This is a form for creating castle gates, arches and tunnels with sand.
this simply gives you something to pack sand against and creates a clean opening in the sand.
One version has a flange that simulates a stone arch patern. If you want the stone pattern on both sides there is a second form that you can insert in the first one to get the pattrn on both sides.
The other version deos not have the flange.
Pulling the form out is a delicate operation but, take your time, wiggle the form gently as you pull back and you should get decent results. I also suggest pushing down on the form from the inside as you pull it out.
Print with handle side down.
No supports, nothing special.
Enjoy!