My flute blanks are 1 1/2 by 1 1/2" by 34" I could take just enough off to level it out so I could use them..I guess if you had a jointer you could do it that way...never used one even though I have one on my Delta Multi tool. I was thinking some kind of hand plane to just remove enough of cup or warp from the ends to make it usable. I ran into a need to do this weekend and these blanks are sort of on hold for right now. Open to all suggestions! Thanks in advance! Just a good user plane may be the deal...Dont want a high dollar one ..just something to do the job..