Is there a way to do a stack of different books? With different spines and covers, etc? Just wanted to know if this is possible
Yes, you can do this with a stack tool. You need Boxshot Professional or Ultimate to stack up different books. Make all the books you want to stack, select them all, right click and select Tools->Stack. Then configure the stack there.
See here for more details: https://boxshot.com/support/boxshot-help/ui_tools_stack.html
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