How to obtain again join the solid after exploding in Autocad?

In lab exercises we usually end up exploding one box and when we try to join it up we get none. Is there any way to join it again?

2 Answers

Modify>3D Operations>Convert to solid
Command: convtosolid (Enter)

one option is copying that cube aside, then delete the exploded one whe don't need, and move the copyed one back after.