Aluminum 90-Degree Corner Clamp Kit — Precision Positioning for Every Joint
Misaligned corners are the silent enemy of every woodworking project. Whether you're building a picture frame, assembling a cabinet carcass, or squaring up a box, even a fraction of a degree off can ruin hours of work. The HomeDIYer Aluminum 90-Degree Corner Clamp Kit gives DIYers and tradespeople the confidence to nail perfect right angles every single time.
This 12-piece set includes 4 heavy-duty aluminum corner clamps available in three sizes — 120mm (~4.7 in), 140mm (~5.5 in), and 160mm (~6.3 in) — giving you the flexibility to tackle a wide range of workpiece thicknesses. The die-cast aluminum body delivers a rigid, warp-resistant grip that holds your material firmly while you drill, nail, or glue.
From flat-pack furniture repairs and custom shelving builds to professional cabinetry and picture framing, these corner clamps are the go-to positioning tool for anyone who demands square results on the first try.
✅ Compatible with wood, MDF, plywood, aluminum extrusions, and most flat-edged materials. Suitable for workpieces typically 10–50mm thick depending on size variant.
Key Features
- 📐 True 90-Degree Accuracy — Precision-machined aluminum body ensures a consistent right angle every time, eliminating guesswork during assembly.
- 🔩 Three Size Options — Available in 120mm, 140mm, and 160mm to accommodate different workpiece dimensions and project scales.
- 🧰 12-Piece Value Kit — Includes 4 corner clamps per set, so you can secure all four corners of a frame or box simultaneously for perfectly square glue-ups.
- 🏗️ Die-Cast Aluminum Construction — Lightweight yet rigid body resists flex and deformation under clamping pressure, outlasting plastic alternatives.
- 🔧 Integrated Tightening Screw — Easy-to-operate thumb screw locks workpieces firmly in place without slipping, keeping your hands free to fasten.
- ⚡ Versatile Application — Ideal for picture frames, cabinet boxes, drawer boxes, shelving units, furniture assembly, and general woodworking joinery.
Who Is This For
🔧 Weekend DIYers & Home Improvers
Building flat-pack furniture, custom shelving, or storage boxes? These clamps hold your corners square while you drive screws or wait for glue to cure — no extra hands needed.
💼 Cabinetmakers & Carpenters
Speed up cabinet carcass assembly and drawer box construction with a set of clamps that hold all four corners simultaneously, cutting setup time significantly.
🖼️ Picture Framers & Craft Makers
Achieve gallery-quality mitered corners on picture frames and shadow boxes with consistent 90-degree pressure applied evenly across all joints.
🎁 Gift for the Builder in Your Life
A practical, long-lasting addition to any workshop toolkit — a thoughtful gift for the woodworker, maker, or home renovator who values precision.
Technical Specifications
| Material |
Die-cast aluminum alloy |
| Angle |
90 degrees |
| Available Sizes |
120mm (4.7 in) / 140mm (5.5 in) / 160mm (6.3 in) |
| Set Contents |
4 corner clamps + fastening screws (12-piece total) |
| Total Weight |
1.65 kg (3.64 lb) |
| Compatible Materials |
Wood, MDF, plywood, aluminum extrusions, flat-edged boards |
| Workpiece Thickness |
See variant options |
| Finish |
Natural aluminum / anodized (see variant options) |
| Application |
Woodworking, framing, cabinet assembly, furniture making |
Frequently Asked Questions
What sizes are included in this kit?
This kit is available in three size variants — 120mm (~4.7 in), 140mm (~5.5 in), and 160mm (~6.3 in). Each set contains 4 corner clamps. Select your preferred size from the variant options above.
Can I use these clamps on materials other than wood?
Yes. The clamps work well on MDF, plywood, aluminum extrusions, and most flat-edged materials. They are generally not recommended for round or irregular profiles.
How thick a workpiece can these clamps hold?
Workpiece capacity varies by size. Typically, these clamps accommodate material thicknesses ranging from approximately 10mm to 50mm. Contact us to confirm compatibility with your specific workpiece dimensions.
Do I need all four clamps at once?
For best results when assembling a rectangular frame or box, using all four clamps simultaneously ensures all corners are held square while adhesive cures or fasteners are driven. You can also use individual clamps for single-joint work.
Are these clamps suitable for professional cabinetmaking?
Yes. The die-cast aluminum construction provides the rigidity and repeatability required for professional cabinet carcass and drawer box assembly. They are a practical addition to any trade workshop.
How do I tighten the clamps securely?
Each clamp features an integrated thumb screw. Position your workpiece in the corner, then hand-tighten the screw until the material is held firmly. No additional tools are typically required for standard woodworking applications.
What is the total weight of the kit?
The complete 12-piece kit weighs 1.65 kg (3.64 lb), making it easy to transport to job sites or store in a workshop drawer.
Ready to build square, every time? Add the HomeDIYer Aluminum 90-Degree Corner Clamp Kit to your cart and take the frustration out of frame and cabinet assembly.
