As mentioned before, a clever way for DIY 45 storage boxes are: Using obsolete election posters! Those made of twin-wall plastic.
Here’s a little cryptic step-by-step movie how i did that, but you sure can use other techniques or constructions like maybe fixing the construction with rivet bolts or just wrap it in gaffer tape if you like…
The 45 storage box that also can be used as the stiffening inlay for the perfect 45 bag. See measurements in cm below
