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Anvil, bypass or scissor? A guide to loppers and shears

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Anvil, bypass or scissor? A guide to loppers and shears
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Anvil, bypass or scissor? A guide to loppers and shears

If you’ve been browsing our website in recent months, you may have noticed a liberal sprinkling of eye-catching red-handled tools, under the name ‘Corona®’. This is not down to us making use of one of 2020's most-used words; Corona is our sister company, based in the city of Corona, California.

The company been there a long time too, making reliable, high performance cutting tools. Its heritage goes back to 1928, when the founders started making a small clipper used to snip the oranges from the trees of the California orange groves. You can read more about our sister company and how this tiny clipper revolutionised America’s citrus industry here. [LINK to Corona consumer blog].

Which cutting tool do I need?

We realise that when it comes to garden loppers and hedge shears, the extra Corona choice on top of our own RHS-endorsed selection of large cutting tools, can make things more difficult. When you’re looking at choosing a lopper or shear, which is the right cutting tool for you? To help out, here’s our quick guide to which tool to choose for some common cutting jobs around the garden.

We've put a glossary of cutting tool terms at the end of this blog, so if you're not sure about any of the terminology we use here, do check that out.

 

The million-dollar question: what are you cutting? 

This is not about ‘How big is the plant you are cutting?’ Rather, it’s about ‘Is the plant you are cutting dead or alive?’ 

The choice of cutting tool comes down to the question of whether preserving the health of the plant is important. Most of the time for gardeners, plant health is paramount. Keeping the plants in your garden not only alive but happy, healthy and thriving, is what gardening’s all about.

  • If the plant is alive, whether flower, shrub or tree, you want to select a bypass action tool, or a scissor action tool.
  • If plant health isn’t a key concern with what you’re cutting – for example, if you’re cutting dead wood – an anvil action tool is the one for the job.

Bypass or anvil – what’s the difference?
Scissor action is fairly self-explanatory; the two has two long sharp blades moving against each other to complete the cut. But 'bypass' and 'anvil'? What do these terms mean?

It’s all about how the tool’s sharp blade cuts down onto the anvil, which forms the lower ‘jaw’ of the tool’s cutting area. The anvil (also called a cutting block, or sometimes a hook) supports the material which is being cut, holding it steady while the blade cuts down as the tool closes.

In a bypass action tool, the blade moves past the anvil as it completes the cut. This action gives a very precise, clean cut, making bypass action tools the ideal choice for cutting any living plant material. The clean cut minimises the chance of crushing the stem, which can leave a plant vulnerable to infection.

In contrast, with an anvil action tool, the blade cuts down directly onto the anvil. It’s a very powerful cutting action, but it can crush softer green growth, carrying a risk of infection. Anvil action cutting tools are ideal for cutting old, dead or very hard wood, or when a clean cut is less important than simply removing the stem or branch.

Most of our cutting tools use a bypass cutting action, because as gardeners, we're very often making cuts on living plant tissue, where keeping our plants healthy is the main aim.

Read on for more information on bypass and scissor action tools to make cuts on living plants. If plant health isn’t a key concern in what you’re cutting, you can find out more about Anvil action tools here

 

What kind of jobs are Bypass action tools useful for?

Bypass action tools make clean precise cuts on living plant material, so they're ideal for cutting through branches or stems when pruning.

Pruning a living tree or shrub   This might be for maintenance, to tidy the growth – perhaps cutting back in the autumn to reduce the chance of damage from winter gales. Or in late winter/early spring, you may want to prune a tree or shrub to shape or rejuvenate it; cutting out a main stem will encourage side shoots to form, giving a bushier, more compact shape. You may have a young tree or shrub which you want to train into a certain shape as it grows; this is called ‘formative’ pruning, and again, is best done in the late winter or early spring.

For pruning work, you might look at our loppers collection here, perhaps the RHS-endorsed telescopic bypass lopper or the RHS-endorsed mini lopper. These are ideal for the keen gardener, with a ten-year guarantee against manufacturing defects. You’ll also see several Corona options in our loppers collection. The Corona Comfort Gel tools are ideal for keen domestic gardeners, with soft-grip handles, a variety of clever features for extended reach or enhanced cutting power, and a ten-year guarantee. The Max Forged Corona loppers are incredibly hardwearing, using drop forged steel to create tools which will last a lifetime of heavy or professional use.

Of course, if the shrub you’re pruning is small and has narrow stems, a lopper might be too big to use properly, and a smaller bypass action hand pruner or secateur might be useful. You can find our guide to our secateurs, pruners and garden scissors here.

 

What sort of jobs are Scissor action tools useful for?
These tools are useful for cutting leaves and other soft green growth; trimming hedges, and shaping topiary are perfect examples.

