hi and welcome.

the main limitation with that machine are the unsupported rails and the low power of the spindle motor. its ability to machine aluminium will be severely limited as its not rigid enough to do anything more than very light cuts, think engraving rather than machining. also, while the resolution might be .005mm the accuracy wll be nowhere near that. its good enough for making pcbs or engraving plastic coated aluminium panels or cutting balsa or softwood or plastic parts for model aircraft or doing simple signwork in mdf as examples