Stacking standoff for RTF series terrariums

These standoffs (aka "legs") allow you to stack the RTF series of terrariums. One goes in each corner on top and the terrarium to be stacked slots on top of that. The bolt through the standoff replaces the 15mm bolt that holds the top on to the lower terrarium. Don't over-do the torque on the screws as the stock tubes they are going into are only 1mm thick at the threads.

The manufacturer makes a set of 20cm legs for this purpose which were too tall for my needs; therefore I made my own. You could stack 2-3 terrariums with these, although caution and common sense should be exercised in the presence of children, other pets, and seismic zones. If you want to experiment with higher loads, hunt down the terrarium manufacturer's stacking advice first. https://www.google.com/search?q=rtf+stacking+kit

You will need to use 4x socket head cap screws similar to these  https://www.boltandnut.com.au/m8-x-1-25p-metric-coarse-g304-stainless-socket-6mm-key-head-cap-screws# to hold the standoffs in place. Should the above link break, the screws I used are m8 x 1.25p socket head cap screws with a length of 50mm. The standoff is designed to be recessed inside the upper terrarium leg, with the screw thread going down into the lower terrarium top. Note that the head of the screw is visible from the outside in the first version of the standoff. A 12mm or smaller head can be hidden by the second version. The picture for the model shows the first version. If you have large screw heads you can blacken the head or get blackened screws if seeing them bothers you.

If you choose to adjust the length of this standoff and therefore the gap between terrariums, adjust your length as necessary via the appropriate extrusion in Fusion. I've included the .f3d file with a screw modelled for convenience of verifying the length that you need. A 50mm screw yields an approximately 40mm spacing.

I've shared this with a non-commercial tag as they are loosely based on a commercial product.