The file 'Slide-together Picture/print/tablet Stand 3D Printer Model' is (stl) file type, size is 4.7KB.
This is a 2 piece stand for holding many things upright.
Circular or rectangular, portrait or landscape it should to the job!
It's fast to print if you skip the bottom & top surfaces like I did, the infill can be an aesthetic piece itself.
In PLA, using a 0.8mm nozzle, 0.3mm layers at 15mm/s with 2 perimeters, it takes about 2 hours per piece, so 4 hours total.
The fit tolerance is 0, so you may have to run some sand paper/stanley blade along the mating surfaces. Mine slots in with a nice click and it's a very sturdy friction fit.
When the stand is assembled, the depth that the legs will accept is about 20mm. Deeper frames can still go on, but will sit on top of the hooks and will be unstable (see pic with the thick cross-stitch frame).
In landscape it'll take anything up to A2.
In portrait probably A1 - anything bigger and it'll want to tip backwards.
Due to the weird rotation, how Fusion 360 outputs STLs - you may have to align the parts to the bed - in Simplify 3D it's Edit > Place surface on bed.
Frame_-_Foot_A__02.stl | 6.7KB | |
Frame_-_Foot_B__02.stl | 7.8KB |