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The stainless steel corner clamp from the Reddit clip slips over a joint, locks two boards at a right angle with one twist of the knob and leaves both hands free to drill. Here is why we rate it.
Our verdict: yes, here’s why
- Perfect right angles, every time. Wind the knob in and the boards are pulled tight against a fixed 90-degree face, so the corner stays square while you work.
- Both hands free. Once it is locked on, you can glue, pin or screw the joint without the panels slipping.
- Drill straight into the joint. The open-sided version in this pack of two leaves the corner exposed, and a closed box-style version is on the same listing.
- Handles a wide range of boards. The seller says it takes boards from about 6mm to 35mm thick, and from 16mm to 25mm when the two boards are different thicknesses.
Who it’s great for
- Anyone building flat-pack, shelving or cabinets on their own
- Makers of drawers, boxes and picture frames who want crisp, square corners
- A practical Christmas gift for a DIYer
Good to know
- It is a simple folded steel body with slotted, sliding jaws and a single threaded knob, so there is nothing to charge or set up.
- Pair a few clamps together for larger cabinet carcasses so every corner is held at once.
- The clamp in the clip carries a different brand stamp; this listing is the same stainless steel design.
Want the full story and the original clip? Read our original find on the viral corner clamp.
Check today's listing on Amazon UK
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