v2 840

Cut it off and fit a proper one!!

Seriously though - whilst your going through the checks, put the small parts in labelled bags - saves a lot of frustration when searching for a particular part no. later on. Make haste slowly, and IMHO you would do well to do a almost complete mechanical assembly before starting the wiring.

There a plenty of words of wisdom buried in various forum messages, and Rory (Stoney CNC) has some excellent videos relating to the mechanical adjustment of the machine - well worth spending some time reviewing those.

The 840 is a big machine, and it is most important that it is mounted on a stable flat surface before you set up the Y-axis mechanics. If your budget will stretch that far, get a T-slot base, it does wonders for machine rigidity.

If you have problems during build - pose them on the forum, lots of experienced and clever people there who will be glad to give advice.

Peter.