Re: Just ordered the Multimaster
The older Fein, which I have, does not have the star mount for blades, and as such, can use generic tools from Horror Freight and others. I believe, but am not sure that there is an adapter for the newer Fein that lets you do the same thing: escape the tyranny of the Fein Blade price.
( A'course if your building the blades into a job for folks with 20,000+ Sq ft summer "cottages", you may not give a hoot 
Kevin
This new ship here is fitted according to the reported increase of knowledge among mankind. Namely, she is cumbered end to end with bells and trumpets and clocks and wires. It has been told to me she can call voices out of the air or the waters to con the ship while her crew sleep. But sleep though lightly. It has not yet been told to me that the sea has ceased to be the sea.--Rudyard Kipling