Fillet fun

Well i found this trick by accident but still very useful to illustrate to the shop floor where the welding areas are, It is achieved by altering the properties of each section of the construction parts i have not seen it covered by anyone before although it must of been done by someone anyway just a handy little tool to use, Ok it is obvious where the areas on this drawing are to be welded but still usefull for say little hidden areas can not seem to get it to work all the time but still useful, This example is a dipper arm for a twenty tonne komatsu on 80mm pins