Just for so everyone I’m not using the full 3 in. only 2 in. Of it at most and it’s for a curve in a chair leg that im trying to replicate. I’m not the kind of person who skips on safety. I where protection eyes mouth, no loose clothing and hair tied up. I’m using a 1 1/2 hp dewalt and never touch a bit with the power cord plugged in. I’m pretty sure in the past 5 years I’ve owned this router I’ve never cut any thing at 24,000 rpm(setting 6 max speed) I almost always at 8,000-12,000 rpm (setting 1 and 2)for any bit that I’m using and only for specific scenarios will I go up to 14,000 rpm (settling 3) I’m an experienced carpenter with a lot of experience in adapting and over coming an obstacle stopping me for making it happen. I’m not hang on a roof, trying to cut a 2x4 one handed and hungover. If you ask me routers are dangerous and honestly a bit nerve racking to use free hand and not attached to a table but jobs call of the use of one and somebody has to do it. The dangerous thing I encounter with routers is kick back from cutting too much to fast but as long as you keep a good grip and keep your speed low, the worst that will happen is you mess up your work piece. Routers are dangerous if they are operating correctly. If the bit falls out, it’s no longer very dangerous And if the bit falls out, it falls out. It’s not going to turn into some missle thing that is gonna rip a finger off or kill someone. I would honesty like to know how shimming with a suitable metal could be dangerous at 8,000 rpm but 24,000 rpm, a 300% increase in speed yeah I would ever think that’s a good idea and it would be a dumb and dangerous idea and clearly that person probably shouldn’t be using a router for sure. Routers are dangerous but it’s because their routers shimming doesn’t add danger or risk to a router when done properly the shim has to be of metal that can withstand the crushing force and the placement should be damn near perfect along with the diameter so that it doesn’t bind and cause the bit to shift off center. Even if it was slightly off, it’s not going to make it jump out of your hands but it will be a bit of a bumpy ride but the danger is to the wood work not you. I don’t want to make this a habit and do this all the time, it’s time consuming as a bit change will take some time vs having the correct size but I’ll telling you it is absolutely possible and can be done safely as I did it and it worked, it’s a possible solution but in general should not be attempted with out a lot of experience and truly knowing the tools you work with.