Pruning doesn’t only mean thinning out vegetation and removing unproductive, dead or diseased branches. Pruning has several functions, such as controlling the shape of young plants; containing or shaping the canopy of adult plants; restoring old, diseased or weather-damaged specimens; and optimising the production of flowers and fruits.
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Pruning is all about knowledge, in terms of knowing the plant that you are pruning, knowing about pruning techniques and how to use them. But also know-how in terms of choosing the most suitable pruning tool for a certain situation based on the diameter of the branches, their position/accessibility, the hardness of the wood and, last but not least, the workload. Therefore, when pruning, it is better to have a range of tools—both manual and motorised—so that you can select the best one for each job: today we will find out when to use a lopper, a battery-powered chainsaw, a brushcutter and a hedgetrimmer.
Pruning tools each have their own merits and drawbacks: each is suitable for a certain type of cut, according to the variables we listed above. Here is a rough outline of what the different pruning tools are used for:
Pruning shears: for pruning branches up to 2.5–3 cm in diameter.
Lopper: for pruning branches up to 4–5 cm.
Pruning saw: for pruning branches up to 10 cm thick.
Telescopic pruning shears: similar to pruning shears, but useful for pruning tall or distant branches without a stepladder (the shaft can be extended up to 3.5–4 m in length).
Telescopic pole saw: for pruning tall or distant branches without a stepladder (the pole can be extended to over 4 m).
Chainsaw: for pruning branches over 10 cm in diameter (depending on the power rating and power supply).
Telescopic pruner: similar to a chainsaw on a pole, for pruning tall or distant branches without a stepladder (the pole can be extended to over 3 m).
Brushcutter: for cutting reeds, brambles, shrubs, saplings and groups of suckers, including of large diameter.
Hedgetrimmer: for trimming hedges and shrubs (also available with telescopic shaft).
When pruning, we recommend that you always wear the most appropriate protective clothing: face shield or protective spectacles, work jacket and trousers, utility gloves, safety shoes and, when using very noisy tools, noise filtering ear defenders or ear plugs. When working with a chainsaw or telescopic pruner, opt for cut-resistant clothes, gloves, and footwear. If you are at risk from falling branches, pieces of wood or other objects, also wear a protective helmet. By the way, here you will find some rules for safely using a chainsaw (both battery-powered and other types).
Regardless of the equipment, the best times to prune are winter and the first months of summer. At different times of year you get different results, because the plants’ response to cutting changes: find out more about when and why it is better to prune in winter.
We mentioned that in order to prune the right way you need knowledge and know-how. In short, it takes experience or specific training, like that needed to become a professional pruner.
02 February 2023
Benefits of using indexable inserts
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One of the most significant benefits of using indexable tools is that cutting edges can be updated don’t need remove the tool from the production site.
The renewal just needs to loosen the clamped inserts, rotating or turning the insert (transposing) to a new cutting edge, or installing a brand new inserts to replace the completely worn one.
Unlike turning tools, indexable milling cutter bodies from different tool manufacturers have different inserts shapes and grooves, and users can only purchase milling cutters from the respective tool manufacturers.
Most tool manufacturers can customize off-label indexable forming tools. However, forming milling tools is still an effective method to complete complex shapes, and can improve production efficiency and reduce tool inventory.
In general, parts with steps, arcs, and chamfering features require multiple tools to be machined together. If the combined indexable forming tool is used, the production time, tool inventory and part quality can be shortened.
Disadvantages of indexable inserts
Indexable cutting tools also have disadvantages.
Inserts are usually made of high pressure pressed alloy powder and binder in a mold. After pressing and forming, it is sintered at a high temperature to combine the alloy powder with other materials and make the blade have a certain strength.
The pressed Insert has higher edge strength than the grinding Inserts. Although the Inserts are stronger the cutting edge is not sharp enough, which limits the effective shallow cutting depth and thus makes finishing more difficult.
For a milling tool with more than one Insert, the change in the groove of the blade and the size of the Inserts will cause the cutting edges of the different Inserts to be in different planes. The result is a poor surface finish or obvious leaping joints. In this case, only use another type of tool for fine processing.
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