Quote Originally Posted by njhussey View Post
Picked up a 2200 x 950 x 10 sheet of second hand (holes in the edges) Aluminium from flebay for the princely sum of £52 the other week.
Not fair! I hope it doesn't turn out to be a difficult grade to machine.

Be careful with the amount of Z-travel on the MDF/aluminium machine. Clearly you want to have as small a Z-travel as possible to reduce the deflection from having a relatively weak Z-axis and gantry, but there still needs to be room to change tools. This could be a problem if you need to use drills, unless you buy short drills and/or have a hole in one corner of the bed which you jog the machine to for performing the toolchange.