I think body is selected, but everything is shaded (not active) in "smooth window".
67% of original size (was 755x170) - Click to enlarge

You have to select the mesh to use the "Auto Smooth" function in 3DxChange, if you have more than one mesh the "Shift Select" all of them.





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Make sure that you have the Body selected in the Scene Tree, and Weld Vertex checked in the Normal tab. You can increase the amount next to the Auto Smooth box.

67% of original size (was 755x170) - Click to enlarge




Gerry

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System: Win 10 Pro (21H2), Asus X99-E WS, CPU i7-5930K -3,5 GHz, 32 GB DDR4 2666-16 RAM, NVidia GTX 1080 Ti GPU - 11 GB VRAM(Driver Studio-536.99), Samsung 850 Pro 512 GB SSD, 6 TB HD storage.

I already founf this https://www.reallusion.com/iclone/Help/3DXchange4/PRO/Auto_Smoothing_Mesh_Nodes.htm , 
but here "auto smooth" is not active:
67% of original size (was 755x170) - Click to enlarge

If there is any "smooth" button please let me know. 
In iClone is "realtime smooth", but it looks to work only in iClone.

3dxchange has smoothing in the right menu "normal" section
i imagine 3 other people will post the same thing, so disregard my post


.

If there is no option to make it smoother then I have some option:
Import OBJ to blender.
To see a mesh switch to EDIT MODE.
67% of original size (was 755x170) - Click to enlarge
Look at MESH TOOLS on the left.
ADD: subdivide
DEFORM: smooth vertex

to see an effect you can switch to object mode and switch between smooth and flat shading (flat is the REAL one):
67% of original size (was 755x170) - Click to enlarge
You may repeat subdividing and smoothing vertex
Export to *.OBJ

Do you know a way how to do it in iClone?

Well guys, I found nice way:
Create character .
Open in iClone.
press "N" - > adjust pose bones
Content Window->Motion->Custom
Animation Custom->Motion
Press"+" , add name to your new POSE.
____________________________________
Open in  3DXchange
Press "N"
Load Pose
Export OBJ

Still don't know how to improve mesh density
67% of original size (was 755x170) - Click to enlarge

Thanks all of you :-) 
I will try, but I'm happy this is possible.
What with quality? I mean mesh density. Is it possible to make it smoother?
67% of original size (was 755x170) - Click to enlarge

i didn't try that scrubbing through the timeline.:crazy:
that is a big time saver, thanks.


.

The only way I know of is to load your character in iClone then select to edit your character in 3DxChange.

Import an animation and find the pose you are happy with by scrolling through the play head.


Then export it as an obj, and then if you load that obj into 3DxChange you'll see that it saved in the pose you had at the time you exported the obj.






I don't know if 3D printers can use obj files but this is the only way I know of to get a saved character in a selected pose.


Dell XPS 8900, Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz, 3408 Mhz, 4 Core(s), 8 Logical Processor(s), 16 GB RAM, - 4 GB GeForce GTX 745, NVIDIA compatible.
Acer Aspire V Nitro Laptop,  2.5GHz Intel Core i5-7300HQ processor with 6MB cache,  256GB solid state drive, 16GB Ram,  4 GB NVIDIA GeForce GTX 1050 Ti graphics.