I’ve searched this everywhere to find a tool in blender that would scale objects or geometry using actual measurement units instead of a fraction of the original mesh size.
Scale Cage seems to be the most useful and logic tool to do that (as you adjust faces of a boundary box around the mesh, but even so it only uses a percentage of the original size.
How easy would be to shave 5mm fom the top, than 2 from the bottom, or 10mm from one of the sides of the mesh…
(workaround for some situations: use a second object/mesh to sanp the Scale Cage to the desired dimensions around your mesh/object.)
So you want to move the top bottom or side accordingly… then select thos faces and move along the axis. The “distance” will be shown in the top row; you also can type in the distance you want… also moving it “in place” will show up the Adjust Last Operation menu and you can typ in directly.
But see, you will be moving the whole selected mesh towards a direction, not changing the proportion inside that selection between each point in the geometry.
Moving to resize would work perfectly on an unsubdivided cube. As the mesh gets more complex, you want to proportionally affect all the geometry inside the selection.
Imagine this for a more complex part of a mesh, with many points, that you want to scale proportionally from each other based on measurements (let’s say you want to shrink this portion of the mesh 5mm to fit it inside some other object).
You got several suggestion to do so, you just have to do the math. I do not know any app that have such a “scale-to-size” or better “resize-to” function. Mostly you will mark some part an move-it. A linear scale of everthing seem to be “un-natural”… and i do not have to imagine it. If ther is some need for specific sizes then this should be planed before and doenin the first place… or someone has to do some math…
Modo. You can import αν object for example a car and you find that the length of the car is 1500m. You give the length you want the car to be, e.g. 4.23m and the program changes all dimensions proportionally.
So simple.
There will be always nice things in one gadget which is not done in the same way in another one. But it does not help to “complain” about it. It’s better to find out how you do in the other thingy. ( Also: when you want to quarrel over this then think about why modo is now discontinued… ?? But better let’s do better and concentrate on a solution:)
Well… the *Transform-> Dimensions" in blender were build to do this individuallly and they do not have an “apply to other axis” button. But you can change the length (let’s say Y) to what you want and the scale appears in Y. If you now copy tha value (Ctrl-V) and than drag the mouse cursor over X Y Z then you can paste (Ctrl-V) the value to the others.
(I remember also an addon for this but just can’t find it now… something with scale to value or so…)