problem: union separate parts of a single volume (stl file)

[ale47p]

I tried, there are still mistakes, but I don't know if you're okay or not, if anyone else can try to edit these. . .
p.s. with the objs I had never had to deal with...in the meantime here is the obj... in a little place the sl

 

[ale47p]

Here we go.

 

[+forte]

Here we go.

but you did not join the parts (in red) tristus did it(in green)

 

[ale47p]

You're right, as soon as I can

 

[ale47p]

@gallup I joined your bones, they did it to me for 18 years ago.

Let me know if you're okay, I did two stl, one for the right foot and one for the left one.

 

[Gallup]

Thank you all, it's fine!