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How do you scale the minor diameter of a torus and diameter of cylinder without changing other dimensions?

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  • $\begingroup$ Thank you Crantisz. After alt-S my torus fattens up like a big balloon at the slightest movement of the mouse. I am very new to blender and need some guidance. Your demo illustrates my need perfectly. $\endgroup$ – Barrie Jun 28 '17 at 19:12
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Than you want to scale radius of torus-like objects, the simplest way is using Alt+S Shrink-Fatten:

enter image description here

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  • $\begingroup$ Where'd you get the snazzy Shift-Ctrl-Alt keys? $\endgroup$ – bertmoog Jun 28 '17 at 15:43
  • $\begingroup$ +1 btw on Alt-S, didn't think about it $\endgroup$ – bertmoog Jun 28 '17 at 15:44
  • $\begingroup$ @bertmoog It is keymon: youtube.com/watch?v=h5sEcupUJqI $\endgroup$ – Crantisz Jun 28 '17 at 15:45
  • $\begingroup$ Ah I see, Linux $\endgroup$ – bertmoog Jun 28 '17 at 15:49
  • $\begingroup$ Wow, I tried this on Suzanne. It was horrible. But it is definitely a good answer to THIS question. $\endgroup$ – Mutant Bob Jun 28 '17 at 16:50
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  1. Add a torus and don't touch it (don't scale rotate, move etc.)

  2. As soon as the torus appears, a menu willl show in the left side in which you can adjust the parameters such as minor and major radius, number of segments, etc.

enter image description here

Same applies for cylinder and most default shapes.

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  • $\begingroup$ Sorry tacofisher. I should have said I want to transform the torus in edit mode. $\endgroup$ – Barrie Jun 29 '17 at 6:48
  • $\begingroup$ No problem, I didn't know about Alt-S either, so thanks for asking this question! $\endgroup$ – tacofisher Jun 29 '17 at 11:58

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