I sculpted a high detailed model and I want to make an 3D-print from this model. I made my model hollow using the ‘make shell’ option, but I had to convert the model first to Dynamesh to make it it hollow. Well, in Dynamesh I set the silder to it’s highest resolution, but it still takes away fine details and gives some unpolished artifacts and some ‘melted look’ on some parts parts when zoomed in close. Is there another way, is this the limitation of Dynamesh I am facing?
Just duplicate your model to create the inner shell with a lower Dynamesh resolution. 
I don’t understand what you mean. Please explain what your idea is. I want to keep my high details, but make my model hollow. The only way so far I found is to first convert it to Dynamesh, and Dynamesh, even set to it’s highest resolution will remove details and start to add unwanted artifacts.
Your thinking here is wrong. Dynamesh isn’t meant to be the last step, just the step that will get you for forms you need. Subdivision levels are what you actually want to take advantage of. So, with that in mind:
-duplicate your mesh.
-use dynamesh with project turned off to make the mesh hollow.
-subD the mesh, or use zremesher to give you a clean mesh and then subD that. Store a morph target.
-use project all to get your details back. Use the morph brush to help with cleaning up any areas that have errors during the projection.
-clean up your mesh.
-use decimation master to get your mesh to an acceptable file size that your printer can use.
hope that helps.
Dynamesh’s resolution takes the scale of the model into account, so you can also scale the model up a bit if you want dynamesh to use even more points than you’re currently getting. It might also be worth mentioning that you should take the printer’s resolution into account too; you might notice a loss in fine details when you zoom into the model in a 3d program, but depending on the printer and physical size of the print those details might not even matter.
Thank you for helping me out. It did not work, but I write down my steps to show where my mistake might be:
-I duplicate my mesh
-Then turned on Dynamesh with project turned off, then I added an ‘InsertCylinder’ brush while holding the ALT key, and selected ‘create shell’. This made the object hollow.
-I subD the hollow mesh 1 time. I stored a morph tager from this hollow mesh.
-Then I selected ‘project all’. But the final results look not perfect. When I select the ‘morph brush’ and hit ‘switch’ I can paint in the details, but they never get any better than when I just use Dynamesh on the highest resolution. (Even when I scale the model 200% to give Dynamesh more detail). All the extra steps make no difference whatsoever…
It might vey well be that the lost in resolution will not show-up on a 3D-print if it is just a smaller sized print. But when I want to make a large object, my concern is that they definitely will show-up. It seems that every attempt to make a high-res model hollow is sacrificing detail with little errors on the mesh on top of that. It will take a lot of time to clean up.
Please tell me where I went wrong. Any other suggestions to retain the exact same detail level when making a model hollow?
Take a look here if you want to try another solutions
http://hazardbrush.blogspot.com.es/2014/01/meshmixer-la-ultima-herramienta-de.html
Also Dynamesh Master plugin could help to keep the resolution when dynameshing
http://www.zbrushcentral.com/showthread.php?177194-DynaMesh-Master!-unofficial-Information-Installation
About your piece. I don´t think the mask for the face will work if it´s not merged into the face topology. You need to consider thickness for the actual printing size.
Thanks for your help, I will dive into this! Especially the DynaMesh master plugin looks promising. I am missing just resolution as the standard Dynamesh setting is max 2048, I think if I can set it higher I can keep the quality I am looking for.
I tried the DynaMesh master plugin and it does not result in any better quality than the ‘standard’ Dynamesh’ option. Quality does not get any better than the max 2048 resolution. I am trying for days now, looking for all sorts of solutions, but I just don’t understand why I can’t make a high-detailed sculpt hollow without loosing quality and details… I want to keep the exact level of quality I have. 
Very frustrating.
I am working out a solution in Blender to make it hollow, with the help of their Solidify modifier to add wall thickness, but this option intrudes/extrudes my object… Not sure how to solve this.