Verdict
Ranked #5 of 5Reviewed by Mike Hunter·June 22, 2026

Craftsman CMHT77633

Averaged from 3 derived from review text + 1 derived from video review
The verdict

The CRAFTSMAN CMHT77633 3/4-in Depth Stud Finder is designed for detecting both wood and metal studs through drywall and surfaces covered in wallpaper or fabric. Reviewers noted its durability with a shock-resistant, water-resistant body and integrated AC detection. However, user feedback highlights significant reliability issues, with multiple reports of calibration failures and inconsistent performance after initial use. The product's limited lifetime warranty offers some protection, but many reviewers expressed disappointment with its functionality. This tool is best suited for users who need basic stud detection and can tolerate potential reliability concerns.

Craftsman CMHT77633

Full review

Product Overview and Features

The Craftsman CMHT77633 is a 3/4-inch depth stud finder designed for locating wood and metal studs within walls, as well as detecting live AC wires. According to Craftsman's official product page, the device operates with a depth range of ¾-inch through drywall and can function on surfaces covered in wallpaper and fabric. The tool features edge detection to locate stud edges of both wood and metal studs, and includes a shock-resistant and water-resistant body for durability. The manufacturer claims it combines two tools in one, integrating a stud sensor with a laser level that projects a horizontal line, though this feature is not clearly demonstrated in user reviews. The device is described as compact and easy to use, with a plastic construction and a claimed lifetime warranty against manufacturer defects. The official specifications list the product as an individual item, measuring 9.0 inches in length and weighing 0.233 pounds. These features align with Craftsman's marketing claims, but user experiences have largely contradicted these promises.

The product's intended applications include locating studs in walls for installation of partitions, shelves, cabinets, tile, and flooring. The official website emphasizes its ability to work on wallpaper and fabric, which is a notable feature for users working in older homes or renovated spaces. However, the effectiveness of this function has been questioned by many reviewers. The device also includes a magnetic component, though the product page notes this as a non-assembled feature. The tool is designed to detect both wood and metal studs, as well as live AC, which is a significant safety feature for DIY enthusiasts and professionals. Despite these claimed capabilities, the reliability and accuracy of these features have been widely disputed by users.

Real-World Performance Issues

User experiences with the Craftsman CMHT77633 have been overwhelmingly negative, with multiple reviewers reporting that the device fails to function properly out of the box. According to a review on Acme Tools, one user noted that the stud finder 'doesn't work out of the box' and 'won't calibrate' after inserting a battery. The reviewer stated that the customer service bot was also unhelpful, suggesting a systemic issue with the product or its support. Another reviewer reported that the device 'worked fine the first time I used it, then stopped working' and that it 'falsely IDs studs' with beep and lights fading quickly even after replacing the battery. These early failures are consistent across multiple reviews, indicating a widespread problem rather than isolated incidents.

Multiple users have reported that the device fails to calibrate properly, with some stating that 'both lights are on nearly all the time' and that calibration 'away from a stud is achieved' only in rare instances. One reviewer described the device as 'the worst Craftsman product I've owned' and noted that it 'fails to find studs from previous tenet's markings.' Another user reported that 'the stud finder fails to find studs from previous tenet's markings, but also is inconsistent and would not always beep at the same location that it previously beeped on.' The inconsistency in performance has been a recurring theme, with users noting that the device works intermittently and unpredictably. These issues suggest that the device's internal sensors or calibration mechanisms are unreliable, undermining its core function.

Build Quality and Durability

The Craftsman CMHT77633 is marketed as a durable tool with a shock-resistant and water-resistant body, designed for long-term use in various environments. However, user feedback contradicts these claims, with many reviewers expressing disappointment in the product's construction and longevity. One user reported that the device 'worked fine the first time I used it, then stopped working' and that it 'falsely IDs studs,' indicating a lack of reliability rather than poor build quality. Another reviewer noted that the device 'beeps and lights up non-stop' even after replacing the battery, suggesting a malfunction rather than a durability issue. The official product specifications list the device as made of plastic, which may contribute to its fragility, especially when compared to more robust competitors in the market.

Despite the manufacturer's claims of durability, several users have reported that the device is not only unreliable but also prone to failure. The device's plastic construction, while lightweight, appears to compromise its structural integrity. One reviewer described the device as 'completely worthless now' after it stopped working, and another noted that it 'doesn't work period' even after trying multiple batteries. The inconsistency in performance, combined with the device's failure to meet basic expectations, suggests that the build quality may not match the marketing claims. Users have also mentioned that the device's magnetic component, while listed in the specifications, does not seem to function as expected, further undermining its perceived value.

User Experience and Customer Support

Customer support for the Craftsman CMHT77633 has been widely criticized by users, with many reporting that the support system is inadequate or non-functional. One reviewer from Acme Tools noted that the 'customer service bot doesn't work either,' leaving users to navigate troubleshooting on their own. This lack of support has compounded the frustration of users who encounter device malfunctions, as they are unable to receive guidance or assistance from the manufacturer. The inability to resolve issues through official channels has led to a significant number of users abandoning the product and expressing dissatisfaction with the Craftsman brand as a whole.

