Ive taken wt. off at least a doz, bows--glass recurves and longbows. I just take it off the edges- a TOTAL of about 3/16" takes about 6lbs off on typical bows. Takes me about 30min. Just go slow,--take a little off both limbs, string bow,check tiller--Repeat. Ive never had a prob. w any bow I did this to. I just did one a wk. ago--this one was a longbow which was a pretty narrow design to begin with and I wound up taking a full 1/4". Now the bow is only 7/8" at the fades and 7/16" at the tips. It reduced the bow from 62# to 52#. This is the most Ive ever stretched the "envelop" Ive put 100arrows thru it. So far so good--but the juries still out on this one.