In Tony Bingelis's book Sportplane Builder on page 40 he suggests a work island for mounting a bench grinder, vice and pillar drill. Other builders have produced them but I have not seen any plans so Simon and I used the same build principle as the EAA 1000 workbench , see previous log entry.
I have sketched the plan we used and it is available at my website
The castors are available from Screwfix and cost more than twice the wood but once locked the island is very solid.
