I always inspect a new bit before use and I noticed a potential problem with one of them - an ogee bit. On the interior or center of the cardide cutter, each cutter has a weld only at the top and bottom - the center portion is void of a weld. If only one cutter had this type of weld, I would think it was a defect. However, because each cutter has the same type of weld, which by the way is symmetric and neatly done, it looks to be intentional.
Is there a reason for this type of weld or do I just have a defective bit?