this might seem like a silly question,,,but I just bought some dado blades and was planning on dadoing some shelves across plywood,,and this is my first attempt at it and it splintered really bad,,,the blades I have are not cheap,,i bought them from amazon and they had a good rating,,and I paid 90.00 for them,,,but the crosscut across plwood was terrible,,so I tried using a palm router and the cut was better but it seemed like a lot of effort on the router,,,can anyone help me or tell me what I was dong wrong,,,thank you