From Starbounder - Starbound Wiki
Sloped blocks were added as a block type in update 1.3.0.
|Floran :||Floran wantsss to make ssspears out of rusty metal.|
|Glitch :||Eager. I am sure with some elbow grease, this metal panelling could be cleared up.|
|Novakid :||Some 'ol metal panels covered in rust.|