I'd like to say that I stayed an extra night, just to bother the blockade. But I did no such thing. I had my sandstone blocks, alternating them in the System Construction module to ensure the rough edges were smoothed out.
Incidentally, I'm not sure if it's just my System, but don't try cutting stone; it splits, but not smoothly or straight. Lesson learned.
Yes, I suppose the Guild of Masons and Bricklayers will survive another generation, not that there are enough working Systems to oppose all the guilds at once. If there are, I'm sure a majority of them are operated by Guilded members.
Because anything else would have resulted in an economic overturn long ago. The workings and failings of using a System Construction module are well understood.
But yeah, put in a few handfuls of sand and gravel, and it will work on rubbing stones smooth while you sleep.
It's good for grunt work, the sort of thing you'd have an apprentice do for experience. <1 >