The best angle clamps, compared.
Top pick: iPalamila 8-piece square set Best value: LTDOOIT 4-piece corner clamps – Highest value part among the others: about £9.99, a printed 77 mm range and 430 ratings, for light joints if you do not wind the screw hard. Updated October 2026.
An angle clamp, also called a corner clamp or a 90 degree clamp, holds two pieces at a right angle while you glue, pin or screw them. In the UK you use one for drawer boxes, cabinet carcasses, picture frames and small repairs. A positioning square registers the corner. A jaw clamp can also close the joint, and a light casting can snap if you wind it hard. A band clamp pulls a whole frame rather than locking one corner. Capacity should be a millimetre figure for board thickness or jaw opening. A bolt length is not that opening. Count the rods and nuts as well as the plates. Check a new square against a known square before you trust it. Price does not guarantee 90 degrees. For welding, buy a copper-plated welder's clamp. A welding word in a woodworking bullet is not that tool. Tighten only until the joint is held, and keep your fingers clear. The [angle clamp buying guide](/hub/hand-tools/angle-clamp/sub/angle-clamp-buying-guide) sets out type, stated capacity and how many corners you need.
An angle clamp, also called a corner clamp or a 90 degree clamp, holds two pieces at a right angle while you glue, pin or screw them.
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Personal buying guide
Question 1 of 2
Do you need the clamp to close the glue joint?
The iPalamila set is four 5.5 inch and four 3.9 inch anodised aluminium squares, and the bullet includes clamps, gaskets and a hard case. The listing prints a figure of plus or minus 0.1 degree, which is a seller claim, and this file has no measurement of it. The amazon.co.uk line is 5.0 from 3 reviews, and all three texts are favourable. One uses the larger squares for cabinet assembly, and the 3.9 inch size is used for small picture frames and shadow boxes under light pressure. Setup is described as quick, and the dual-scale marks are used for alignment. No complaint appears in those three texts, so the file does not show what fails. Jaw capacity is not printed, the material field is empty, the included-components line says only corner clamps, and the set weighs 760 g at £49.99.
Pros
Cons
Best for: You want a 5.5 inch size for cabinets and a 3.9 inch size for small frames, and three favourable reviews are enough for you to try the set.
Less suitable: A choice that needs a large review sample, a printed jaw opening, or a checked angle.
Specifications
Common questions
Is the plus or minus 0.1 degree figure a test result?
No. It is printed in the listing bullet. This file has no independent measurement.
Does it include a case?
The bullet lists a custom hard storage case, plus clamps and gaskets. The included-components line only says corner clamps.
How many reviews are on the listing?
The amazon.co.uk line is 5.0 from 3 reviews. All three review texts are favourable.
The Preciva pair is two 140 mm anodised aluminium positioning squares, stated for board up to 50 mm, and used with a set of clamps. Across 1,175 amazon.co.uk ratings the line is 4.6, and 50 reviews were read. Buyers hold cabinets, boxes and frames square, and one buyer built ten drawer units and called them square. A review says 50 mm is the largest timber that fits. The screws are wound in and out for every joint, which is the fiddly part that comes up in the reviews. No breakage pattern appears in the reviews read. One review says they are not heavy-duty for welding, even though a bullet mentions welds. The pair weighs 970 g at £27.99, the bullets do not name a case, one buyer praises a plastic tray, and another wanted a proper storage case.
Pros
Cons
Best for: You are squaring drawer boxes, cabinets and frames in timber up to 50 mm, and you can spend the time on the screws.
Less suitable: Welding, board thicker than 50 mm, or a clamp you want to set and leave.
Specifications
Common questions
How thick a board do they state?
The listing says board thickness up to 50 mm. A review says 50 mm is the largest timber that fits.
How many squares are in the set?
The number-of-items field is 2, and the bullet describes two 140 mm squares. The highlight calls that two sets.
Is there a case?
