Generally only good for grass and water weeds, prolonged smashing against woodier weeds will result in early failure. The deeper you cut into a branch, the higher the chances of the blade kicking into one direction are. Swing very fast and more of the cutting edge cuts grass. Most of these types of blades are extremely good at horizontal cutting, up to the the maximum depth that it can cut. Now go to a 40 tip knife blade and each blade is only cutting fractions of a milimeter. Try and smash the long string grass you see in the video above and you would be wearing away line very quickly, a blunt knife blade does not have the critical velocity to effectively shatter this grass, yet a blunt BrushDestructor blade does. What are the advantages and disadvantages of each blade type? The Ins & Outs of a Dowel Joint :A Comprehensive How to Remove Chuck from Drill Press for a Safe How to Make a Pair of Sawing Horse: 9 Easy DIY Steps How to Properly Sand Wood for Painted Wooden Signs. Anyway keep up the nice quality writing, its rare to see a nice blog like this one nowadays.. These teeth can be part of the blade and have a bent offset for blade clearance, or have chain saw type blades, either riveted to the disc, or an actual chain saw blade riveted between two discs. These are generally pivoting flail type blades, linked metal blades and a range of different types of chain.
So for any other brush cutter, it all depends on how steady you can hold the end of the cutting head and what quadrant of the blade you are cutting. However, even though these early issues of the tips coming off have been solved, theses blades are not indestructible. I should point out here that I am obviously very bias and you should take what I say here as such. I personally have used one of these blades for some time, before I decided to make my own brush cutter blade and it was this blade that convinced me that a flail type blade was the only way to go. For grass and watery weeds, this blade is very effective, but try to cut anything harder and you will end up trying to burn your way through. Unlike a chain saw, which has a tip cutting speed, a fraction that of brush cutter blades. Their round shape is to blame for this. I lie the helpful information you proide in our rticles. Before you know it, you are trying to polishing your way through, keep it up and you are burning your way through. The deeper the cut, the more care must be taken to hold the blade straight, twisting one way or the other can cause the blade to bind in the cut slot, resulting in a serious kick back. Save my name, email, and website in this browser for the next time I comment. Many thanks, I appreciate it! Generally good at cutting soft materials, like grasses and watery weeds. Hit it at very high velocity, and grass will act as if it were frozen and will shatter at the impact point. It would always be stimulating to learn content material from other writers and follow a little bit one thing from their store. Now consider a rectangular blade with two cutting edges, that is spinning at 100 revs per second, that means that a cutting edge passes the same spot 200 in one second. It is the most common of the metal blades and are typically provided when you buy a standard brush cutter. Can you suggest a good hosting provider at a honest price? If you decide that a chisel type blade is what you need and you are prepared to keep them sharp, than this is what I think is the best blade by far. Good at cutting hard materials, like woody weeds and hard woods. You can loose teeth that way as well. The biggest issue with a round saw type blade as you cut larger diameter branches, is that you have an increasing number of teeth all cutting at slightly different speeds and depth. This is something your average lawnmower cannot do. Thank u for sharing your info.
The circular multi-tipped blades are of no use where mulching is concerned. This means they require much more power and torque to drive and so are more suited to larger machines. Des running a blog like This blades are even more prone to the same kick back issues as the steel blades, because of the very wide cut of the chain teeth. For the web site, I use the Christmas Gift theme, which is a child theme of Twenty Sixteen WordPress Theme. Requires regular sharpening to get the best from this blade, when used as a chisel blade. This page was created to answer a large number of questions I have recieved from people inquiring about blades in general, why should I spend this sort of money on your blade, when many brush cutter come supplied with metal blades, why my metal blade does not work as well as expected, Why buy a BrushDestructor blade when I can buy three different blades to do the different jobs, for half the price on eBay, why dont you make a tungsten tip flail blade and these are just the questions that come to mind. Thank you! It is then discharged through the back of the device where it will become fertilizer for your grass. These types of blades have a sharpened knife edge to the front edge of the blade and cut by slicing through vegetation. The nylon line head has a max. These teeth are sharp and can easily slice through any vegetation. Does more, with less power than most other blades and nylon line heads. Its a pity ou dont have a donate btton! of cding however I was hoping to start my own blg soon. Small sapling less than 50mm, you cannot beat the cutting speed of a good brand name steel tooth blade, that you can sharpen yourself with a chain saw file. These types of blades have no sharp edges and generally rely on their thin thickness and weight of the pivoting blade or chain to smash through vegetation. Great read! But this does depend a lot on design of blade. 
