When I open a model in mudbox, the brushes are very large compared to the model. I even scaled my model in Max which was about 6cm long by 1000%, but the brushes are still big. In order use them I have to size them between 0 and 2 units, which doesn’t give me much granularity (between 2 and 100 is too big for most tasks).

I tried changing the units settings in Preferences - User Interface to millimeters, but this didn’t make any difference (no change in the brush size range relative to my model.)

In the help it says that one can specify the slider range on brushes, but it’s not clear how to do this.

I figured out how to scale up the models even more in mudbox, but it wouldn’t apply my scale settings to all the selected parts. I had switch from the scale tool to the select tool pick a part and switch back to scale in order to scale up each part. This seems tedious and it means that I will have to scale it all down again in Max.
Surely there must be a way to globally change the units so that all brushes are the right size for a real world scale model?
Any suggestions would be most welcome. Thank you.

3DS Max 2011 64 bit, Rel 13 SP2
Vista 64
AMD Phenom X4 9500 Quad Core 6GB
GeForce GTX 460 2048MB

Firstly, Mudbox will work best when your model is a similar scale to the default models. Try merging in the supplied bas human and see how big it is compared to your model. The base unit scale is cms in Mudbox.

Secondly, scaling in Mudbox won’t help as the model itself is still going to be small internally, it’ll just look bigger. You’ll need to reset the transforms for the scale to make any difference. Ideally reset Xform in max, or freeze transforms in Maya or whatever the local equivalent is, then bring the model into Mud. You can also do the same in Mudbox by scaling the model, exporting it and importing this new file.

Thirdly. You can reset the maximm range of sliders in Mudbox. You set the maximum range, then double click on the slider I think. I don’t have it to hand to test. It should be in the docs.