I'm going to be building a couple of bunk bed/desk combinations for my kids out of some kiln dried douglas fir 2x4's and 2x6's. I plan to joint and plane them so they're all the same size and using lap joints. Since the edges will now all be square and sharp I'm going to use a 3/8" roundover bit to ease the edges. I've been using Infinity router bits and saw blades for a while now with great success and they seem to last longer than any I've ever used, even longer than Whiteside bits. I have approximately
950 linear feet of edges to round over and I'm wondering how many feet I might expect to get out of one 3/8" roundover bit. The wood is relatively soft but there will be the occasional knot to deal with. I spoke with the owner of Infinity and asked him about this but he didn't really know how many feet I should expect before the bit was too dull to use. He did recommend using a diamond hone every so often to sharpen the bit but that will only work for so long before the bit is just shot. His recommendation was to buy two of the same bit...Of course! ;~} He seems like a good guy so I don't think he was just trying to sell me more than I need and I think he's right when he says that 950' is a lot to expect out of one bit. Any guesses, (educated or otherwise) as to how long a high quality bit will last in KD Doug Fir? I could just buy 2 bits but at almost $30 a piece I'm kinda cheap. Thanks.Bruce