IKEA Lack Table Assembly and extensions

Here is my version of an IKEA Lack enclosure for a 3-D printer. There are many out there, but this one is mine. I tried to make things as simple as possible, as few parts as possible and, what I thought, attractive hardware set.

All M4 hardware. Tap all holes needing tapping by hand, slow and back out chips.

The table is rated at 22 LBS, my extensions were designed to hold 20# each, so, don't sit on it, but you can do what you need to with this hardware set.

I decided to make a sep