Dave,
Where do I buy dapping blocks? Hardware store?
Though I've done a lot of model building in resins and plastic, brass/metal is all new. I'm slowly building a tool collection that makes life easier, I think I could use these blocks on many more projects. Would be a worthwhile investment. Plus, I like tools! 
Not a lot of progress to report on the FEF. No parts have arrived and family arrives tomorrow, so it'll be a week or two before I get back to work on it.
