Harbor Freight Pittsburgh Corner Clamp Review & Demo: Is It Worth It for Woodworkers?

If you’ve ever struggled to keep your woodworking projects square while assembling them, a corner clamp can feel like a lifesaver. In this post, we’re taking a close look at the Pittsburgh Corner Clamp from Harbor Freight. This affordable tool promises to make assembling drawers, boxes, and frames faster and more accurate — but does it deliver?

Let’s walk through the unboxing, features, and real‑world performance to see whether this budget‑friendly clamp deserves a spot in your shop.

Unboxing the Pittsburgh Corner Clamp

Bryan received this new tool as a Christmas gift. Soon after, we started a project to build a set of nightstands. It was a perfect time to test it out on an active project: building drawers.

Unboxing the clamp revealed a simple, straightforward design. Key features include:

• A quick‑release button for fast adjustments

• Pre‑drilled mounting holes for securing the clamp to a workbench

• A sturdy metal frame designed to hold two boards at a perfect 90‑degree angle

There’s not much to assemble or figure out, making it beginner‑friendly and ready to use right away.

Putting the Corner Clamp to the Test

The real value of any clamp shows up during assembly, and the first test with this tool was to build drawer box. The clamp held the drawer sides securely in place while Bryan aligned the joints and drove screws.

Performance Highlights

• Holds boards square with minimal fuss

• Keeps hands free for drilling and fastening

• Speeds up assembly significantly

• Provides consistent pressure without slipping

Final Thoughts: Is the Harbor Freight Corner Clamp Worth It?

The Pittsburgh Corner Clamp proves to be a surprisingly capable tool for its price point. It’s not sponsored, but it performs well enough to recommend for:

• Beginner woodworkers

• DIYers building drawers, frames, or boxes

• Anyone needing an affordable way to keep projects square

We have used this on several projects since unboxing and didn’t realize just how useful it would become. With its quick‑release mechanism, mounting options, and solid performance, this clamp offers excellent value for budget‑minded woodworkers.

If you enjoyed this Harbor Freight Corner Clamp review, please visit the Woodsongs by Russell channel on YouTube for more tool reviews.

Happy Woodworking!