What is it?

It is a letter holder for envelopes + content, which allows to place letters vertically to save space and should have enough space for a letter amount of around 1 year of a private person.

Core ideas behind it?

Main goal was to overcome the yearly letter flood as efficient as possible:

• Possibility to store a full letter after reading/or not reading (envelope+paper) and make use of folders with time-consuming unpacking and sorting of the letters completely obsolete.

• Different chambers for different topics to cover all the regular needs: bills, banks, official things, ...

• Enough space for 1 year of permanent storage. In total estimated letters per year were around 40.

• As compact as possible to store in a drawer, therefore vertical letter storage

• Like always: Only 3D printed material, lightweight, avoid support structures and in the end therefore cheap

Why this and not others?

That's the tricky part. Found none with the compact vertical approach, one wall-mounted (https://www.thingiverse.com/thing:604020) and dozens of 1-chamber designs, which did not suit the permanent, sorted, 1-year storage idea (https://www.thingiverse.com/thing:660493). So in the end, the available solutions were pretty far away from my needs.

What is the outcome?

In the end I made my own model, which was already reworked and I think now is "market ready":

• Printing time of around 5h in average quality and speed.

• Material usage: ~55g

• Quite tall structure which may have warping if not sticking properly to printing bed. Printing with raft is recommended.

• Bridges on top, longest one has ~15mm. Although not really long bridge and should not be a problem, make sure your printer is capable to print this, otherwise use support structure.

• Very functional (not the prettiest) design, but is stored in the drawer anyway, so does not need to be pretty :P