The 8 Best Plastic Corner Clamps (2023 reviews)

We know from years of feedback from readers, customers and amazon sellers, what most people want in a clamp. The kinjoek plastic corner clamp is exactly that - it's a simple clamp that hits all the right notes. These are phenominal tools for getting right angles in cabinets and places where right angles are needed. They smell of Chinesium, but not too strong. They can be used outside for the joint as well. These little squares make it very easy to line things up to clamp while making sure it remains square. They really help when working corners and mapping out projects.

These squares may be used in projects other than as clamping squares. They can be used as precise measuring guides. They will keep things true, easy to use.

Why We Like This:

A solid aid for box making
Delivers what they promise

Best With larger projects: Wetols Plastic Corner Clamp

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate clamp. The wetols plastic corner clamp is exactly that - it's a simple clamp that hits all the right notes. This is a standard right angle clamp that is well-built and accurate. It can accommodate most large things including metal tube, steel rod, wood, thick glass, and more. It's helpful to hold the right angle while screwing, nailing, and gluing. It is great as an extra pair of hands for true and accurate corners.

The clamp is easy to use and has a good grip material on the handle. It's great as an extra pair of hands for true and accurate corners. The hinge design allows for it to adjust to materials of different thickness. They are very easy to use, set it and tighten up to hold, loosen to release.

Why We Like This:

Easy to use, great as a 2nd set of hands
Strong metal clamps that are easy to adjust
Excellent for holding pieces together for using pocket screws
Easy to use, durable, and accurate clamps

Best For cabinet maker: Irwin Plastic Corner Clamp

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If you want something that will hold your boxes or drawers perfectly square until the glue dries, then these are for you. This clamp is different than the pony clamp, in that the irwin clamp has a single crank to tighten both sides together. It is composed of composite plastic body with steel screws and can hold up to. It can hold pieces that are not the same thickness and hold such as shelves, not just corners.

This clamp is great for holding parts together for gluing and keeping them at right angles to each other. It is a legitimately tight grip, too. It is very light duty. The clamp is easy to use for its intended purpose and size capacity.

Why We Like This:

Great classic design that holds it's own
Handy to have when assembling cabinets
New and hot release

Best Corner Clamp: WYQYQ Plastic Corner Clamp

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The wyqyq plastic corner clamp should be able to handle its purpose and duties with ease. The Right angle corner clamp is high-quality aluminum alloy die-casting, sturdy and durable, non-slip rubber handle, and comfortable in hand. It allows you to work and make adjustments without having to disassemble and reassemble. It's best to use in combination with a level. The oblong hole can fix it on the workbench. It is perfect for working alone and on big items.

It comes with adjustable jaws and rotating nuts, the single-handle claw can be rotated in both directions, and two wood blocks of different thicknesses can be connected at a right angle. The handle is a bit large and prevents it from holding smaller box sizes of anything less than. It is used to fix wooden corners, welding, framing, carpentry, drilling, dowels, making cabinets, installing furniture, etc.

Why We Like This:

Perfect tool to have for any woodworker
Useful for large projects (think carcass construction) but nothing much else
Well made, lots of metal, plastic on handles to turn easy
Huge time saver and corners are perfect

Best For pucture frame making: Yanzi Plastic Corner Clamp

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These clamps are a game changer when it comes to building them. It is made of durable plastic and strong tension spring for firm clamping. It takes a lot of hand strength to compress the spring in order to place the clamp. It is great for holding corners. You can even use different thickness boards with one set of clamps.

These clamps will hold square for you until you can get screws/nails into the project to hold it. It is easy to adjust once they're on. The tool is perfect for what it can fit. They are small, therefore work really well for the smaller craft projects.

Why We Like This:

Takes a few tries on springs but great
Small but strong wood clamps for carpentry
Good brand reputation

Best For working With framed woodwork projects Of different sizes: Relitec R Plastic Corner Clamp

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The relitec r plastic corner clamp is suitable and reliable and fits well with your daily purpose. It'll be a breeze to create the Precision 90 Degree Right Angle woodwork. It holds a plank square while glue is drying or fixing. It is made of high quality material. The Relitec Positioning Squares feature a high-impact ABS plastic construction that insures optimal Durability and Lightweight.

These are easy to work with, and very functional. It is great for working with framed woodwork projects of different sizes.

Why We Like This:

Perfect 90 degree clamps for woodworking
Lot of satisfied buyers

Best With quick release: Hoigon Plastic Corner Clamp

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The double handle right angle clamp is forged with thick aluminum alloy material, lightweight but practical to last, thus the double handle right angle clamp is easy to carry and use. It makes major adjustments in the jaws very easy. It provides a quick way to adjust the clamp to the size of the wood. It is suitable for drilling, welding, framing, or doweling to make cabinets, boxes, photo frames, canvas frames, aquarium, etc.

The 2 red quick-release buttons on both sides of the corner clamp with quick release are metal-made, which is more durable than plastic one. It is easy to break or bend. If you work with items that maybe a bit small like 14" or a little less these are great to use.

Why We Like This:

Well made and easy to use
A gift for woodworkers, gardeners, mechanics, handymen and diy'ers
Lot of satisfied buyers

Best For Small DIY projects: Jpb online Plastic Corner Clamp

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If you are looking for a reliable clamp for your daily usage, you cannot go wrong with the jpb online plastic corner clamp. This product is like an extra set of hands. It is great for small diy projects. The right angle clamp set has strong flexible springs in each piece and are made of high quality polyamide material, which is reliable and provides durability for long service life.

These clamps are very strong but with limited function in terms of thickness of material you are using it for. These are very useful when tightening or gluing wood boards. For small DIY projects, they work great holding pieces together. It fits boards with a suitable thickness of 5-22mm for.

Why We Like This: