www.mcmastercarr.com They got good stuff.

 

mr big g ther is a new product that mac sells that is made from the same material the brown cookies are made of and they are in a circular shape which works really good for making your porting job smooth. As fa as getting to the 90' angle find a makita dealer and they sell an electric die grinder with a small head with a flex cord that will allow u to get into tight spots

 

i found a flex shaft online for a 1/4 inch die grinder....any canadians know where it's available here......thats the **** i was lookin for soo long i thot it dint exist! lol