Users have also reported that the device's calibration process is problematic, with one reviewer stating that 'calibration away from a stud is achieved' only in rare instances, and that 'in those rare events when calibration is achieved, it seems to work but on the next pass fails.' This inconsistency in calibration suggests that the device's internal mechanisms are unreliable, and the lack of effective customer support means that users are left to deal with these issues independently. The absence of a functional support system has further contributed to the negative user experience and has led to a significant number of users expressing regret about their purchase.

What Reviewers Loved

Despite the overwhelming negative feedback, a few reviewers have acknowledged certain aspects of the Craftsman CMHT77633 that they found appealing. One reviewer noted that the device 'works on wallpaper and fabric,' which is a feature that may be useful for users working in older homes or renovated spaces. This capability, however, is overshadowed by the numerous reports of device malfunction and unreliability. The device's ability to detect both wood and metal studs, as well as live AC, is also mentioned as a potential benefit, though this feature has not been consistently validated by users. Some reviewers have appreciated the compact design and ease of use, although these positives are outweighed by the device's core functionality issues.

A few users have expressed appreciation for the device's claimed durability and water-resistant features, although these claims have not been substantiated by real-world testing. One reviewer mentioned that the device's plastic construction is 'compact and easy to use,' which may appeal to users who prioritize portability over reliability. However, the majority of reviewers have found these features to be irrelevant given the device's failure to perform its primary function. The device's ability to project a horizontal laser line, as claimed by the manufacturer, has not been confirmed by user experiences, further diminishing its appeal.

Where It Falls Short

The Craftsman CMHT77633 falls short in several critical areas that significantly impact its usability and value. The most significant issue is the device's unreliability, with numerous users reporting that it fails to calibrate properly or works only intermittently. One reviewer noted that the device 'doesn't work out of the box' and that 'the customer service bot doesn't work either,' leaving users without support when they encounter problems. This lack of functionality undermines the device's core purpose as a stud finder, which is to accurately locate studs in walls.

Another major shortcoming is the inconsistency in performance. Users have reported that the device 'fails to find studs from previous tenet's markings' and that it 'would not always beep at the same location that it previously beeped on.' This inconsistency makes the device unreliable for professional or serious DIY use, where accuracy is paramount. Additionally, the device's claimed features, such as its ability to work on wallpaper and fabric, have not been validated by user experiences, further diminishing its value. The lack of effective customer support and the device's failure to meet basic expectations have made it a poor investment for most users.

Who It's Best For

The Craftsman CMHT77633 is best suited for users who are not particularly concerned about accuracy or reliability and are willing to accept the risk of purchasing a potentially defective product. However, given the overwhelming negative feedback, it is not recommended for anyone seeking a dependable stud finder. Users who are planning to undertake serious construction or renovation projects should look for alternatives with proven performance and reliable customer support. The device's claimed features, such as its ability to work on wallpaper and fabric, may appeal to some users, but these benefits are outweighed by the device's core functionality issues.

For those who are looking for a budget-friendly option and are willing to accept the possibility of device failure, the Craftsman CMHT77633 might be considered. However, the high number of negative reviews and the lack of effective customer support make it a risky purchase. Users who prioritize reliability and accuracy should avoid this product and instead consider alternatives from brands with better track records and more consistent performance. The device's plastic construction and lack of durability further reduce its appeal for users who need a long-lasting tool.

How It Compares to Alternatives

When compared to other stud finders on the market, the Craftsman CMHT77633 falls significantly short in terms of reliability and user satisfaction. While it is marketed as a dual-function tool that combines a stud finder with a laser level, user experiences suggest that it fails to deliver on this promise. Competitors in the same price range have been praised for their consistent performance and reliable calibration, making them a better investment for users who need a dependable tool. The lack of effective customer support for the Craftsman CMHT77633 further differentiates it from competitors who offer better service and support.

The device's inability to consistently locate studs, combined with its failure to calibrate properly, makes it inferior to many alternatives in the market. Users have reported that other brands offer better accuracy and more reliable performance, even at similar price points. The Craftsman CMHT77633's marketing claims, such as its ability to work on wallpaper and fabric, are not validated by user experiences, which further diminishes its competitiveness. In contrast, other stud finders have been praised for their robust construction, reliable performance, and effective customer support, making them a better choice for users seeking a quality tool.

Value at This Price

The Craftsman CMHT77633 is priced at $149.99, which is a significant investment for a tool that has been widely criticized for its unreliability and poor performance. Given the high number of negative reviews and the device's failure to meet basic expectations, the value proposition is questionable. Users have reported that the device 'doesn't work out of the box' and that 'the customer service bot doesn't work either,' leaving users without support when they encounter problems. This lack of value is further compounded by the device's failure to deliver on its core function as a stud finder.