Its good t come across a blog The general limit in thickness for a brush cutter is about 4 inches.
Generally good at cutting soft materials, like grasses and watery weeds. It is only when this happens and the rough un-cut vegetation that bounces back up under the blade, or when cutting in a vertical motion that the inner knife edge does any cutting.
Depending on blade diameters, tip velocities range from 300 to 450 km/h (180 to 280 miles/h). This is because, there is not enough mass to its flail blade to punch through denser weeds and so they just keep getting flicked back out of the way. Generally works well with soft grasses and watery weeds. Generally cutting any branches larger than 50 to 60mm in diameter and the speed of cutting slows down very quickly. It should be used only for overgrown grass that is too tricky for an average lawn mower to handle. Depending on design and quality of steel can generally take a lot of punishment. 
Studying this info So I m satisfied to show that I have an incredibly excellent uncanny feeling I came upon just what I needed. Requires Regular inspection and pivot bolts need to be sprayed with oil after each use. The most common is the star shape that have three or four cutting edges, but many of the cheap Chinese brush cutters available on eBay, often come with multiple range of blades ranging from two (rectangular) to forty (like a circular saw blade). As these blades being rectangular or star shaped, also tend to drag grass to the centre and wrap it around the gear head. 
The rounder shape, multi tip knife blades, with much shorter knife edges, are pretty much useless at mulching and there is not much more that can be said them with regards to mulching. diameter of 440mm and at full revs the tip speed on the line is 510km/h.
Ive bookmarked your site and Im incuding your RSS feeds to my Google account. However the diameter where this slowdown starts to occur does depend on brush cutter size and power. So as you can see, not much of that knife edge actually does any cutting. Lets say you swing the brush cutter 1m sideways in 1 second. On this one page you will find the most complete and detailed information, you will need to choose the. Mulch leaves and smaller branches with ease, Requires a large amount of power to operate, Mostly only available for bigger brush cutters, Tall grass and woody weeds are not this blades forte, There is a possibility of debris flying around at high force, Quite pricey because of all the different components required, Smashing weeds that are woody can easily result in failure, Most of these blades consume a large amount of power. Are generally more expensive, because of their more complex shape and require extra machining to bend, sharpen or attach extra parts. Tht is very attention-grabbing, Youre an excessively professional blogger. It is by far the most common type of metal blade and often comes standard, with brush cutters that come with a metal blade. If you found the above article interesting, then you should also find this one on, why nylon brush cutter lines keep breaking, very interesting and useful as well. Im starting a blog son but have no codng know-how so I wanted to et advice from someone with exprience. Orbital Sander for Paint Removal: Is It a Good Idea? There is the chainsaw type teeth, that is either riveted to the main disc, or an actual chain saw chain fitted around and between two discs. Ive joined your rs fed and ook ahea to seeking Please keep us up to date like ths. A Chinese copies of these chain blades are still being made and some person is importing and selling them on eBay here in Australia. This one blade replaces the need for all other nylon line and metal blades. Which were once the most common, are probably the least common now. All of these blades are circular with varying number of teeth around the perimeter. But this does depend a lot on design of blade. Drillly is audience-supported.
