I picked up a delta line boring machine a few years back from an estate sale of a small commercial shop. Machine works great but I think the bits are a little dull. They make fairly clean holes but it seems like they are struggling a little to drill and takes some decent pressure to drill the holes. I was thinking of just replacing them but they are like $30 each from delta so it would be nearly $400 for the 13. I then thought about having them sharpened but not sure who does them as they are carbide tipped from what i understand. I just found that Freud makes new bits for $11 each. I think that is my best bet but wanted to see if anyone has used their bits or if I should just have the existing ones sharpened. Thanks