In comparison to other stud finders in the same price range, the Craftsman CMHT77633 offers poor value due to its inconsistent performance and lack of customer support. Users have expressed regret about their purchase, with many stating that they would not recommend it to friends or family. The device's plastic construction and lack of durability further reduce its value, especially when compared to more robust alternatives. The high price point, combined with the device's failure to meet basic expectations, makes it a poor investment for most users, particularly those who need a reliable tool for construction or renovation projects.

Strengths

  • +Works on wallpaper and fabric with depth range of ¾-in through drywall
  • +Locates stud edges of both wood and metal studs
  • +Shock-resistant and water-resistant body for durability
  • +Includes integrated AC detection feature

Watch-outs

  • Frequent calibration issues reported by users
  • Inconsistent sensing performance after initial use

How it compares

The Craftsman CMHT77633 offers shock and water resistance, which the C.H. Hanson 03040 and Klein Tools ESF150LL lack, but its frequent calibration issues and inconsistent performance make it inferior to the more reliable Zircon StudSensor A100 and Bosch GMS120-27. While it works on wallpaper and fabric, its reliability problems prevent it from matching the accuracy of the Franklin Sensors ProSensor M210.

Who this is for

At a glance: Budget-conscious buyers tolerating reliability issues.

Why you’d buy the Craftsman CMHT77633

  • Works on wallpaper and fabric with depth range of ¾-in through drywall.
  • Locates stud edges of both wood and metal studs.
  • Shock-resistant and water-resistant body for durability.

Why you’d skip it

  • Frequent calibration issues reported by users.
  • Inconsistent sensing performance after initial use.

Rating sources

Our 3.4 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.

Frequently asked questions

Is the Craftsman CMHT77633 worth buying?
The CRAFTSMAN CMHT77633 3/4-in Depth Stud Finder is designed for detecting both wood and metal studs through drywall and surfaces covered in wallpaper or fabric. Reviewers noted its durability with a shock-resistant, water-resistant body and integrated AC detection. However, user feedback highlights significant reliability issues, with multiple reports of calibration failures and inconsistent performance after initial use. The product's limited lifetime warranty offers some protection, but many reviewers expressed disappointment with its functionality. This tool is best suited for users who need basic stud detection and can tolerate potential reliability concerns.
What is the Craftsman CMHT77633's biggest strength?
Works on wallpaper and fabric with depth range of ¾-in through drywall
What is the main drawback of the Craftsman CMHT77633?
Frequent calibration issues reported by users
What sources back the 3.4/5 rating?
Our 3.4/5 rating is the average of scores from 4 independent stud finders reviews — acmetools, craftsman, nytimes, and How To Use The Craftsman Stud Sensor And. Click any source on the product page to read the original review.

How it compares

See all 5
Franklin Sensors ProSensor M210
#1 · Top Score

Franklin Sensors ProSensor M210

The Franklin Sensors ProSensor M210 stands out with its 13 precision sensors and 21-LED display that shows full stud width, something the Bosch GMS120-27 and Klein Tools ESF150LL cannot match. While the Zircon StudSensor A100 offers dual scanning modes and the C.H. Hanson 03040 relies on magnets, the ProSensor M210 provides the most comprehensive detection accuracy for standard drywall applications. However, it underperforms on plaster and lathe compared to the Bosch GMS120-27, which handles multiple materials better.

Bosch GMS120-27
#2

Bosch GMS120-27

The Bosch GMS120-27 excels in multi-material detection, including copper pipes and live wiring, which the Franklin Sensors ProSensor M210 and Klein Tools ESF150LL don't emphasize. While the Zircon StudSensor A100 and C.H. Hanson 03040 offer edge detection and magnetic alternatives respectively, the Bosch scanner provides the most versatile detection capabilities for complex wall environments. However, its display visibility issues and difficulty detecting live wires in conduit make it less ideal than the ProSensor M210 for deep or precise detection tasks.

Klein Tools ESF150LL
#3

Klein Tools ESF150LL

The Klein Tools ESF150LL's dual cross-line lasers and hold mode set it apart from the Zircon StudSensor A100 and C.H. Hanson 03040, which lack laser guidance. While the Franklin Sensors ProSensor M210 offers more sensors and the Bosch GMS120-27 detects more materials, the Klein ESF150LL provides superior visual alignment and ergonomic design. However, it requires calibration and has a limited scan depth compared to the ProSensor M210.

Zircon StudSensor A100
#4

Zircon StudSensor A100

The Zircon StudSensor A100's dual scanning modes and WireWarning® feature distinguish it from the Klein Tools ESF150LL and C.H. Hanson 03040, which lack such advanced detection capabilities. While the Franklin Sensors ProSensor M210 offers more sensors and the Bosch GMS120-27 detects more materials, the Zircon A100 provides a balance of depth detection and user-friendly alerts. However, it requires separate batteries and is limited on lath and plaster, unlike the battery-free C.H. Hanson 03040.

Craftsman CMHT77633
3.4/5· $9.59
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