This Simple Upgrade Makes Parallel Clamps Way Better
Parallel clamps are one of the most commonly used clamping tools in a woodworking shop. They’re versatile, strong, and ideal for panels, casework, and glue-ups of all sizes. In spite of how much I rely on them, they aren’t perfect.
The Problems
Parallel clamps feature hard plastic faces. While durable, that material creates two common problems that nearly every woodworker has experienced. First, the hard jaws can dent the workpiece when excessive pressure is applied, especially on softer woods or already-machined surfaces. Second, the smooth plastic offers limited grip, which can allow the clamp to shift during glue-up, requiring extra adjustments and attention.
The Solution
To fix both of these problems, we can add a softer, slightly compressible pad to the clamp faces. This reduces the chance of denting and allows the clamp to hold more securely with less force. The added grip also helps prevent pieces from sliding out of alignment as clamping pressure increases.
The material I’m using for this is rubberized cork sold by my buddy Andy at In-Kleind.com.
- Cut the material to shape. I made a template using this DXF file. You can also purchase a template from us if you like. Both are available in our store!
- Scrape any glue off the clamp head and give it a light sanding with 120-150 grit paper.
- Clean the surface using a solvent like denatured alcohol, lacquer thinner or acetone.
- Apply contact cement (https://amzn.to/4rl6gCq) to both the clamp head and the clamp pad. Allow to dry 15-20 minutes.
- Carefully press the clamp pad onto the face of the clamp. Keep the clamp under pressure for 24 hrs.
A Time Saver: True Grip Clamp Pads
If you want to save yourself a bunch of time, consider purchasing True Grip Clamp Pads.
In the end, the takeaway is simple. Parallel clamps are already excellent tools, but with a small modification to the jaw surface, they become easier to use, more forgiving, and more effective. If you want to improve your parallel clamps and get better results from the ones already in your shop, this step-by-step approach shows exactly why the upgrade works and how it improves everyday woodworking tasks.
The Wood Whisperer is sponsored by Woodcraft!
Looking for more information on parallel clamps? Check out these videos and articles:
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