Smoothing paste/texture paint/polyfilla?

Morning all

I've been playing with my 3d printer (a basic filament one). I'm still very new at it and need to learn a lot more about the settings.

I'm pretty pleased with how this has turned out, but I'm looking for recommendations for paints or other things I could use to smooth out/conceal the lines on the flat surfaces. It's a ruin, so I'm not looking to make it a smooth ballroom floor. I was thinking something like polyfilla (spackle, I think, for our US friends?), but not sure if it'd stick well, or whether sand mixed with PVA might be better, or whether there's something else entirely that I don't know about which would be better?

The goal is to end up having it end up with patches of flagstones covered in debris etc. so something I could carve lines into for the slabs would be good.

I'm planning on basing it up, with the remains of a campfire underneath, and there's a passageway under the stairs that I'm hoping to put a flickering tea light in, but may need to cut one down, as there's not much room under there.

The ultimate goal is to have the time and skills to scratch build something like this from hand using card, clay, wood and all the good stuff, but for now this is the most achievable way to get something on the table.
 

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You can buy what's called 'filler primer' spray paint, which works for fine layer lines on 3d prints and can then be sanded, but those on your print are probably a bit too deep for that to cover them.

I'd suggest powedered polyfilla, you can mix it thin so it's a bit watery and it will 'slump' into the recesses. Then you can sand it as you want to.
 
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