A blunt knife blade, is one of the main reasons for users to develop the habit of revving the brush cutter to full revs and throwing the blade into heavier vegetation and this becomes a habit that is hard to break, when swapping to a chisel or saw type blade. Im quite certain Ill learn lots of new stuff. They range in shape from rectangular to round with dozens of small knife like teeth. Now if you can imagine your brush cutter head swinging from side to side, it is the speed of the swing that will govern how much of the knife edge is exposed to the new grass. Thank you for your whole work on this web page, you are carrying out a useful job. Use them anywhere near the ground where dust can sand blast the tips, or dig into the ground and with the tip speed these blades are doing they loose their cutting edge very quickly. What up to everybody, its my first quick visit of this weblog; this blog contains emarkable and truly fine information dsigned for readers. this require a large amount of work? Whereas a not as hard, but tougher steel blade as shown on the right, with a much steeper cutting angled cutting tip, can have a 0.05mm polished edge and still cut fairly well. With a multi tooth saw type blade, the deeper the cut, the more teeth that are cutting, the greater the drag. These types of blades, are generally very poor at mulching, as the large round disc, does not move up and down easily through bush. Im extremely impressed with your writing skills as well as with the layout on your weblog. My brother recommended I may like this blog. Thanks! Even though these blades can be tough, if proper cutting techniques are not used, the blade tips can break off once they are dulled. Please Swing very fast and more of the cutting edge cuts grass. Maintains its set set design efficiency, without any need to maintain an edge.
And then there is the Tungsten Carbide tipped blades with these tips brazed to the disc. Would require a lot of power to drive and so would only be suitable for larger machines. Again this leads to the same bad practice that you see so often on YouTube, rev the shit out of the brush cutter and then throw the blade at the branch. Runs smoother than fixed metal blades as flail-blades will absorb a lot of shock. While some teeth are cutting across the wood and some teeth are cutting opposite the direction of travel and out of the wood. But wanna make statement on few general issues. Helo this is kind of of off topic but I was wondering if blogs use WYSWYG editors or if you have to manually code with HML. It is like dropping a skill saw into a piece of wood to start a blind cut and trying to hand onto it. The major brands of brush cutters all offer this type of blades as an option. I wish to say that this post is awesome, nicely written. Whilst they are handy in a bushy area, it is sometimes difficult to decide which blade is the right cutting tool for the job. To write this article, I dragged all the old blades I had rusting away at the back of the shed, to reuse so as to evaluated them based on the knowledge I now have after years of developing and improving the BrushDestructor blade. Always refer to your user manual for safety and assembly instructions when operating your brush cutter and when changing blades.
I believe in the KEEP IT SIMPLE STUPID philosophy, as I hate flash moving sites and I hate pop ups and unwanted advertising with a passion. Cheap, due to being made of one part and stamped out of sheet steel for speed of production. You will then have the power to drive it properly, without owning a monster machine and it will give a wide enough cut, so that wet sapwood doesnt bind up your blade as easily as the other chisel blades.
3: Can you cut grass with a brush cutter? Being a fixed blade, there is no give, when you hit a hidden rock or steel object and with a really hard impact the knife tip will either bend or chip depending on the type of blade and quality of steel. Chisel blades are great at cutting horizontally if they are used within their depth limits. Learn more. As hard as this alloy is when subject to low speed impacts, it becomes a lot more brittle when facing the high impact speeds that are found when used on brush cutter blades. All will now go to the tip for scrap metal. If you found the above article interesting, then you should also find this one on, why nylon brush cutter lines keep breaking. Hit a hard rock with no give at these speeds and one or more teeth will most likely chip. Swing very slow and only the very tip of the blade does any cutting.
Cut grass is brought into the deck and cut a few more times. Thanks to the mass of the metal blade, whereas a nylon line has a very low mass and so must rely on a much higher velocity to transfer the same energy into the impact point. You cannt onside I will make certain to do not omit this website and give it a look reguarly. The best type of knife blades for mulching are the rectangle and star-shaped edges. evey once n a while that isnt the me outdated rehashed material. Hes always amazed at the depth and breadth of woodworking all over the globe, and feels proud to be a part of this great effort. There is the one piece blades, where the teeth are the same material as the whole blade and generally have an offset to give some blade clearance when cutting through green timber.
How to Bend Rebar Into a Circle? Lets look at my small 25cc 4 stroke Husqvarna brush cutter, that has a gear ration of 1.46 which means that the output speed at the gearhead is almost 75% of engine speed.