Square Gallery Wrap

I saw a picture framed called Gallery Wrap on the Youtube, and I thought it could be made with a 3D printer, so I made it!150x150mm size square gallery wrap. ※The photograph/picture paper you are using must also be thick so that it does not tear when assembling the frame! (Example: used in the photograph, it is thin and torn)※Recommend a stapler pin that fixes the corners. I tried to fix it with a printout, but I couldn't make a stable pin shape because the required size varies depending on