About this 3D model

A design of shoes, quite wel modellet of scanned. I printed this without problems in very small scale (15mm long) But since it is only a shell, that could give in larger scale some problems when slicing. I printed them with: https://www.goedkope3dfilamenten.nl/basic-pla-bruin/ for a marquette (150 pair) , but unfortunately don't have anu photo's of them any more