Hold Alt to ignore collision when building with the Hammer or block items.
Default Key - Alt (Not customizable for now)
Pipes don't connect when placed after blocks so the pipe network must be built before being covered by other blocks.
Seems like saves are stable with overlapping blocks, but I would still backup your save in case things like overlapping pipes aren't handled gracefully.
Can be unloaded without breaking your builds and overlapped objects will stay overlapped.
Description last changed on 2020-10-31