Originally Posted by duboman
.055 is definitely too large a gap to be worthwhile.
My barley crusher is set to .035 and I achieve 82% mash/lauter efficiency consistently in my set up. I use a copper manifold in my tun and stuck sparges are not an issue. If you are concerned then go with the .039 as that is pretty standard and if you want you can add some rice hulls to the mash to eliminate the concern of a stuck sparge
agree with above, have my B.C. set at 35-36 and get 84% eff. use S/S braid no stuck sparges. plus does a good job of crushing wheat, I run the wheat thru first, then add to uncrushed grains and run everything.