i just had one snap on me. It was a maple @ 48'' long. I should have left it alone, I had it tillered good and shooting well, but, I wanted more poundage, so I added another layer of sinew. Unfortunately, as the sinew dried and pulled tight, it snapped the last 5'' of the top limb! It was 1.75" wide. I wish I had read Pappy's response to this post before I built that one! Live and learn! next time I'll go narrow and thicker.