Mounting system for Wall Art Frames - hanging and standing

I love the Framed Wall Art collection from Ken Mills and wanted to make a versatile wall mounting and standing system for the frame. I'm very happy how it turned out. 
https://www.printables.com/de/@nightfallvt/collections/646677 

I modified his frame design. You now have the options to add an simple hanger to the frame and hang it on the wall, You can add a stand to put it on a desk and You can connect multiple frames with nylon strings used for gallery tracks (or filament!) to hang several frames and make a pattern with them. All options work vertically and horizontally.

Like most picture frames You can simply hang it on the wall with a hanger. I designed it to hang on an 4mm screw, but should work with nails etc.
It is printed seperately and pressfits into the frame, some force may be required. Print with 0.2 layerhight.

Or You can place the picture on a desk or shelf with a stand. There is one version horizontal and one vertical. You may want to add a brim for printing these, for good bed adhesion. Like the hanger, the stand pressfits into the frame, some force may be required.

For the two options above, You can use the “Frame no nylon mounting” version of the print files, it has no holes on the side.

The third and more advanced mounting option requires the “Frame all options” print file.
It still has the slots for the hanger and the stand, but You can also hang it on nylon strings (2mm) used with gallery tracks, and connect multiple frames wiht each other! 

I'm not sure if nylon string is the correct word, in germany it is called “Perlonschnur” or “Perlonseil”. While buying some nylon sting for this project, I thought, everyone who will make this, has something very similar already at home, why not use 3d printing filament?
And I have to say, it works very well. It is designed for 2mm nylon string, but I also tested PETG 1,75 sucessfully. If you have stronger filament at home (like nylon), it woulb be even better, PLA is too weak I think.

How to install it:
The frame on top is either mounted on the wall with the hanger, or You can use a gallery track (or a tensioner, see below).
Push the nylon string (or filament) through the frames and secure it with a M3 8mm grub screw from the back of the Frame. 

It can be a bit tricky to align the strings and frames, but it's worth it! :-D

If You connected all frames, but it's too wobbly because weight is so light, You can add tensioners. Screw these to the wall first, then guide the string or filament through them, pull the string and tighten the Screw. I made two versions, one for M3 heat insert nut and one for M3 hex nuts. You'll need M3 10mm screws. There is also a cover for the tensioner.

You can also use the tentioners to mount frames on horizontal strings. Make sure to have good tension on the strings. If You're using filamten, use a strong one. 

Now have fun with all these options, and show me what You did with it. :-D

Modified the Frame, so it can be mounted to a wall or stand on a desk.