what screws/bolts sizes are required for the mutable designed shruthi cases?
also, what size hex bolts should i be looking for to bolt the control board to the filter board?
thanks. 
- 20mm spacers x 6
- M3 nut x 12 (6 between the boards and 6 between the board and the bottom of the case)
- 15 or 20 mm M3 screw x 6 (bottom) ; 6, 10 or 12mm M3 screw x 6 (top)
- (M3 nut + 12mm M3 screw) x 8 for the case
cheers!
You can also have a look at step 14 of the assembly instructions to get a picture of the sandwich
http://mutable-instruments.net/shruthi1/build/digital
Start by screwing the filter board to the enclosure and build up from there.
double cheers!