Hi Andrew,
Check out this link to Brian Meek’s website. He specifically made a
project of recording this very process. Note that the details of the
conversion may vary according to your needs and the desk you use as
fodder for the conversion. Be sure to look through his website for
other useful projects and processes.
http://alberic.net/Toolbox_Index/FrankenBench/FrankenBench.html
Mike Edwards
College of the Redwood