Quoted from Rody:To install t-nuts without a hammer use a smooth block of wood with a hole drilled though it larger than the intended bolt size. With a bolt of longer length and washer, thread it though the block and the playfield, turning the nut on by hand until it just contacts the base. Turn the installation bolt slowly and with consistent force to draw the nut into the playfield. When fully seated, unthread the installation bolt.
That is a great idea. Thanks for sharing.