Trimming a hedge or shaping topiary Trimming this living soft green growth requires a scissor action shear with a longer blade to trim a larger area in one pass, rather than picking out single stems.  These specialised hedge or topiary shear uses two blades moving against each other to make the cut. Just a word of warning; don’t try to use a hedge shear to cut through any thicker stems you come across as you cut. Instead, switch to a bypass action secateur, or even a bypass action lopper for very thick stems.

You’ll find a variety of hedge shears in our hedge shear collection. The RHS-endorsed hedge shears are ideal for keen gardeners, with a variety of features and a ten-year guarantee against manufacturing defects. The RHS-endorsed wavy-edged hedge shear, for example, is especially suited to trimming high hedges, as the wavy edges of the blade catch the growth to be cut as you work overhead. You’ll also see several Corona options in our hedge shears collection. The Corona Comfort Gel tools are ideal for keen domestic gardeners, with soft-grip handles, a variety of clever features for extended reach or enhanced cutting power, and a ten-year guarantee. The Corona Max Forged hedge shear is incredibly hardwearing, using forged steel to for edge retention, ready for a lifetime of heavy or professional use.

 

What sort of jobs are Anvil action tools useful for?

Anvil action loppers and secateurs are useful for any cutting where making a clean cut for good plant health isn’t a concern. Jobs for anvil loppers might include:
  • Removing dead wood from a tree or shrub
  • Thinning brush, brambles or overgrown areas
  • Shortening a long or heavy branch from a living tree, ready for removal with a bypass action tool

In all of these cases, maintaining plant health is less important than simply removing the growth, so the powerful anvil action is ideal. Use anvil action tools for doing the donkey-work of any cutting job, and save the bypass action tools for the precision cuts.

We offer less variety in our anvil action tools, but you’ll find them in our loppers collection and also in our secateur collection. Our RHS-endorsed ratchet pruner is a useful tool; it’s an anvil action pruner for single-handed use like a secateur, but the ratchet anvil action means it offers far more cutting power. There’s also a ratchet anvil pruner in the Corona range too, with a four-stage ratchet mechanism.

We hope you’ve found our guide to large cutting tools useful. When you’re choosing the right tool for the job, simply remember that the first question is always: ‘What are you cutting – dead or alive?


What does it mean? Our guide to cutting tool terminology

Bypass action – A cutting action where the blade passes by the anvil (or cutting block) which forms the lower ‘jaw’ of the tool’s cutting area, as the cut is completed. Bypass action tools give a clean, precise cut on the soft green growth of living plants, reducing the risk of introducing infection and keeping the plant healthy.
Anvil action – A cutting action where the blade cuts down onto the top of the anvil (or cutting) block which forms the lower ‘jaw’ of the tool’s cutting area. Anvil action tools give a powerful cut, but there’s a risk of soft, green stems getting crushed, with the risk of introducing infection. Use anvil tools where you don't need to worry about plant health.
Scissor action – A cutting action which features two sharpened blades moving against each other to make a cut. Suitable for making precise, healthy cuts on the soft green growth of living plants.
Ratchet action – An additional feature of some anvil action tools; it can boost the user’s cutting power by as much as 100%, compared with conventional cutting tools. These tools have a ratchet mechanism on the lever which opens and closes the ‘jaws’ of the tool; this mechanism gradually increases cutting power over several stages. The ratchet design allows the gardener to cut through thicker branches, or to complete regular cuts more easily. Because of the anvil cutting action, ratchet action tools are suitable for making cuts where plant health isn’t a consideration; on dead wood, for example.
To use a ratchet action cutting tool, start to make the cut, closing the handles as far as they will go; they will come to a stop part way through the cut. This is the first stage of the ratchet action. Open the handles, without removing the tool from the branch or stem you’re cutting. As you open the handles, the mechanism clicks on to the next stage of the ratchet. Close the handles again to make a further portion of the cut, until the handles come to a stop again; open the handles again and the ratchet mechanism clicks on a further stage. Repeat closing and opening the handles until the cut is completed. 
Telescopic – Featuring handles which can be extended for additional reach when required.
Compound lever action – A feature found on bypass, anvil or scissor action cutting tools. The compound lever action uses a system of levers, the resistance from one lever acting as effort to move the next. The compound system amplifies the user’s cutting power by as much as 50%. Some of our RHS-endorsed cutting tools feature it, and in the Corona range, look for the patented name DualLINK™ to find tools with a compound lever action.
Max Forged – Corona’s Max Forged tools use drop forged steel for the cutting parts of the tool, making the metal extremely durable and able to hold an edge. Drop forging is a traditional manufacturing process in which the steel is heated and hammered into a shaped die. During the shaping process, any voids in the metal are eliminated and also the internal grain structure of the metal is aligned to follow the general shape of the tool. The result is a tool which delivers the ultimate in terms of strength, reliability and in the case of cutting tools, it gives a blade which holds its edge for the longest time.



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