You may use a real paperclip for the pin file. 
 
Our wearable Wolverine helmet file is available at https://www.do3d.com/product-page/wolverine-dp3-helmet-mask-cowl-deadpool-3-3d-printable-model-print-file-dp35
 
Please also check the list of 3D printers and supplies that we frequently use at https://www.do3d.com/post/what-3d-printers-and-essential-supplies-does-do3d-recommand.
 
Thank you very much for your support. If you have any questions, please let us know at 
info@do3d.com