I really like this straight edge/clamp system!I purchased a 36", a 50" and the 99" wide model.The 50 and 90 are perfect to rip a 4X8 sheet of plywood.I purchased th 36" for smaller jobs using the router and powered hand saw.Using this clamp guide is quick and easy and reliable.They provide a dead on straight guide.
Make sure you use the narrower models as a guide and not put a lot of side pressure on them or they will bow ever so slightly.One the wider model this is not an issue.
The reason for the 4 stars?This one didn't work right out of the box.Nothing appeared damaged or out of place.I check it all over very carefully and it just never got a grip.So maybe I got lemon but there is something wrong or missing, or in the quality control in the 36" model.It just didn't work.Thus the 4 stars.It has been returned.
Update:
The replacement arrived and it works just fine,I really like these clamps and find a variety of ways to use.
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All in One Clamp A-36 36-Inch Grip Clamp Guide with T-TrackProduct Description: With the E. Emerson 36-Inch Grip Clamp Guide with T-track, you will experience a rugged, easy-to-use tool that helps you make clean, precise cuts without side shift. Commonly used as a guide with circular saws and routers, this versatile clamp comes with a convenient T-track, adding functionality for use with a variety of tools.
The E. Emerson 36-Inch Grip Clamp Guide with T-track offers:
- A click lock sliding jaw and a scale ruler for precision
- Zytel nylon components for durability
- Compatibility with routers, table saws, drill presses, and shop jigs
Adjust the click lock sliding jaw with a few simple steps. View Video Demo.The grip clamp offers a full range of compatibility with tools from table saws to homemade shop jigs. View larger.Clear, easy-to-read measurements add ease and precision to any task. View larger.Highly Versatile and EfficientWhether you're cutting dados for a bookshelf or simply trimming a door to size, you'll find this clamp a highly capable addition to your shop. Compatible with circular saws and routers, table saws, and drill presses, this tool can even be paired with standard homemade shop jigs. And with the included T-track, you can tackle jobs requiring accessory saws, router guide plates, and stop blocks.
Click Lock Sliding Jaw for PrecisionWith an exclusive no side-shift design, this versatile 36-inch clamp will get your cutting, sawing, and drilling to an expert level in no time at all. With the exclusive Click Lock feature, the sliding jaw adjusts easily and clamps firmly into place to eliminate side play. It also unfastens easily to allow swift adjustments required for more complex projects, helping you to create flawless lines and ensure safe conditions.
User-Friendly Setup Saves TimePraised for its quick, intuitive setup and flawless results, the 36-Inch Grip Clamp saves you time and energy. It is designed with ergonomic features like wide-lever, easy-grip handles, making it easy to work safely and comfortably. And with its clear measurement markings, such as the full-color scale ruler, this tool makes precision work easier, giving you the satisfaction of a job well done.
Weighing in at only four pounds, this tool is built for easy and convenient portability. But despite its lightweight, slender frame, it's also designed for durability, boasting clamping components that are engineered with resilient Zytel nylon, which includes nine-percent glass content. The clamping components are backed by a lifetime warranty.
About E. Emerson Tool CompanyE. Emerson Tool's innovative approach to manufacturing is based on a persistent commitment to improvement. With the company's devotion to quality, it's no surprise that the All-in-One Single Clamp--now on its sixth revision--is E. Emerson's most popular line of straight edge clamps among expert craftspeople and hobbyists.
What's in the BoxEmerson 36-Inch Grip Clamp Guide with T-track
Especially handy for complex projects, the sliding jaw adjusts easily and clamps firmly into place to produce quick, flawless work. Buy Now
A great basic spring clamp and much cheaper than buying them at the local hardware supercenter. Definitely the type of thing that buying a name brand is not necessary. The generic will do the trick.
I just used this clamp to rout a dado in 3/4 inch birch plywood.It held firm and square and made beautifully straight grooves.
I can not begin to describe how well this clamping tool guide works.It is easily adjustable to clamp on any width work piece but, obviously, this one was made to rip 8' sheet material.The guide has three levels of clamping force but the first level is enough to secure the guide so that it will not move during ripping.
This clamp uses the ingenius trigger grip design for unbelievable ease of use. This makes the clamp unbelievably easy to tighten using one hand. A few warnings about this particular product, however: 
I can not begin to describe how well this clamping tool guide works.It is easily adjustable to clamp on any width work piece within 50" or less.The 50" length is great for cross ripping sheet goods (4' wide).The guide has three levels of clamping force but the first level is enough to secure the guide so that it will not move during ripping.
I like these much better than the spring clamps we all use. It exerts more pressure with an easier release than a spring clamp of similar size. Just squeeze to lock it and it stays put. I used a couple the other day to hold a straight edge for routing dado's. I cut 3/4 x 1/2 deep runs with no slippage from the clamps. When I was done with each one I just squeezed the release and went on to the next . Lickety split. Nice idea !
I have been crafting fine cabnitry for many years now. In the process I have used virtually every clamp and strap device on the market. From Jegenson, strap clamps, spring grip, bar clamps (circular & retangular)to the racheting designs. All have particular advantages, but the bestoverall clamp that I have used for wood glueing and wookwrking is the quickgrip. Some of their advantages are ease of clamping and or releaseing themechanism itself. The clamp can also be quickly adjusted using one handassuming that the clamp has been "gross" adjusted to theapproximate size of the work piece.Gross adjustment is a simple onesecond process of sliding the statioanry end of the clamp down the staft tothe approximate size of the work-piece.Equally easy to operate is thequick (hence the name) release button.It provides easy readjustments oftension or clamp position. Both of these features as esential whan workingalone or with a complex assembly that requires pressure while the clamp isbeing applied. The weight of the clamps that I use the most (standard 36and 24 inch clamps) are approxmiatly 2 and 2.5 lbs respectivly. These arethe lightest clamps that I have used given their holding strength. Theyprovide much more holding force than I have ever need for cabinet makingwith no apparent slippage over 24 hours (typ glue cure cycle). Their onlylimitation is their length. They come in standard lengths of 12, 18, 24,36, and 50 inch lenghts. I guess the manufacturer assumes that if you wnatto build somehting bigger than 50 inches, you and prodably a professionaland will have custom holddown hardware of your own...Keith J, San Jose,CA
this is probably the best clamping system I have owned, I have always used Tru-grip clamps and suffered some side play issues, then I decided to give these a shot. They have a unique way of locking down the sliding clamp so as to eliminate side play, these things so not move and clamp absolutely straight, simple and easy to use - don't hesitate to purchase!