This is a very simple model to print. 

There are no interlocking parts and the print time is vastly reduced to about 30 minutes by using 3mm diameter bamboo BBQ skewers rather than printed spikes.

They are a push fit depending on your printing tolerances. I used a Bambu Lab P1P.

If a little slack then glue in place although the skewers usually swell a little to make an interference fit.

This also means that you can trim the skewers to any length required (mine are 25cm).

The base is 240 mm long by 15 mm wide. I used cable ties to fix then to our terrace metal guard rail  

The current version, V12, has stronger spike sockets and pre-drilled 5mm holes at either end.