The latest advance in table saw safety is a feature that stops the spinning blade when it senses the presence of tissue, such as a finger or forearm. A company called SawStop was the first to offer this technology, and currently, it holds the exclusive right to sell saws with this feature in the United States. (Bosch introduced a portable table saw with blade-stopping technology in 2016, but was forced to take it off the market after a successful patent-infringement suit by SawStop.) In 2017, the CPSC proposed a new rule to make SawStop's technology mandatory on all table saws, but that rule is still under review. See the Buying Guide for more information.
To ensure that our runout measurements were accurate, TBB used a Freud calibration plate. Freud manufactures this ground stainless steel plate to a tolerance of ± .0005 inches in flatness across the plate. While TBB does not have a means to measure the accuracy of this specification, we did put this calibration plate on top of a polished granite calibration table and could not shine a light under any portion of the plate or slip the 0.001 feeler gauge under the edge.
In my opinion, the Bosch is the clear winner here. While both of the saws are technically portable, the Bosch’s wheeled, easy to set up stand will get you to work quickly, without the need to keep track of multiple parts and accessories. While the DEWALT is much lighter, that difference is negated by the fact that you will be forced to carry it from the vehicle to where you will be using it, rather than pulling it behind you like wheeled luggage.
You can store and transport the Bosch upright or on either of its sides. In between our tests, we found that the saw neatly stored away on its side on a workbench shelf. On the other hand, the DeWalt can only be stored or transported in its upright position. While it may possible to rest the saw briefly on one of its sides, there is the potential to damage the power cord, plug, or the ends of the telescoping fence rails.
With this saw, it was a very easy thing to plug it on and get started. The included cord is a reasonable length, but you’ll still need an extension cord unless you happen to be right next to an outlet in your workshop. Raising and lowering the blade is a smooth process and we found the mechanism to be nice and stiff, so you can be very precise with your cut depth. Only time will reveal whether or not this stays tight over the long haul, but it seems to be well-made. Mounting the accessories, like the smart guard system is quick. You just raise the riving knife using the release lever. The riving knife locks into a lower and upper position through the use of two sets of pins. In the upper position it is ready to accept the barrier guard, which you can remove from below the saw. It attaches easily with a lever lock and the anti-kickback device can then be placed on the back of the riving knife such that the teeth are set to grab any wood brought forward by the blade. The physical nature of the barrier guard assembly precludes you from placing your fingers anywhere near the cutting surface of the blade. We (and Bosch) recommend keeping this guard on the saw anytime you are doing “through” cuts. All-in-all, the table saw’s included safety features are more than adequate to keep you from encountering any unfortunate accidents. Removing them, or using the tool improperly, however, will considerably raise your level of risk.
RIDGID’s 94-lb. R4510 might not be a saw you want to lift into a truck bed every day, but it’s bound to deliver solid cutting results once you reach your destination. For starters, this saw includes a downright great stand. Step on one lever, and the tubular frame lifts and glides smoothly up into place. The same lever collapses it. It’s sturdy, well-balanced and provides a wide stance to keep the saw from shifting or tipping. Large wheels and rubber tires roll the machine around easily during transport or just to reposition it when set up. The left-most tube is both a working-height handle and side support for balancing extra-long crosscuts. Smart.