ZBrushCentral

dynamesh resolution and size question

hi guys!
have been using zbrush for quite awhile now and just something that i always wondered about.
Dynamesh resolution is basically relative to the model’s size right?
For example, a basic cube:
a 2x2x2cm cube model in dynamesh resolution of 128 would result in a 98,306 poly mesh
a 4x4x4cm cube model in dynamesh resolution of 128 would result in a 393,218 poly mesh

So my current workflow for designing weapons for example:
I would usually block out the main shapes in real world scale 1:1 (just to avoid things being too big or too small when this gets 3d printed for real props production), then scale up the design by 3 times so that the dynamesh density is high enough for details and clean hard surface cuts. When everything is approved, I reduce the size of the ztool by 3 times again, so that it matches back at the real world 1:1 scale.
Is there a way for me to set the units in ZBrush, so that the larger (3 times) ztool becomes the 1:1 scale? so that I don’t need to scale things up and down just to achieve the dynamesh density that I require.

BTW i’ve had cases where my 1:1 subtools are able to dynamesh at high density even at 128 resolution. I’m not sure if it’s a glitch or something, because usually without scaling up, my subtools can’t dynamesh with high enough density. The issue goes on to when I bridge into Keyshot, the model is so large that its larger than the default Keyshot sphere environment. My way of fixing this is inserting my ztool into a default ZBrush ztool (ie: the Nickz_humanMale.ztl). This will somehow fix the weird scale issue and import into Keyshot at an expected size than something crazy large.

hope this makes sense.
thanks in advance!

You might want to check out the Dynamesh Master plugin.
You can set the density with it, and it (sort of) takes care of the scaling for you.

http://www.zbrushcentral.com/showthread.php?177194-DynaMesh-Master!-unofficial-Information-Installation

I’m not sure if this addresses your particular workflow regarding scaling, but I find it invaluable for easily setting dynamesh density.

thx Thor!
Will try add this into my workflow and see if it helps!