Garrett Hack replies: If I understand your question you are trying to turn your foreplane into a coarse cutting “scrub” plane. Do pull the frog back, but not so much that your iron hits the sole or doesn’t adjust smoothly. You should be able to set the depth for a coarse cut, but the throat is probably not open enough for those thick shavings. Your only choice is to file it open, maybe as wide as 1/8″. Back off the cap iron from the edge too, and shape the iron with considerable camber. I would hesitate to file the mouth of a #605, but not to an older worn Stanley #4 or #5.