It is a nice saw mill with a very good price, it helped me cut a few oak logs into fairly nice planks. Unfortunately the cheap price shows a little bit on the quality where I managed to strip and break one of the screws for height adjustments and break one other bit on the second height adjustment bar. Both are replaceable so I just need to find a suitable replacement and it is not a big deal, but the screws could have been a bit hardier. On the other hand they go through aluminum so perhaps they must not be from a harder material?
It would be great if the height adjustment was a bit easier to do, currently you need to loosen up 4 screws, set the new height on both height adjustments bars and tighten the screws back. If you do this often and with a messy saw mill covered in dust the screws suffer.
But again for the very nice price it is a very good product. Just make sure your chainsaw bar is long enough as with 18" (45cm) bar your effective cut would be perhaps 12-13" (32cm).
Cosmin 
Maczek János 
