The assembly instructions are rather like those you get with flat pack furniture, line drawings and a few lines of text, and are quite simple to follow. You even get the tools (hex keys) you need, though ball ends would have been useful on the M4 bolts.
Some of the parts are supposed to be a specific distance apart however the cast aluminium corner joiners are a little too big to get one quite right. It was supposed to be 56mm but without filing down the joiners it ended up as 60mm, not of any consequence really. Some of these fittings did need a little filing to remove excess material, took minutes to clean them all up.
There are no end switches so you have to ensure the job fits within the useable work space, there do seem to be solder pads (but no pins fitted) to the board where you'd expect so I'm not sure if they'd work even if I fitted a set though I might try it out.
There are the pinouts fitted for an offline controller which should be any generic GRBL unit.
Overall the assembly is very simple and quite obvious though if you get stuck or aren't sure just look up a build for a 3018 machine that looks the same and it will fill in any gaps you might have. I would think that most people could easily convert the box of parts onto a working machine in 2 hours.
Once assembled the machine feels rigid and flex free, it is certainly more than rigid enough for the type of work it is likely to be used for and is robust enough not to fall apart !!
The machine comes with a set of 30 degree v knife bits bits, these will be OK for general and letter engraving but you'll need a set of small mill bits to do much else.
The laser is a 500mW low power unit with manual focussing which is good for surface burning, this can be upgraded if you want to do cutting.
Overall a good and upgradeable machine.
Freek 
