Craftsman Stud Extractor

The Craftsman Stud Extractor, model CMMT98366, is designed to simplify the process of removing studs from various engine components. This tool is particularly appealing due to its chrome-plated finish, promising durability and resistance to corrosion, and its compatibility with fasteners sized 6-19MM. However, after extensive use in my workshop, my experience with this tool has been a mixed bag.

Firstly, the build quality of this stud extractor leaves much to be desired. Upon unboxing, I noticed several blemishes and pitting from corrosion that were visible beneath the chrome plating. It seemed as though the body of the extractor wasn't adequately cleaned before the plating process. This oversight could potentially affect the tool's longevity, especially in a demanding workshop environment.

The tool's design includes a clamping wheel intended to bite into the stud, jamming it against the body of the extractor. While the wheel itself is hardened and the knurling on its surface is clean, the overall execution of this mechanism is flawed. In practice, the cam often fails to bite into even the mildest of steels, which is a fundamental issue for a tool designed to grip and turn stubborn studs.

One of the most significant drawbacks of this stud extractor is its bulkiness. In tight spaces, such as an engine bay, the tool's size makes it challenging to position and maneuver effectively. I encountered difficulties attempting to use it on a small 1/4 inch (6mm) thick bolt with a sheared-off head situated in a cramped location. The extractor couldn't clamp hard enough to rotate without slipping on the stuck bolt, leading to considerable frustration and wasted time.

Additionally, the tool's durability is questionable. During my attempts to use it on exhaust studs, the extractor dented the hole and failed to grip tightly enough, resulting in a frustrating experience. The construction of the tool comprises three pieces, which frequently fell apart during use, adding to the inconvenience. The material used in manufacturing the extractor also appears to be subpar, as it bent under pressure and flattened the teeth on the first turn.

Despite these issues, it's worth noting that there are instances where the tool performs adequately. On larger bolts with more working room, the Craftsman Stud Extractor can be effective. Its solid build and weight contribute to its performance in such scenarios, and it can be a handy addition to a toolbox for occasional use.

However, these instances are overshadowed by the tool's numerous shortcomings. The frequent disassembly, poor build quality, and lack of durability make it difficult to rely on this extractor for regular use. The chrome plating, while aesthetically pleasing, does little to enhance the tool's performance or longevity.

In conclusion, I find it challenging to recommend the Craftsman Stud Extractor, model CMMT98366, due to its inconsistent performance and questionable build quality. While it may serve as a temporary solution for larger bolts in less confined spaces, its bulkiness, tendency to fall apart, and inability to grip effectively on smaller, more stubborn studs make it an unreliable tool for everyday use. If you're in the market for a stud extractor, it may be worth exploring other options that offer better build quality and reliability.