So what you could do is model the 3 seperate parts by holding shift and clicking and selecting all three.
However you should put something in the direct center of it all, select that part as well with the 3 other parts, and make it a model.
Go to view, go to properties, select the model, and in properties it should say "PrimaryPart". Press that, then press the block in the center.
Enter a script by right clicking the model, press select object, type script, and press to insert. Then proceed to type:
2 | script.Parent:SetPrimaryPartCFrame(script.Parent:GetPrimaryPartCFrame()*CFrame.fromEulerAnglesXYZ( 0 , 0 , 0 )) |
Change the AnglesXYZ(0,0,0)) To the axis you want, so like .1,0,0 should spin on the X axis if I am correct.
After that it should be done.