When I first saw the miniature bearing router bits from Toolstoday.com, I immediately knew one job that they would be perfect for – kids’ toys. They often have many curves and tight sections where a normal router bit fears to tread (and often cannot get anywhere near following the twists and turns). A typical fine router bit doesn’t have a bearing, and instead has a simple shaft that is part of the bit, and therefore rotates at the same speed (and for such a small diameter router bit, this can be 20,000 – 25,000 RPM). This quickly leads to heat buildup, and friction burning of the timber. It isn’t too much of an issue with such a small diameter, but the area in contact with the work is always rotating, where I prefer a bearing where the contact point of the guide is stationary.