Sharpening electric planer blades. Chamfering

Sharpening the blades of an electric planer

Sharpening the blades of el. planer is needed as a regular activity, as the planer blade during processing constantly has intensive contact with the work surface. If the planer blade becomes dull, have nicks or other defects on the blade, it affects the performance of the device and the quality of wood processing. What are the ways for its sharpening??

There are many materials available on the web describing how to sharpen electric planer blades. planer at home. Some suggest using an electric grinder, while others use specially designed clamps for sharpening. It is clear, however, that balancing of blades, preserving blade geometry with such method of treatment will not be easy. Therefore, still the majority of owners of electric planers prefer to use special equipment for sharpening knives.

Sharpening planer blades with a special technique. The material of the blades is high quality steel suitable for resharpening. That’s why you can sharpen the planer blade to a razor blade if you want. It must be remembered that two blades are used in electric planers, which means that a balance between the blades must be maintained when processing. Sharpening the blades of a planer is essential for the proper operation of this device.

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When a planer blade needs to be sharpened

Technological progress increasingly frees man from hard manual work. But even in the age of computer technology not all operations are performed by machines, craftsmen often use a hand planer to manually give the desired shape to the workpiece. That’s why it’s so important to understand how the tool works and when the planer knives need sharpening.

Today two types of tools are used. manual and electric planers. The manual tool uses wide blades of 45,50 and 60 mm, and the electric tool uses blades of 82, 102 and 110 mm in width.

To understand that it is time to sharpen a manual planer is quite simple. When the chips begin to break when removed, and the work process requires additional effort, there comes a need to sharpen the blade.

With an electric planer everything is a bit more complicated. after all the main working body here is a drum on which the cutting blades are installed. The first sign that it is necessary to sharpen the blade is the quality of the machined surface. even after several passes it is impossible to get a smooth surface. The second sign is the shavings, after the passage over the workpiece, the shavings are fine and have jagged edges. The third sign is the condition of the tool itself. It starts to overheat and becomes more difficult to work with. Exactly these signs indicate that it is necessary to replace or sharpen the cutting tool of an electric planer.

Features of work with power tools

With electric planners perform various works, they can:

But not enough to know how to plan wide board or other parts with an electric planer, you must also use high-quality lumber:

  • carefully dried;
  • Without knots;
  • No fasteners: bolts, nuts, etc.д.;
  • With a flat surface, without any bulges;
  • without cracks.

The part is firmly fixed in the machine. For which at least 2 stops are required. Also ensure the free movement of the power cable.


To perform this operation, 2 stops are required:

Stops are installed according to the required dimensions, taking into account the instructions for the products used. And the distance is measured, focusing on the edge of the blade, which is in the upper position.

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The work is performed in several ways:

Attention! The tool or part must move smoothly at the same speed either way.

Sharpening blades for hand planers

The working edge of the blade is a rib, which has a small radius of curvature. Before sharpening, check visually the integrity of the edge: it should not have local metal tears. If they are present, planer knives have to be shortened.

If you do not have a sharpener, proceed as follows. Sharpening a hand planer knife is performed with a coarse-grained sharpening stone, which should be fixed on the workbench (both hands should remain free). Sharpening is performed by circular movements of the chamfer on the surface of the stone. It is advisable to periodically moisten the knife with water or a soap solution. This not only cleans the surface to be sharpened of the smallest metal particles of the knife, but also enables uniform cooling of the tool.

A fine burr on the blade along its entire length is a sign of the transition to the second stage of sharpening. Here the tool is sharpened using a finer grit size that removes the burr. Generally accepted gradation of stones according to their grit size is as follows:

  • High grit (30180 μm): Letters/ground with silicon carbide or corundum. Used for removal of large defects on blades, change of chamfer angle, etc. п.
  • Medium grit (720 µm): Electrocorundum or chromium dioxide stones/sharpeners. Suitable for pre-sharpening.
  • Small grit size (35 μm). Materials are the same, the tool is used for the final sharpening of knives.

After sharpening, the blade of the knife goes over a piece of hardwood, which finally removes the burr fragments.


Electric planer serves as an indispensable tool for construction and home repair, as in any power tool, in its device there are consumables. Consumables of the electric wood planer are knives, which are used to grind the wood. As a rule, the knives are double-sided and come in a set of two. Remember: if the planer chips poorly and you have blunted knives, it’s time to change them. But it should be noted that some of these should be resharpened. To do this, you need to know how to set the blades of the electric hog trimmer after sharpening, and how to conduct the procedure of sharpening the blades itself.

Knives for the electric slicer and shredder

The blades are mounted on the rotating drum of the electric planer and are designed to remove the top layer of material when wood is planed. If this tool has 1 cutting edge or 2 cutting edges. The latter blades are called pivot blades because their position is easily changed if one side becomes blunt. The blades for the electric slicer and shredder are made of tool steel or tungsten carbide. The former can be re-sharpened. Blades by shape can be: straight. used for picking out quarters and planing narrow parts; rounded. designed for processing wide areas, because between the lines of planing transitions they make neater; wavy. shaped blades for electric planer suitable for simulation of “aged” surfaces.

Before you start using the electric rotary slicer, it is advisable to check that the blades are correctly mounted each time. Their cutting edge should barely protrude outward and be parallel to the sole of the planer. To see how the blade is adjusted, raise the tool to eye level with the sole plate up.

