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Bend lines missing
Discussion created by
on Mar 21, 2008
on Apr 11, 2008 by TRUNG DO
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I have a simple bracket that is handed. I have mirrored the part and inserted bends but the bend lines are missing?
Is it a bug or something I am missing?
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Mar 21, 2008 12:07 PM
It's a bug
Been here, tried it, bought the "T" shirt
Still not fixed
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Apr 11, 2008 3:13 PM
For years I have avoided the mirror feature when doing sheetmetal constructions like the plague. One of the old bugs was SW forcing you to mirror everything on one flange to the opposite side.
I recently, tried to mirror an assembly that has both solid parts ans sheetmetal parts. (I always create an assembly file of a part file and save it with the same name. I do this so that in the future if I need to add fasteners such as PEM nuts, I can do it without messing up the drawing file. As you know you can replace part file with a part file but not an assembly file with a part file with affecting your drawing.) Thus my drawings use the assembly (sldasm) for the standard 3-view construction and the sldprt for the flat pattern generation. My way adds more files to the project but what i get in return is that my top assemblies are only composed of "assembly" files of individual part files. The memory saving is on the order of 1/3 to 2/5 when compared to a top assembly that is composed of sldprt files.
I was able to figure a way to create a RH top assembly directly from the LH top assembly without having to save the new RH assembly and going back to delete the "LH assembly".
The Good news:
1. Open a blank assembly and import the LH top assembly.
2. From the new blank assembly, go through the process of creating the RH top assembly by creating new names for your other subassemblies and parts.
3. SW2005 will then put both the LH and RH top assemblies within the new blank assembly that you have just created.
4. Now, delete the new blank assembly that contains both the LH and RH top assemblies.
5. If you have done everything correctly, SW will have created a new separate RH top assembly that is still link to the LH top assembly.
Now the bad news:
1. This works great for non-sheetmetal parts and assemblies.
2. SW2005 will not automatically create a flattened part file for the .sldprt if you created the sldpart from the assembly file. For instance, if X-001LH.sldasm is the assembly of just X-001LH.sldprt part file, and you created X-001RH.sldasm and X-001.sldprt using the "mirror components" command, then SW2005 will not create a default flat-pattern of X-001RH.sldprt! You can manually add the "insert bend" command to turn the X-001RH.sldprt part into a sheetmetal. (I always create an assembly file of a part file and save it with the same name. I do this so that in the future if I need to add fasteners such as PEM nuts, I can do it without messing up the drawing file. As you know you can replace part file with a part file but not an assembly file with a part file with affecting your drawing.)
3. However, the bend lines are not available for you import X-001RH.sldprt into your drawing. I don't want to take the chance of manually adding the bend lines and not having them updated when I changed material or bend allowance.
4. When creating the X-001RH.sldasm assembly file using the "mirror components" command, all of your default planes will be deleted. In other words, any part under the X-001LH.sldasm assembly that references the three standard coordinate planes will now have its mates deleted by SW2005.
5. SW2005 will convert all of the linear patterns into individual parts. This is fine for a few parts, but when you are dealing with hundreds of fastener types, your feature tree becomes almost unmanageable. Adding salt to your wound, is the fact that SW2005, and probably 2008, will give you the abundant opportunity to add all of those missing mates that referenced the three standard views.
6. You must go through the LH top assembly and change the reference planes from the three standard planes to a part or assembly's standard plane if you want to save yourself the trouble of doing this in the RH top assembly. You are still doing the same work, but at least your RH top assembly just disintegrates into oblivion.
7. However, you are now in a really bad situation. Your LH parts are now overly dependent on each other individual planes or surfaces. If the "anchor or first part" were to become corrupted, all of your LH parts will now sin out of control. But wait, it gets better, your newly minted mirrored RH top assembly will also suffer the same "bird flu" since it was based on the LH top assembly!
I still create all of my sheetmetal parts the old fashion way. I apply the "insert bends" feature after I am finished with the parts. I know that there are some real advantages in starting with a "sheetmetal" part such as doing flanges at odd angles or with unknown future changes or miter flanges. The "new" sheetmetal construction forces you to create too many "unbend features" during subsequent modifications.
I hope your organization will get SW to look at these problems listed above that have been with us since 2001!
Another limitation that I ran into was that if I wanted to make a RH top assembly file from the LH top assembly file
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