Sainsmart's latest cnc is the 3018 PROVer which runs Grbl 1.1, has an aluminium chassis, limit switches, a stop switch and an offline controller.

SainSmart Genmitsu CNC Router 3018-PROVer
https://www.sainsmart.com/products/sa...

CNC Router Bits Value Kit
https://www.sainsmart.com/products/sa...

Amazon.com https://amzn.to/2TlxVFh
Amazon.co.uk https://amzn.to/2SRgqxh
Amazon.ca https://amzn.to/2SSHkoy
Amazon.de https://amzn.to/2vWWbW8

Log Slices
https://www.sainsmart.com/collections...

Settings used to carve the log slice:
Feed rate 400 mm/min
Plunge rate 120 mm/min
Depth per pass 0.5mm

MDF Board
https://www.sainsmart.com/collections...