Best Corner Clamps of 2021: Buying Guide

Corner clamps are one of the handiest tools a woodworker could ever have. Whenever you’re making furniture or fixtures, a corner clamp will allow you to make perfect 90° connections between boards every time.

With the right set, the corner clamps can be used to hold any board of virtually any size in place and keep them that way during the entire gluing and/or screwing process.

Best Corner Clamps
Corner Clamps

Because corner clamps are so versatile and so sought out, there’s an infinite number of clamps available.

Although the wide selection of corner clamps makes it easier to find a pair in any hardware store or online shop, this also makes shopping for a high-quality, ultra-reliable, perfect-90° corner clamp a bit more than confusing.

We’ve filtered through hundreds of different models to find Mr. Right-Angle Corner Clamp for you. Any of these could be of tremendous help in your next woodworking project.

Corner Clamp | Bestseller

Our Recommended Corner Clamps in 2021

7) Woodworking Clamp Tools with Adjustable Swing Corner

You can use these woodworking clamp tools for just about anything. Carpentry, welding, framing some photos, simple D.I.Y. woodworking projects – along with so much more – are all possible with these corner clamps.

Beyond that, these corner clamps are inexpensive, durable, and long-lasting. You cannot go wrong with a purchase.

Corner Clamps, 90 Degree Right Angle Clamps, 4PCS...
  • ACCURATELY SET FOR EVERY RIGHT ANGLE: Whether for carpenting, wood-working, welding, photo framing or DIY use,...
  • TWO ANGLES, IN ONE'S ELEMENT: Not only for 90 degree angles, but also for 45 degree saws. For boards with a...
  • A GOOD LIFE IS NOT THAT EXPENSIVE: Attempting to build your own ideas in furniture! Stainless Steel Spring and...

6) CAMTOA Corner Clamps

From CAMTOA, we have a four-piece set of corner clamps. Each one of these corner clamps is sturdy, easy-to-use, and reliable.

You can use these corner clamps for just about any simple woodworking project. But, for thick pieces of wood, and more elaborate projects, these corner clamps may not be ideal. If you need something inexpensive and effective, though, they’re great.

CAMTOA Corner Clamps,4Pcs Adjustable 90 Degree...
  • 【Adjustable Clamps for Woodworking】90 degree clamps load with strong spring,fit for boards with a...
  • 【Easy to Use】4 Pcs woodworking clamps sets can be operated with single hand.It allows you to open this...
  • 【High Quality】The clamps for woodworking are made of good quality of material and it is durable enough to...

5) AFAKE Right Angle Clamp Corner Clamp

From AFAKE, we have a right angle corner clamp. Due to being made of a premium aluminum material, the corner clamp is very strong, and can withstand plenty of wear-and-tear.

You can use this corner clamp on more than just wood; thick pieces of glass, steel beams, and metal tubes are all easy to clamp with this tool. As a result of this versatility, you can use this corner clamp for tasks such as welding, drilling, framing, woodworking; and many others.

AFAKE Right Angle Clamp Corner Clamp for...
  • Durable right angle clamp, made of premium aluminum alloy die-casting material. Allows two wood block of...
  • Maximum clamping range is approx. 2.68in/68mm; jaw width: 3.74in/95mm; jaw depth: 1.4in/35mm, can clamp...
  • Rubberized single handle with adjustable rotary jaw to align and hold work pieces precisely. Solid and...

4) TACKLIFE Right Angle Clamp

From TACKLIFE, we have a simple right-angle clamp. As a result of this right-angle clamps design, you can use it for many years, without any problems. That, and the design is comfortable, making for an easy experience.

Beyond that, this right angle clamp offers everything you would expect such a tool to offer. Nothing is unique, but it all works very well.

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3) C CASIMR 90 Degree Corner Clamp

From C CASIMR, we have a four-piece set of 90-degree corner clamps. You can acquire these clamps for very little money. But, despite their low price, these corner clamps are reliable and quite useful.

By making use of these corner clamps, you can perform a variety of small woodworking projects. For things like building small items, or making art, these are perfect. For larger projects, though, they aren’t particularly ideal.

C CASIMR 90 Degree Corner Clamp, 4PCS Adjustable...
  • ADJUSTABLE SIZE - Fit boards with a thickness of 3/16" - 3/4" for 90 degree corner and T-joints, also apply to...
  • SMOOTH STRONG SPRING - High spring tension to keep boards in place when screwing or gluing them together
  • SINGLE HANDED OPERATION - It allows you to open this clamp with one hand,and hold workpieces together with the...

2) WETOLS Angle Clamp

From WETOLS, we have a single 90-degree right-angle clamp. The strength and durability of this clamp is notable. You can easily clamp a wide variety of different objects – sheets of glass, steel rods, metallic tubes – with tremendous ease. Because of this, you can use this clamp for a multitude of different purposes and projects.

WETOLS Angle Clamp - 90 Degree Right Angle Clamp -...
  • 【Trustworthy Quality】:WETOLS 90°right angle clamp is uniquely prepared with the aluminum alloy...
  • 【Clamping Range】: Maximum clamping range is approx. 2.75in/70mm; jaw width: 3.74in/95mm; jaw depth:...
  • 【Swing Jaw Design】: Wood Clamp's single-handle jaw can be rotated in two-way, making clamping more...