The blade’s cutting edge should protrude on average 0.5 millimeters above the sole plate. On a sherchebet that is intended for initial rough planing, the cutting edge should be at least 1 millimeter out. It is very easy to adjust the blade position. Turn the small and large adjusting screws behind the electric planer blade platform to the left and right successively until the cutting edge is in the right position.

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Then place the knife in the electric planer and fix the position with the centering lever and the screw on the top plate. On new Hooders the position of the blade is usually already adjusted. However, after prolonged use, the setting will go off. Therefore, if you are using a planer after a long break, you should first check if everything is right. Do not start immediately with a newly adjusted electric planer without trying it out on an unwanted board.

Classification of blades for the electric planer

Also, electric planer blades are divided by size. If you have an imported planer, for example, by BlackDekker or Skil, then there are traditional 82 mm blades, they are called “plates”. Of inexpensive and quality, you can advise carbon steel blades. These blades will fit most foreign planers, even the professional electric tools Bosch and Makita.

Exact dimensions: length 82 millimeters, width 5.5 millimeters and thickness 1.2 millimeters. You can find knives from different manufacturers on the market and the price depends on the company in the first place. If you buy a Boshev one, it will cost twice as much as a simple household one. Zubr, Styer, Fit, Matrix. Of course, the difference in quality will be quite noticeable.

There are knives that are specially designed for some models of electric planers. For popular planers Interskol and Baikal special knives are designed, they are wider than “plates” and thicker. They are stronger, and when you run into a knot or nail with an electric planer, the blade will not break, and the nick will be easily removed with the emery board.

The width of these knives is always about 1 centimeter, they are significantly different from others. These blades for electric planers come in different lengths: 82 and 102 millimeters, under different models of Baikal and Interskol. If such knives are blunt, they can always be resharpened on their own. Unlike thin, they can be sharpened on the emery if you have sufficient sharpening skills and ability to stand flat.

Well, the third type of blades for electric planers. wide and thick, with the presence of holes for mounting. They are very specific and are only suitable for certain models, e.g. the planer manufacturer Rebir, which has a power of 2000 watts. These blades are very thick and powerful, up to 110 millimeters wide.

Changing blades of the electric tube cutter

The demands placed on the blades of an electric slicer are extremely high. You can easily tell by eye that they are blunt. To do this, look at the metal bevel and turn it around the cutting edge. The cutting edge is dulled if a shiny, thread-shaped stripe appears at the end of the bevel in some position. The angle of sharpening of the electric slicer blade should be close to 30 degrees.

Today there are blades for electric planers with a pivoting cutter. If one of such blades of the knife has blunted, it is customary to turn the knife over for the first time and replace it with a new sharp knife the next time.

Blades for electric planers are installed in the blade holder, which is placed in a tapered cross-sectional groove and clamped with three nuts. The height of the blade can be adjusted by the two screws on the edge of the knife holder. To remove the blade from the blade holder, you must loosen the nuts and screw the screws all the way in to slide the blade holder out of the slot.

After that choose the chisel suitable for the thickness of the knife and knock it out from the knife holder in cross direction. Next, turn the knife over or take a new one if the old one is unsuitable and carefully drive it into place by putting it to the side. Make sure that the knife fits into the knife holder exactly parallel to it.

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Getting Started with the Electric Circular Saw

Before you start working with a new tool, you should read the instruction manual for it. This will help you understand the features of the particular model and work more effectively with it. The following tool parts should be checked each time you use your power tool for the first time and every time you use it:

  • the body, cable and knives must not be damaged in any way;
  • The cutting elements must be firmly clamped in place;
  • The mechanism must be clean.

Wear work clothing with no hanging or loose edges when working with the tool. The sleeves must not be too long. You should not use gloves when working with a tool that has a rotating shaft, as they can get caught inside.

The wire of the multi-food spudder must reach the power socket without tension. If it is not long enough, an extension cord must be used. The workpiece must be firmly clamped to the workbench.

Algorithm for replacing the knives on an electric slicer and shredder

To remove the blades from the electric slicer and replace them with new (or properly sharpened) blades, you will need a set of wrenches, and in some cases, a screwdriver. There is no need to reassemble and disassemble the electric planer completely to change the working tools. The replacement is done in this sequence:

  • rotate the drum, aligning it in such a position as to gain access to the bolts securing the knives;
  • loosen, but not completely, these bolt retainers;
  • manually or with a flat-blade screwdriver remove the working head;
  • The other blades are treated in the same way;
  • put the new blades in their seats, fixing them with bolts;
  • set them in the right position.

The main point is to put the blades precisely in their seats and fix them firmly so that they do not fall out while the tool is working. Due to the fact that in different models of electric spanners fasteners working tools can vary, it is recommended that you first read the instruction manual to use the equipment.

knives can be found on the market with blades that rotate. it is very convenient because it is enough to turn over the blunt edge and replace it with a sharp one.

When you have two slicing heads on the drum of an electric planer, you need to replace both at once. This will prevent imbalance, the consequence of which is a decrease in the quality of processing lumber and failure of the electric planer.

The fabrication process

You can make this device yourself. The instructions are as follows:

  • To begin with an abrasive of the required grit is selected.
  • The next step is to create a template at the desired angle. A wooden block, from which the material is removed at the required angle, is ideal for this purpose.

It is difficult to create a complete machine with an electric motor. This is due to the fact that accurate calculations need to be made.

Note that a planer with timely sharpening of blades can last for a very long period. In the manufacture of the blade tool steel is used, which is characterized by high resistance to mechanical stress.

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