The bullets do not name a case. One review praises a plastic tray. Another says the set needs a proper storage case.
The GOEDEKE pack is four one-handed swing-jaw corner clamps. The specification block does not print an opening, and one review measured the jaws at 53 mm and called that an odd figure, like an inch size restated in millimetres. Across 17 amazon.co.uk ratings the line is 4.6, and eight reviews were read. Buyers use all four on picture frames and small glue-ups, and they like the swing jaw for getting onto the work. No break, slip or out-of-square report appears in those eight texts. One review calls them fine for DIY and okay for the price, rather than heavy-duty. The title says wood, metal and glass, and a bullet names welding, but those are listing claims. Number of items is 4, the unit-count field prints 1.0, and the pack weighs 1.26 kg at £20.99.
Pros
Cons
Best for: You want four one-handed clamps for picture frames and small glue-ups around a 53 mm opening.
Less suitable: A job that needs a printed capacity, a heavy-duty wind, or glass and welding treated as a proven use.
Specifications
Common questions
What opening do they have?
The specification block does not print a millimetre capacity. One review says the jaws open to 53 mm.
Are they sold for glass?
The title says wood, metal and glass. No glass-jaw detail is in the specification block.
How many are in the pack?
Number of items and number of packs are 4. The unit-count field prints 1.0.
The Sofofux set is four die-cast aluminium jaw clamps with a single handle, a stated 55 mm range, a 70 mm jaw width and a 25 mm jaw depth. The screw jaw closes on the work, and reviewers use that to free both hands on frames. Across 105 amazon.co.uk ratings the line is 4.5, from 25 reviews read. Buyers call the adjustment straightforward for DIY and the quality acceptable for the price. One of the four did not hold 90 degrees. Another review says the fences are not perpendicular to the base, so the top of the joint splays. Handles are fiddly when two clamps meet, one buyer returned the set for a poor build, and a review says they are not for commercial use. A bullet adds a pair of non-slip gloves, the included-components line lists only the four clamps, and welding is a bullet claim rather than a result in the reviews.
Pros
Cons
Best for: You want four single-handle jaw clamps around a 55 mm range for frames and light cabinet work, and you will check each jaw for square.
Less suitable: Commercial work, or a joint where a splayed fence would show.
Specifications
Common questions
What thickness do they state?
The bullet states a 55 mm clamping range, a 70 mm jaw width and a 25 mm jaw depth.
Are they square in the reviews?
One review says one of the four does not hold 90 degrees. Another says the fences are not perpendicular to the base, so the top splays.
Does the listing include gloves?
A bullet says the kit includes four clamps and a pair of non-slip gloves. The included-components line lists only the four clamps.
The QWORK pair is two 140 mm anodised aluminium squares with four fastening blocks, four stainless rods and four plastic nuts, stated for board up to 50 mm. Across 69 amazon.co.uk ratings the line is 4.4, and 14 reviews were read. Reviewers call the squares well made, and some still use them once they accept the setup. On 6 mm MDF box joints, one buyer found too much clearance between the hole and the rod, so the hold was not secure. Another sent the set back as too fiddly to assemble. No snap or bend is reported in the reviews read. The squares themselves were still used after the rod complaint. There is no case in the listing, the set weighs 655 g, and it costs £18.99.
Pros
Cons
Best for: You want a pair of 140 mm squares with the rods and nuts included, and you will check the rod fit before a thin box joint.
Less suitable: Thin sheet such as 6 mm MDF if the rod is loose in the hole, or a set you want assembled in a few seconds.
Specifications
Common questions
What is in the package?
Two 140 mm squares, four fastening blocks, four rods and four nuts. The material notes say anodised aluminium, stainless rods and plastic nuts with a copper thread.
What thickness do they state?
The listing says the squares fit boards up to 50 mm thick.
Did reviewers find them fiddly?
