However, what are the main complaints?

The main complaint is the weight (40+ pounds). As one reviewer mentions, it's heavy for him since he's older but goes on to say that this should not affect younger people.

Another reviewer mentioned that the jaw horse manual has tiny print, but it ended up not being a big deal as the jawhorse is pretty simple to set up and use.

Other points to consider from the reviews:

• In order to hold a 4' sheet of ply you need to buy an additional accessory.
• According to one reviewer, the Rockwell Jawhorse can be cumbersome to setup and breakdown, but it does the job quite well.
• The 3rd leg can be tough to secure at times.
• The Jawhorse could be more stable if it had 4 legs instead of 3.

THE MANUFACTURER RESPONDS

One reviewer went on in depth about his concerns about some of the parts being made of plastic. Rockwell Tools actually read the review and took the time to reply. Here is their response, posted on Amazon:

"A word from the designers.

As part of efforts to keep improving our products, we regularly read the reviews left by our customers, apart from anything else they can be a great source for new ideas. Sometimes we think it is helpful to respond to customer concerns, hence this posting.

Barry of Hartsburg, Missouri is concerned by some plastic parts, I'd like to offer some reassurance.

The Jawhorse is constructed from a variety of materials, steel, cast aluminum, urethane rubber and, yes, plastic. Each material has it's advantages and disadvantages, the choice is primarily down to suitability rather than cost.

The plastic parts are mostly in fact glass filled polyamide (nylon). This material offers excellent toughness, durability and a degree of self lubrication. This is why it's great for parts which have to slide freely without squeaks and scrapes, like the lock switch and rear leg blocks. It's also gives us much more freedom in the part shape than say a steel pressing (no sharp edges either). Best of all glass filled nylon is exceptionally strong.

During the development process, we loaded Jawhorses to destruction (don't worry, it requires much more weight than anyone would ever be able to load onto it), in no case was it ever a plastic part which failed. We also subjected each moving part to literally tens of thousands of cycles to ensure they would not fail.

So go ahead, use your Jawhorse, it can take it!"

Overall conclusion:

We are confident in giving the Rockwell Jawhorse our highest recommendation.