1) Basecent Metal Corner Clamps For Woodworking

Just as the name implies, these corner clamps are meant for woodworking. Due to the strong metal materials this corner clamp is made of, you can use this tool to clamp down on different types of wood, with different levels of thickness, quite easily.

Along with that, you can also use this corner clamp on plenty of other, much stronger materials.

Wood Clamps For Woodworking, Basecent Metal Corner...
  • [Join Different Sizes] The design of single swing jaw allow two different size of rods or blocks to be joined...
  • [Heavy-Duty and Durable!] This is a super heavy-duty angle clamp, which is made of high quality die-casting...
  • [Easy and Quickly Set-up] Loosen the rotary jaw, place your work pieces in two gaps, and then tighten the...

Ultimate Corner Clamp Buying Guide

We mentioned earlier in the article that the most reliable corner clamps can be difficult to find. For the most part, it is, but as long as you know what to look for in a set of corner clamps, you won’t have to have to spend hours researching every model you come across. In this guide, we’ll go over what key features a good corner clamp should have.

Corner Clamps
Corner Clamps


Holding large boards in place can take a toll on a corner clamp. The material used to make the unit should be able to withstand punishment for several minutes while you’re connecting boards.

Most corner clamps are made of cast aluminum, which is quite durable and lightweight. But pay attention to the thickness of the clamp – too thin and it might snap under pressure. However, if you want the best of the best materials, opt for a heat-treated steel clamp instead.

Board Thickness Capacity

Not every corner clamp is made to clamp boards of the same size. Some are designed for light-duty tasks like making picture frames while others can hold onto boards as thick as 2 or 3 inches.

However, no model fits all needs; you may need to purchase different sized clamps for different projects.


Believe it or not, the color of the corner clamp has some importance in how reliable the tool is. It may be able to hold boards in place without the slightest budge or wiggle, but if clamped too tightly, it may end up leaving marks on your stock.

You most likely won’t use corner clamps after adding finishing touches to the wood (paint, varnish, oil, etc.) so a little paint is nothing to cry over.

Self-Squaring Technology

The greatest challenge amateur woodworkers have when building furniture or fixtures is getting the boards to stay perfectly squared with each other.

Some corner clamps can help eliminate the guesswork with built-in self-squaring systems. This is especially beneficial holding boards of unequal thicknesses together to produce a perfect right-angle connection.

Best Corner Clamps
Corner Clamps

A “Third” Hand

No matter how careful you are, the slightest nudge may cause the clamp to release its gripping power on one side of the board, resulting in a skewed corner that saddens everyone in the woodworking world.

You could always get a second pair of hands to help hold the pieces in shape before tightening the clamps, or you could find a corner clamp with a third hand that’s located in the inner part of the corner. The third handle carefully aligns and keeps the pieces in place while you twist the clamp.

Pocket-Hole Cutouts

The versatility of a corner clamp is judged by how many things you can get done while the clamp’s grips are in place.

The most versatile models we’ve found have pocket-hole cutouts which allow the clamp to hold boards together while also allowing users to drive pocket screws. This is a nice feature but not a must-have by any means.


One often overlooked aspect of a corner clamp is the handle – the part that you twist to push the board against the clamp’s walls. The handle should be made of durable material. Ideally the same used to make the actual clamp.

Plastic is fine for smaller clamps, but twisting or gripping the plastic too hard can cause it to crack in your palm. However, if you’re careful, even plastic handles made in China can last for several years of regular use.

Corner Clamps
Corner Clamps

Corner Clamp FAQs

Although corner clamps are straightforward tools, it takes practice and time to get the hang of them. Next, we’ll address some of the most commonly asked about corner clamps.

Do the connected boards have to be the same thickness?

Ideally, yes. Not many corner clamps are made with self-adjusting technology that makes working with boards of unequal thicknesses a breeze.

However, you can use create a makeshift shim with scrap wood to compensate for the difference in thickness.

Can I use woodworking corner clamps for welding?

The benefit of welding clamps is the magnets that keep metal pieces together at the right angle. That’s not to say that woodworking clamps won’t work for welding, but at best, they should be used for tack welding and nothing more extreme.

How many clamps do I need?

If you’re building furniture, cabinets, or boxes with four corners, four clamps for each corner would be best. However, this isn’t necessary; you can always work one corner at a time with a single clamp.

Corner Clamps
Corner Clamps

Closing Remarks

Corner clamps are not a must-have tool for hardcore woodworking projects, but they do make fastening boards at perfectly right angles quick and easy to do.

Corner clamps will come in handy when working with difficult-to-hold boards of super-thin or super-thick boards of up to 2 inches.

In this guide, we not only provide you with our picks of the best corner clamps, but we also show you how to find the best model available to you.

Several features make corner clamps extremely convenient to set up, and some are versatile enough to allow drilling pocket holes while holding boards in place.

Corner Clamp | Bestseller

Last update on 2021-06-15 / Most affiliate links and/or Images from Amazon Product Advertising API

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