cardboard shelves

cardboard shelves from up-cycled cardboard boxes.
organize your stuff with up-cycled cardboard boxes in a construction similar to dexion.

assembling time, approximately 1h30m (for 3 shelves)

what you will need to buy (approximately 3€)

bolts
24 x M3x15mm
24 x M3x10mm

nuts

48 x M3

what tools to use

Allen key #2.5mm
cutter blade
drill driver

drill #2.5mm

3d printed parts

12 x inside-column.stl
8 x outside-column.stl
4 x outside-end-column-1.stl

4 x outside-end-column-2.stl

first the cuts
cut the top covers from the rest of the boxes with a blade cutter.

then begin assembling your shelves from lower to higher layer.
the columns you are going to print have two different sides. place the wide bottom side of the outside-end-column with the wide side of the cardboard box (see attached picture).
hold it steady and make a hole with the drill driver. place the inside column with the square side facing down (see attached picture).
the box has 4 sides. 2 of them are thicker than the others.
use the longer bolts (15mm) for thicker sides and shorter bolts (10mm) for thinner sides.
screw with the appropriate bolt each side holding the nut with your other hand.
tighten the bolts alternately, left 1mm space for each bolt.
so the steps are the following:

1. place the outside 3d printed part to the appropriate side
2. make the first hole to the thinner wall
3. place the inside 3d printed part
4. screw (but not tight) with the short bolt (10mm) and place the nut
5. make the second hole to the thicker wall
6. screw (but not tight) with the longer bolt (15mm) and place the nut
7. tighten them alternately

for the other half of the box you will follow the same steps ignoring the step "place the inside 3d printed part" because you already have it.

1. place the outside 3d printed part to the appropriate side
2. make the first hole to the thinner wall
3. screw (but not tight) with the short bolt (10mm) and place the nut
4. make the second hole to the thicker wall
5. screw (but not tight) with the longer bolt (15mm) and place the nut
6. tighten them alternately

optional
you could separate the box(es) into smaller sections with or without printing divider holders stls (see attached photos).
if you decide to print them (it is more stable) you must print the following:

3 x divider holder small.stl
1 x divider holder large.stl

the large piece goes to the side with the hexagon hole.

mark, depending the number and the size of the smaller boxes you want to create and cut the cardboard with the cutter.
(see attached file dividers for cardboard holders.dxf)

Print instructions

nozzle temperature: 210
filament: Prusa PLA
bed temperature: 50
layer height: 0,2mm
perimeters: 3
infill: 100%
infill speed: 150%
solid infill: 150%

you could start from 2 shelves and go as high as the cardboard boxes you have.

for shelves with 3 cardboard boxes (like in the attached pictures) you will need to print the following files:

12 x inside-column.stl
8 x outside-column.stl
4 x outside-end-column-1.stl
4 x outside-end-column-2.stl

if you have mk3s you could use the gcode I have included twice

optional

if you want to place the dividers you could print the following files:

3 x divider holder small.stl
1 x divider holder large.stl

for divider dimensions you can check the following file:

dividers for cardboard holders.dxf