This will be 3D printed near you and delivered to your door by May 05
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Edit, lol the first file I upped is 50% lager than it was supposed to be so I have added a scaled version. If you already downloaded sorry for the trouble. It would work for larger items but not the Lthopanes
I scaled it back down and added that file as well as the first one. Simple hook I designed for my Daughter to hang Lithopanes she prints on her window. The hook will hold it on but is printer friendly with out support and is down low on the heart so as not to block any of the picture area. Stick to the window with double sided tape or putty meant for hanging stuff on windows.
I would not trim the tape first. apply a square big enough and then trim the extra with an exacto, that way you don't take a chance of getting oils on the tape. Might want to wipe the glass with acetone as well. As alawys no license regardless of what it says to the right
Enjo