90 Degree Clamping Jig – Shop Tip

By Robert Robillard on Workshop tips

90 Degree Clamping Jig

Woodworking Clamp Blocks – Shop Tip

One thing I always notice when clamping wood is you never have enough clamps and you can always use a third hand. To solve my third-hand problem I use a 90 Degree Clamping Jig – shop tip to help me align casework, assist with dry fitting and glue-ups.

90 Degree Clamping Jig

90 Degree Clamping Jig

Using The 90 Degree Clamping Jig – Shop Tip

Clamping face frames or boxes that meet at ninety degrees I often use a woodworking clamp block assembly jig to keep things square and prevent racking.

Installing a bookcase faceframe

This Clamping Jig resembles a framing square, can be clamped easier than a square and work especially well keeping larger face frames aligned. They work perfectly when clamping corners and help a lot when squaring up to face frames or cabinet boxes.

90 Degree Clamping Jig


Making The 90 Degree Clamping Jig – Shop Tip

Using a framing square I cut these jigs out of scrap plywood.  A circle cut-out and two smaller square cut-outs facilitate clamping by allowing a place for clamps to grab. It also is a great spot for hanging the clamps on a wall.

The inside corner of this Clamping Jig is cut forty-five degrees to ease pressure on the inside of corners, not cause an issue with slightly misaligned parts,  and not cause issues with the face frame or glue squeeze-out.

90 Degree Clamping Jig

Jig Pros vs. Cons of 90-Degree Clamping Jig

The best advantage of these clamp jigs is that their cheap to build out of scrap material. The disadvantage of the 90 Degree Jig is that it can only be used for inside corners. That deficiency got me looking for another solution here’s what I found.

90 Degree Clamping Jig

90 Degree Clamping Jig – Video Tip

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About the author

Robert Robillard

Carpenter / Remodeler / Editor

Rob Robillard is “The Concord Carpenter” Rob is a builder, general contractor, carpenter, woodworker, and editor of Concord Carpenter and ToolBoxBuzz As a General Contractor and carpenter, Rob owns and operates Concord Carpenter LLC. A full-service remodeling and construction company. Rob is a recognized leader in home building best practices and a source for how-to information for building professionals. On this website, Rob covers all aspects of home construction, building science, home improvement, woodworking, remodeling, and some of the best product and tool reviews. Rob is in charge of our Tool and Product Review series - Concord Carpenter Videos where we post all of our tool reviews and video tutorials. Rob approaches remodeling and building construction with a pragmatic and problem-solving approach. He enjoys using his knowledge and experience to help and educate building professionals as well as DIYers on best practices in the construction and remodeling industry. He's a strong advocate for "raising the bar" in the construction trades and promoting the trades to youth. #BeAMentor #Green2Great Craftsmanship, quality, and pride guide his journey on this channel The Concord Carpenter's motto: "Well done is better than well said!" : Read more about Rob

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