These are designed to have a wood front attached that matches whatever furniture you're attaching to. The slides are basic groove fit. The rear can either be wood again or printed (depending on max print bed size). The bottom of the draw can be 6 or 8mm ply or something similar.

The stl files are a set depth (width determined by what you attach to) however the f3d file is fully parameterised to allow changes.

A sample rear plate is also in the f3d / stl's (edit parameters to set it's width) as an alternative to using a wooden rear.

The sliders are slightly longer than the drawer, to ensure the draw doesn't fall off when fully extended.

NOTE: Only left side in STLS, simply flip-on-Y to get the right side.

To maximize bed-volume usage, and allow for supportless printing the two rails are printed separately and then joined on. I used heatset-inserts to attached them (and the rear-plate when used) , although CA glue would work fine.

A few sample drawer inserts are also included, again you'll need to edit for size.