I purchased the Creality Laser Engrave Enclosure V2.0 tent enclosure, but the bottom of it leaked a lot of smoke. I created base peices that can snap to the tube support structure (do it very slowly or the clips may break) and then they can be screwed down to a wood platform. You can use the option clips overtop of the seams to help close any gaps.

Each build plate is setup to be printed twice.

When I first used my laser, it stunk up the whole house like a campfire. After upgrading the exhause to a 6" fan and creating this addition base seal around the bottom, I can now use it almost smell free in my home. I can still smell wood burn when it is being used but the smell is gone after it's done and it you can't smell anything outside the room.