Im trying to use Proportional Editing. I don't have a 3 button mouse. Is there a way to modify the field of influence without having a scroll wheel? I already have "emulate 3 button mouse" and "emulate num pad" turned on.

Update: Turns out, the Apple Magic Mouse that Im using does allow a scroll function if you swipe it down the middle. So I am able to get the functionality I am after. Thanks everyone for your suggestions.

  • $\begingroup$ Im on a macbook air, and the trackpad just work like spected with 2 fingers gesture. Also, if you have a wacom with touch you can also do the gesture of the 2 fingers. $\endgroup$ – tyoc213 Jun 12 '15 at 4:31

Use the Page Up and Page Down keys to adjust the circle of influence.

Proportional Edit

  • 2
    $\begingroup$ Im using a Mac with the small keyboard. (Makes most key commands a little challenging with 3D apps. : ) ) Unfortunately, there are no Page Up Page Down keys on this keyboard. I did however discover that the Apple Magic Mouse that Im using does allow a scroll wheel type of function if you swipe it down it's middle. So I think Im all set. Thanks. $\endgroup$ – Thomas Bricker Mar 10 '15 at 13:33
  • $\begingroup$ @ThomasBricker Could you please click the check mark under the voting arrows to show this as the correct solution? $\endgroup$ – VRM Apr 14 '15 at 18:10
  • $\begingroup$ @ThomasBricker fn right and fn left are your page up/down keys. $\endgroup$ – Wildcard May 10 '19 at 23:41

There is a workaround, but it isn't terribly convenient:

After you've completed the action, in the tool operator, which can be found in the tool bar T or by hitting F6, you can change the Proportional size.

enter image description here


I'm using blender 2.79. None of the above worked for me, here's what did: left click and drag until proportional circle appears. Keep left button held down, click fn + pgUp/pgDn. Also note that under user preferences I had emulate 3 button mouse selected.


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