Longtoke,
They are all different. This one being bamboo both back & belly, I could only take wood off the sides and trap the belly. Glass bows are easier as I remove glass from back and belly first. Recurves are the hardest because of the minimal amount of wood in the limbs. Then if I need more weight reduction, I'll trap the sides. I'm taking these bows to my knife grinder so not just sand paper by hand. Most bowyers will remove up to 5# as it is a liability risk. I've probably done 30-40 bows with out any problems. I'm not recommending this technic...but it works for me.