Animate mesh size change I have this cylinder which I want to get longer (z size) over a certain 50 frames. However, when its size is say 20 at frame 1, then I create a keyframe at frame 50 and change its size to 20, then its size at frame 1 changes to 50 to. How can I get it to animate going from frame 1 to 50, getting longer? Thanks in advance.

I can't upload pictures, so here's a drawing of what I want:

frame 1:

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frame 25

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frame 50

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You have to create a size keyframe on Frame 1 at size 20. Then when you move to Frame 50, scale it up and add a new keyframe, you'll get the scaling animation working correctly.

In addition, if you want the scaling effect to be more even you can also switch into the Graph Editor and change the keyframe interpolation from Bezier to Linear.