Ok, it took me quite a while to assemble it, I'm not gonna lie, I wasn't prepared for that many screws LOL, but hey, it was easy enough if you can follow the TEXTLESS Instruction Manual!!!!, anyways, assembly apart, it worked perfectly right away, no trouble at all, I haven't tested with every material, but i made a small Plastic carve with 2 of the demos they included on the MicroSD and well, it is quite precise, no complaints about that, but For Innos!, put some text on those Manuals, also, why did you forgot the electric assembly part it goes as far as telling you to mount every metal piece but the logic board connectors i was able to "Assume" what went where but I'm telling you, some other people may not and would take 1 extra page top, also i had to wear away a little bit the drill itself because the "5mm" thingi that holds the blade didn't fit at first, i saw a video where the guy just slide it easily, but was not my case, anyway, as I said, assembly apart, this thing works amazingly well and it looks so nice next to my 3d Printer, tho I will have to set them apart because of the debris.I will still give the 5 Sars because the product itself is worth them.
John Jefferies 
