I was asked for a "cubic point stone" because of my rough ashlar. I didn't know, what this should be - so I asked: A masonic symbol taken from the Scottish Rite.
It's simple geometry - so I drew it - and printed a small version - scalable to your needs.
There is one STL as a unit and two more with separate parts.
pyramide.stl | 384.0B | |
stone_cut.stl | 784.0B | |
stone_with_tip.stl | 984.0B |