Extrude surface plugin?

[L i am]

Hi all, I am trying to give a piece of complex geometry thickness, and have attached an example of what I mean. I thought there was a plugin called "extrude surface" and or "joint push pull" but was unable to find either in extension warehouse. Can somebody point me in the right direction as to which program would be best to achieve thickness to the attached model image.
Thanks

[filibis]

Hi,
Check this plugin: JointPushPull Interactive.

[TIG]

You also need Fredo's Lib installed.
https://sketchucation.com/pluginstore?pln=LibFredo6
Some authors like Fredo and myself eschew the current EWH set up and use the [dare I say it, superior] SketchUcation PluginStore...

[L i am]

Thanks filibis, Tig, downloaded it and it works and thank you also Fredo!