C4 carbide is the hardest but is not typically used in router bits, presumably because it is more prone to chipping.
For most bits, I use MLCS. They have free shipping, which I really like, and I have found their quality to be good. If I order a bit early in the week, I typically have it by the weekend. The only router bits I have broken have been little bits only available with a 1/4 inch shank. The dovetail bit, for instance, that you use with a typical fixed spacing dovetail jig - I believe it is 1/2 diameter (at the tip of the cutting end) with a 14 degree angle. This bit has a diameter less than 1/4 inch where it joins to the shank and can't be 1/2 inch because it would then not go through the 7/16 template bushing. The last one of these I bought was a CMT. It works fine. I would not hessitate to use a Whiteside and might try MLCS's premium brand but I will not use the "lessor" bits for this application since I broke one. For most stuff, the cheaper bits work well for me. This particular bit is pretty inexpensive no matter what brand you get. For panel raising cutters and the like, the cost difference can be pretty big.
Jim
For most bits, I use MLCS. They have free shipping, which I really like, and I have found their quality to be good. If I order a bit early in the week, I typically have it by the weekend. The only router bits I have broken have been little bits only available with a 1/4 inch shank. The dovetail bit, for instance, that you use with a typical fixed spacing dovetail jig - I believe it is 1/2 diameter (at the tip of the cutting end) with a 14 degree angle. This bit has a diameter less than 1/4 inch where it joins to the shank and can't be 1/2 inch because it would then not go through the 7/16 template bushing. The last one of these I bought was a CMT. It works fine. I would not hessitate to use a Whiteside and might try MLCS's premium brand but I will not use the "lessor" bits for this application since I broke one. For most stuff, the cheaper bits work well for me. This particular bit is pretty inexpensive no matter what brand you get. For panel raising cutters and the like, the cost difference can be pretty big.
Jim

Comment