One buyer sent them back as too fiddly to assemble. Another, on 6 mm MDF, said clearance between the hole and the rod stopped a secure hold.
The Anylot set is eight anodised aluminium squares, four at 14 cm and four at 8 cm by 5 cm, with 13 cm bolts, lock nuts, blocks, anti-slip gaskets and a plastic case. Across 10 amazon.co.uk reviews the line is 4.4, and the texts use the two sizes on boxes, cabinets, drawers and picture frames. One reviewer checked a finished panel against a known square panel. The same file says the squares do not put pressure on a glue joint: they hold the corner true while another clamp or a screw closes it. Hardware is enough for four clamps at a time, so only one size is assembled together. On an outside corner the long bolts point inward and can meet. The case keeps the parts together, though one review says the clamps have to come fully apart to fit back in, and one reviewer found the scale marks unclear in use. The set weighs 2.17 kg and costs £55.99.
Pros
Cons
Best for: You are squaring boxes, cabinets or frames and you already have a clamp or screws to close the joint.
Less suitable: A glue-up that needs the square itself to pull the joint closed, or a job that needs all eight squares assembled at once.
Specifications
Common questions
Do these squares close a glue joint?
A review in the listing says they do not put pressure on the joint. They hold the corner true while another clamp or a screw closes it.
What is in the box?
Four 14 cm squares, four 8 cm by 5 cm squares, eight screws, eight lock nuts, eight adjustable blocks, eight anti-slip gaskets and a storage case.
Can you use all eight at once?
One review says the kit only has enough threaded rod and knobs for four clamps at a time, so only one size is assembled together.
The LTDOOIT set is four die-cast aluminium jaw clamps with a stated 77 mm range, and the listing also says the jaw can be used at 45 degrees. Across 430 amazon.co.uk ratings the line is 4.2, and 50 reviews were read. Buyers hold picture frames and small joints square when they do not wind the screw hard, and one used them on a bed frame of 3x2 CLS. Several of those reviews say the body snapped or the metal around the bolt sheared, including by hand and on first use. The repeated advice is to stop well short of a hard tighten. Clamping force is not trusted to keep a heavier joint true, and reviewers call the metal weak for anything beyond small work. The title says wood welding jig, but no copper plate or heat rating is printed. The four clamps weigh 548 g and cost £9.99.
Pros
Cons
Best for: You are clamping picture frames and small joints, and you will keep the screw well short of a hard wind.
Less suitable: A joint you need to wind tight, or a job sold as welding.
Specifications
Common questions
What capacity is printed?
The listing states a maximum clamp range of 77 mm, and says the jaw can also be used at 45 degrees.
Do reviews report breakage?
Yes. Several of the 50 reviews read say the body snapped or sheared when tightened by hand. Others used them on frames and on 3x2 timber without reporting a break.
Is this a welder's clamp?
The title says wood welding jig. No copper plate or heat rating is printed. The body is described as die-cast aluminium.
The XUEMUO pack is four 14 cm by 14 cm anodised aluminium squares with metric and imperial marks, secured with clips and used with other clamps while bonding. Across 154 amazon.co.uk ratings the line is 4.2, and 46 reviews were read. Buyers use them to square timber while fixing cabinets and corners, and some call the angle accurate enough if a small error is acceptable. One buyer measured all four at 89.6 degrees. Another said the set was not square to another square or to itself. The screw is described as flimsy, gripping one side so the other sits tilted, and a clamp sometimes needs a tap to release. The title says 4 and the unit-count field prints 2.0, there is no case, and the set weighs 1.4 kg at £39.99.
Pros
Cons
Best for: You are squaring cabinet timber and you will check each square before the glue goes on.
Less suitable: Work that needs a measured 90 degrees without a second square, or a clamp you can set and leave.
Specifications
Common questions
Are the squares reported as a true 90 degrees?
Not by every buyer. One review measured all four at 89.6 degrees. Another said the set was not square to another square or to itself. Other buyers called them accurate enough.
