Hi again, I will add an example of what I asked in my last post.

In this model I have copied twice the same group, made out from 7 subgroups/subcomponents (all of them solids, with a volume I can see in the entity info).

If I select the "group of groups/components" (right) and run CoG I obtain a weight of 38kg.

If I run CoG for each of the subgroups or subcomponents separately and then run Composite CoG from the obtained CoG entities, (left) I obtain a weight of only about 13 kg.

What is the reason for that? Can't this plugin be used for a group of groups, even if the density is the same for all of them?

Thank you for any help you can give me.

Antonio

Great job TIG, really useful plugin. I have a doubt, though. When there are many nested groups/components but all of them are made from the same material so density is constant across all of them, (e.g. a piece of furniture made from same wood) can the plugin directly find the COG of the final group containing all subgroups/subcomponents? Or should I find COG of every object separately and join them toghether with "Composite COG" tool?
In the overview of the plugin is explained that you can select "a group of groups" and in fact I see that I can select the outer object and I get a result, but then the calculated weight is wrong, sometimes just a bit, others almost double than real, depending on the model. And if that matters, as far as I know all subcomonents/subgroups are solids. I don't know if this is because the plugin is not intended to work this way or it is because of a model issue or any other mistake in my workflow. Thanks in advance for your help.
Antonio

Fredo,
No, I can´t. I have installed FredoScale, ToolsOnSurface and Round Corner. None of them opens the Default parameter dialog.(e.g. Tools-Fredo6 Collection-ToolsOnFace-Default Parameters... does nothing, same for FredoScale or Round Corner) And the same for LibFredo6 library, through Window-LibFredo6 Settings-Default Paramenters... nothing happens. But as I said before other dialog boxes open normally (Check for update or Language Translation), and if I copy for example FredoScale.def from the still existing SU 7 files tree to the SU8 DEFPARAM-DIR directory I see that is detected because the changes take effect (i.e. change of the toolbar icons, etc.). The problem is about the dialog box itself, it doesn´t open no matter how I try. I am missing something? Any way, with older versions of same plugins everything works, both in SU 7 or 8.
Thank you for your help.

Thomthom,
Sorry for the delayed reply. No messages in the ruby console when trying to open the Default Parameters dialog box. Any one found this problem?
Thanks

Fredo,
I add a bit more information: When trying to open the dialog box SU creates the DEFPARAM_Dir, but it keeps empty. If I copy inside of it the parameters definition file (i.e. ToolsOnSurface.def) from the SU7.1 installation, the changes take effect in SU 8. I don`t know if this helps you to isolate the problem.
Thank you again.

Fredo,
Yes both Translation and Check For Update dialog boxes work normally; By the way, if I install my old plugins (Libfredo6 3.4c) then the default preferences box opens normally, so the problem seems to be only in the new version.
Thanks for your fast replay.

Hi,
I had Tools on surface, Fredo Scale and other Fredo plugins installed in SU 7.1 and all was working OK. Today I installed SU 8, downloaded last versions of same plugins and everything worked OK until I tried to open Default Parameters dialog. It simply didn't open for any of the plugins... I reinstall plugins, even reinstall SU... nothing, the Default Parameters doesn't open. Any idea to solve that?
Thank you in advance.