Arm- hand model
I found an arm-hand model that I need to download and print. But I need to fill it with some material in the inside so I need it to be empty (hollowed), is your models satisfy this condition? Thank you
You'll need to download the model and see if it is hollow.
If it is solid, there is no reason you would not be able to hollow it out for your 3D printing needs.
If you need help making it hollow, you'll want to post a link to the file, and give the required details like wall thickness. It should not take long to make the part hollow.