Is a case included?
The listing does not state a case.
Why do the piece counts disagree?
The title and the number-of-items field say 4. The unit-count field prints 2.0. Both are copied as printed.
The AOQCFS set is 16 pieces: eight plastic positioning squares, four at 3 inch and four at 4 inch, plus eight separate clamps. The listing says the plastic will not rust and names cabinets, frames, drawers and shelves. A bullet also says the set helps with welding, the material field is plastic, and no jaw capacity in millimetres is printed. The amazon.co.uk listing has no customer-review line, so there is no star rating and no text that describes a job or a fault. Part number UKJSH000039 differs from model UKJSH000040, and both are printed. The package weighs 660 g, measures 14.5 x 4.2 x 21 cm, and costs £12.99. Questions in the listing about curved surfaces, metal joints and power tools are unanswered, so they are not specifications.
Pros
Cons
Best for: You want a low-priced plastic set of small squares and separate clamps, and you can judge it with no reviews to read.
Less suitable: Welding, a metal joint, or any job where you need a review that describes the hold.
Specifications
Common questions
What is in the 16-piece count?
The bullet says eight positioning squares, four at 3 inch and four at 4 inch, plus eight clamps.
Is there a star rating?
The listing has no customer-review line. The rating is left blank rather than filled in.
Does the listing mention welding?
A bullet says the set also helps with welding. The material field is plastic.
Kit B is four 10 cm ABS positioning squares with four bases, four right-angle screws and four fixing nuts. The amazon.co.uk listing text is French, the brand field is Generic, and the manufacturer field prints Best ZOIKOM. The bullets name boxes, drawers, cabinets, frames and furniture, and kit A at 15 cm is described on the same page but is not this variant. There is no customer-review line, so nothing on the listing says how the screws hold a joint. No jaw capacity is printed beyond the 10 cm square size. The best-seller line is Vertical Hold Down Clamps, while the title and bullets describe 90 degree squares. Model 1245 and part number 1258 are both printed. The set weighs 420 g and costs £9.09.
Pros
Cons
Best for: You want four 10 cm plastic squares at £9.09 and you can read the French bullets.
Less suitable: A checked metal square, the 15 cm kit A, or a job that needs a review of the hold.
Specifications
Common questions
Which kit is this listing?
The set-name field is B. The bullet says kit B is four 10 cm squares, four bases, four right-angle screws and four nuts. Kit A, at 15 cm, is described but is not this variant.
Why is the rank under hold-down clamps?
The best-seller line prints Vertical Hold Down Clamps. The title and bullets describe 90 degree squares for frames, boxes and drawers, so the file is kept as an angle clamp.
Is there a star rating?
The listing has no customer-review line.
Ten angle clamp listings on amazon.co.uk were scored from shelf prices, star lines, review counts and the review notes already on file. There was no lab test and no square check of our own. A millimetre figure is the figure the listing prints, unless a note says a reviewer measured it. Stars, sample size, use in the reviews and value in this set are weighted 35, 20, 30 and 15. The top pick is the highest score. The best value is the highest value part among the others.
Stars
35%The amazon.co.uk star rating divided by 5, multiplied by 35 and rounded to the nearest whole number. Halves round up. A missing rating line scores 0.
Sample
20%1,000 or more ratings scores 20. 200–999 scores 14. 100–199 scores 10. 20–99 scores 6. 1–19 scores 2. No rating line scores 0.
Use in the reviews
30%Review notes that name a repeated job, such as frames, cabinets, drawers or timber, score higher when more reviews were read. A body snap, a shear, or an out-of-square result in more than one review reduces the score. The part is capped at 30.
Value in this set
15%Shelf price in GBP, a printed millimetre capacity, a piece count that does not contradict itself, a named case, a filled material field and the size of the rating sample. Repeated snaps, a failed hold or a missing capacity reduce the part. The part is capped at 15.
