Pretty straight forward to go from rough cut wood to smooth…. Try going the other way and and a little more thought has to go into it.
I do a lot of work in cedar and I either have it on hand form stock that I Alaskan Milled or get it from a mill down the road, always rough cut.
I recently needed rough cut cedar for a project that I’m working on and it had to be a certain dimension, and you guessed it, it had to be undersized of all the material I had on hand.
I looked on line to see if there were any pointers but pretty much came up with NADA. Of the hints that were out there the suggestions ranged from bandsaw /sawzall pulling the blade against the wood to idiots with grinders and steel wheels (not stainless or brass). All of these had people saying there suggestion was the greatest but no one actually backed themselves up with tips or saying they actually did it and it turned out good.
Anyways… what you need is…
Big Ass Coarse blade….I used a 7-TPI
Since Cedar is such a soft wood I tried a few different blades as well as a few different approaches.
I kept the saw at about a 25degree angle to the surface and dragged the blade with the grain for the length of the board. For a 48” pc. of cedar,from one end to the other took 5 seconds(ish) Each pass worked about 5” of material on a 11” blade. Three passes seemed to do the trick. The material I was using was 12” wide so it took a few passes on each side as well as a few in the center, and thats where the longer blade flexibility comes into play.
I was really very pleased to find that this worked so well, and is pretty quick to do.
Tools of destruction
Angle of attack