This is a very simple model to print.
There are no interlocking parts and the print time is vastly reduced to about 1 hour by using 3mm diameter bamboo BBQ skewers rather than printed spikes. Mine are a push fit but depending on your printing tolerances gluing could be an option.
This also means that you can trim the skewers to any length required (mine are 25cm).
The base is 24cm long by 1.5 cm wide and can be drilled as required for screw fixing. But I used cable ties to fix mine to our terrace metal guard rail but a suitable type of glue could easily be an option.
The author marked this model as their own original creation.