different plane when project reloaded
Chris
Many thanks - it does seem to be the issue you allude to as I had deleted earlier items in the list when this happened.
Any suggestions what you should do to avoid it when you have multiple items in a list?
Andrew
Many thanks - it does seem to be the issue you allude to as I had deleted earlier items in the list when this happened.
Any suggestions what you should do to avoid it when you have multiple items in a list?
Andrew
Re: Sketches appear in different plane when project reloaded
What kind of list are you talking about?
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Sketches appear in different plane when project reloaded
Hi Chris
I am probably using the wrong term. I was meaning the 'Tree View' where it shows the 'Labels and Attributes', then 'Application', then 'Body' and under that, the constituent components that make up the body.
I have created a model by adding the parts in a logical (to me) way under the main body. As it contained multiple similar parts, I started to rename the components (pads, Fillets, Polars etc) to make them more understandable.
I then started to make changes after printing early prototypes and deleted some of the items from the middle of the list (or at least not the end). I then found that when I saved and re-opened the model, the polar patterns after the deleted item had lost the plane that they were attached to, and so their sketches were 'floating' in mid air on the original plane of the object.
One suggestion to resolve this was to 'recalculate' the entire model. I right clicked on the 'Body' and selected 'Mark to recompute' and a green tick appeared, but the errors were not corrected.
The only solution I have found is to delete everything beneath the original deleted object and add them again. I am hopeful this is not the correct solution otherwise it makes FreeCad much less useful a tool.
As with my other post you kindly helped with, I know I need to read the surrounding information on this bug, but have not had time to do so yet.
I think I need to go back to basics to understand the way that FreeCad builds these objects and 'best practice' when creating a model but need to find a resource to help with this and the time to use it.
With best wishes,
Andrew
I am probably using the wrong term. I was meaning the 'Tree View' where it shows the 'Labels and Attributes', then 'Application', then 'Body' and under that, the constituent components that make up the body.
I have created a model by adding the parts in a logical (to me) way under the main body. As it contained multiple similar parts, I started to rename the components (pads, Fillets, Polars etc) to make them more understandable.
I then started to make changes after printing early prototypes and deleted some of the items from the middle of the list (or at least not the end). I then found that when I saved and re-opened the model, the polar patterns after the deleted item had lost the plane that they were attached to, and so their sketches were 'floating' in mid air on the original plane of the object.
One suggestion to resolve this was to 'recalculate' the entire model. I right clicked on the 'Body' and selected 'Mark to recompute' and a green tick appeared, but the errors were not corrected.
The only solution I have found is to delete everything beneath the original deleted object and add them again. I am hopeful this is not the correct solution otherwise it makes FreeCad much less useful a tool.
As with my other post you kindly helped with, I know I need to read the surrounding information on this bug, but have not had time to do so yet.
I think I need to go back to basics to understand the way that FreeCad builds these objects and 'best practice' when creating a model but need to find a resource to help with this and the time to use it.
With best wishes,
Andrew
Re: Sketches appear in different plane when project reloaded
You don't have to recreate everything. The best way is to follow the hints for createing stable models mentioned above. But even without that you often can reattach the sketches to the appropriate faces. if that doesn't work you can almost always go over all subsequent features and reuse at least the sketches. A pocket or pad is quickly done compared to creating a sketch.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Sketches appear in different plane when project reloaded
Chris
Can you point me in the direction or tell me how to reattach a sketch to a face? I have done a quick search but drawn a blank.
Andrew
Can you point me in the direction or tell me how to reattach a sketch to a face? I have done a quick search but drawn a blank.
Andrew
Re: Sketches appear in different plane when project reloaded
https://www.freecadweb.org/wiki/Sketcher_MapSketch
Or: click on AttachmentOffset, click on the button appearing to the right and select the appropriate Attachment similar to https://www.freecadweb.org/wiki/Part_At ... hment_mode.
Or: click on AttachmentOffset, click on the button appearing to the right and select the appropriate Attachment similar to https://www.freecadweb.org/wiki/Part_At ... hment_mode.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Sketches appear in different plane when project reloaded
Thank you - I will give that a go.
Andrew
Andrew
Re: Sketches appear in different plane when project reloaded
You're welcome. You can always upload a model (up to 1MB size) and ask for help, if you get stuck.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.