Is it possible to convert Deore Crankset FC-M612 to single speed? I would like to change this crankset to singlespeed, it has 96 BCD so I was thinking to order bash guard replacing the 40t chainring. The bashguard is this one http://www.wolftoothcomponents.com/products/96-bcd-bash-ring-for-shimano-compact-triple . Is it possible to remove the smallest 22t chainring to virtually have a single speed crankset? Thank you for your answers
Yes, it is possible. Just unscrew the bolts holding the smallest ring.

However, the chainrings in double and triple cranks are designed for easy shifting. With single chainring, it's a good idea to change the ring to one that has been designed to keep the chain on. So-called narrow wide chainring is one design to accomplish this.