Errors from deleting a construction line

[veggiedom]

Hi all,

I'm designing for a Laser cutter (3mm ply), so need to lay flat the design. I've done this with joints. the vertical component is a copy of the horizontal component, so when I update it, it should remain the same, should!

I was trying to move the rectangular cutout up and accidentally deleted a guide line. I now have broken the model, and it is throwing me loads of errors when I try and modify the vertical component.

sun_hood_1 v7 (newest file)

I've added an old working file - Note construction the line (centered from top to bottom, with a midpoint constraint) between the red arrows below.

sun_hood v39 (old working file, but old)

and the latest broken file for you to see what I've done wrong.

sun_hood_1 v7 (newest file)

 

I'm really struggling with understanding the errors & how to fix them.

1) Is there a good, in depth tutorial on fixing these kind of errors?

2) Is there a good tutorial on understanding the timeline, and how to use the undo function, because I'm getting really confused on what's happening when I try and undo multiple times.

3) how can I fix this?

Kind regards,

Reggie.

 

[jhackney1972]

Attach your model and maybe some of the Forum users can tell you what you need to do.  As far as tutorials, click on the Help button and look at the Self-Paced Learning.  The skills you are asking about come from a deep understanding of the proper way to model in Fusion 360, not from one example.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

[davebYYPCU]

Need to lay flat... Why?

2. Undo, back steps the current history in memory, so repeated use will take you back to when the file opened.  Only works back to last user save.  

Save and continue, deletes the undo history before Save.

3. Ditch the file with so many errors, and open the last known good one.

Do not delete, the line.  Edit instead.

Remove the mid point Constraints.  Add new dimension to put the line where you need it.

Deleting that line - referenced down the line, will create coloured icons in the time line.  Immediate Undo, fixes that.

Might help....

[veggiedom]

"Need to lay flat" to optimise 300x200 sheets of ply.

2) thought so, but needed to check

3) probably the quickest, but ill be here again, if I don't learn how to "fix" errors. It may need a different approach to my approach, which is a bit "do what I need to get what I need", perhaps I need a "think ahead when constraining to things I may want to modify" approach.

I need to invest the time to understand what I did wrong, but its tempting to just re build from last good one!

Thanks for your advice.

[veggiedom]

Sorry, I thought I did attach the models, computers - Arrgh!

[davebYYPCU]

We can assist you with the learning bit, if we have your data.

Are oiu using Fusion Manufacturing, or 

Export by DXF?  (DXFer)

[veggiedom]

This video really helped me. I found out it wasn't the line I was thinking about, by going back to the first error in my design and trying to understand what I'd done. 

https://www.youtube.com/watch?v=O6gPQBx-s-k