Choose the type before the brand. A positioning square keeps a corner true while another clamp or a screw closes the joint. A jaw clamp puts pressure on the joint and can snap if the casting is light. Read a millimetre capacity, not a bolt length. Two corners stop a carcass racking. Four is the comfortable number for a drawer. Check a new square against a known square. Do not treat a welding word as a specification.
An angle clamp holds two pieces at a right angle while glue, pins or screws set. Shoppers also call it a corner clamp or a 90 degree clamp. Three different tools share similar names, and mixing them up is the usual mistake. A positioning square is an L-block with bolts, or with separate clamps. It keeps the corner true. It does not, by itself, pull a glue line closed. A jaw clamp with a screw does put pressure on the joint.
A welding word in a title or a bullet is not a copper plate or a heat rating. Anodised woodworking squares and plastic nuts are the wrong tool for arc welding.
A positioning square holds the corner true. It does not pull the joint closed. You still need screws or another clamp, and over-tightening will not rescue a bad cut.
Some eight-piece kits only have enough rods and nuts for four squares at a time. Read the contents line before you plan to hold eight corners.
Price does not guarantee 90 degrees. Reviewers of mid-price squares have measured sets that were not square. Check a new square before the glue goes on.
The first split is what the tool does to the joint. A positioning square, an L-block with bolts or with separate clamps, keeps a corner true and leaves the glue line to something else. A jaw clamp with a screw puts pressure on the joint, which frees both hands and can also snap a light casting if you wind it hard. A band clamp is a different product for pulling a whole frame. A welder's angle clamp is cast metal with a copper plate so spatter does not seize the screw.
Use the millimetre figure the listing prints for board thickness or jaw opening. A 13 cm bolt length is not a jaw opening, and the length of the square itself is not a capacity. If no millimetre capacity is printed, do not invent one. In the listings scored here, stated figures include board up to 50 mm, a 55 mm range and a 77 mm range. A reviewer's measurement of an opening is not the same as a specification line. Then count corners and hardware together.
Three typical situations, each with a recommendation from this comparison.
You are squaring drawer boxes and cabinet carcasses in board up to 50 mm, and you will close the joint with screws or another clamp. The Preciva pair is two 140 mm squares at about £27.99, with 4.6 from 1,175 reviews. Reviews cover cabinets, frames and ten drawer units. The screws are wound for every joint.
You want light pressure on frames and small joints, and you will not wind the screw hard. The LTDOOIT set is four jaw clamps at about £9.99, with a stated 77 mm range and 4.2 from 430 reviews. Several reviews say the body snapped or sheared. It is the best value for that light use, not a welder's clamp.
You want four single-handle jaws and a printed millimetre range, and you will check each jaw for square. The Sofofux set is about £22.99, with a stated 55 mm range, a 70 mm jaw width and 4.5 from 105 reviews. Reviews use them on frames. One jaw did not hold 90 degrees, and one set was returned.
The top pick is the Preciva pair of 140 mm positioning squares at about £27.99, with 4.6 from 1,175 amazon.co.uk reviews. Reviews cover cabinets, frames and drawer units, with no breakage pattern in the reviews read, if you accept screws that wind in and out and a stated board limit of 50 mm. The best value is the LTDOOIT four-piece jaw set at about £9.99, with a stated 77 mm range and 4.2 from 430 reviews, for frames and small joints if you stop well short of a hard tighten. Several reviews report a snapped or sheared body. Neither score is a lab test, and a higher price in this set does not prove a true 90 degrees.
LTDOOIT 4-piece corner clamps
Highest value part among the others: about £9.99, a printed 77 mm range and 430 ratings, for light joints if you do not wind the screw hard.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources from the research digest, last checked on 22 October 2026. Shelf prices and star lines are the amazon.co.uk figures in the display file.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the amazon.co.uk figures in the listings scored for this page. We did not lab-test these angle clamps.
