Concave text

[Kruzschev]

Create a cube behind the letters and flatten each side faces of the cube to the other faces of
like this
> http://imgur.com/nriwXcB,SfpnpK7#1
then you just combine both these cube and the letter and then use the cube as a reference
use the cubes face that is behind the latter and use the "put on" command
delete the cube
then you can proceed on your normal procedure

uh you could also try the boolean | subtract/union feature from the manifold labs version of wings 3d, that should speed things up a bit, through it doesn't create all the necessary vertices and connect them like bridge does well atleast a minimum/maximum of 2 vertices connection

that procedure is called block printing afaik,