Well that's assuming it's completely solid and not hollow. Hollow would probably be pretty huge, although the structural rigidity might not be great. Maybe we make a giant obsidian 3D printer and print it at like 10-15% infill.

[–] peopleproblems@lemmy.world 26 points 11 months ago (3 children)

An obsidian 3d print is less crazy than you might think. It's essentially rapidly cooled lava.

Need something to hold the lava, then pressurize it to squeeze it through a nozzle that that has attached cooling units.

[–] ivanafterall@kbin.social 12 points 11 months ago (1 children)

I think you just described a volcano.

[–] starman2112@sh.itjust.works 17 points 11 months ago

We're in luck! They already sell that nozzle!

[–] cram42@lemmy.world 10 points 11 months ago (1 children)

Simple: bucket of lava, bucket of water, repeat.

[–] Sway_Chameleon@lemmy.world 3 points 11 months ago* (last edited 11 months ago)

Grabs a bucket. Quick, to the lava depository!

[–] ook_the_librarian@lemmy.world 3 points 11 months ago

less crazy than you might think

Using a planet for a 3d printer's nozzle still sounds pretty crazy.