Finally I have being able to make a start...there is a slight change of plans
 to the original design. I will be making a standard 2 player vertical cocktail
 cab with either a 48-1 or a 60-1 jamma board installed. I will probably
 do the 3 sided on another date...we will see how this one pans out.
 Anyways I started on the base & cut out a 120mm hole with my jigsaw...this with be for 
 my multicolour fan I bought off Ebay for 1p.
  It was far easier than I thought to be honest...& I cut just inside the line
 for a perfect fit when sanded. 

 Next I cut out the base vents...this was a bit more tricky & time consuming
 as they are plywood opposed to 3/4 MDF. 

 They are a bit wragged at the moment but I mocked up the positions on
 the up-turned base. 

 Now for some sanding...more to come later...
 P (UK)