Fiskars 15-Inch Replacement Saw Blade for Pruning, High-Speed Steel WoodZig Blade for Lightweight Extendable Tree Pruner, Fits Fiskars pruner models 6391, 9388, 9390, 7889, 7831, and 8391

I have considerable engineering experience in cutting tool design, and in conjunction with a new ATSS pole saw, have just completed a rather extensive comparison of competing blades.BACKGROUNDBasically, I was a bit flabbergasted to discover a critical design flaw in common with virtually all pole saw blade designs.We needed several thousand dollars worth of tree de-limbing on extremely large pines. Climbing gear. A dozen trees up to 4 feet in diameter. Branches up to 10 inches in diameter and 25 feet in length. A lot of heavy cutting, up to 35 feet off the ground. Unable to get anybody out to our remote location, I decided to get a 6-section all-aluminum American-made pole saw from ATSS, and do the job myself.The ATSS pole saw kit is an awesome unit. I bought an extra Marvin 330 blade, and went right to work when the kit arrived.The Marvin 330 has 13 inches of teeth, and I'm a pretty strong guy. But the relatively pronounced curvature of the stock blades would stop a cutting stroke with 4 inches of blade still sticking out the far end of the branch. The curvature stopped the cutting stroke dead in its tracks.That's a loss of virtually the outer 1/3 of a cutting stroke; and a heck of a waste of energy as well, because believe me, that sudden arrest of cutting progress is much harder on you than a curvature would be that allowed you to use the whole length of the blade evenly.SEARCHES FOR BETTER DESIGNI attributed the arrested stroke to excessive curvature, and began to conceive of curvature ideals. A lot of research later, and I found however that virtually all pole saw blades share the pronounced curvature of the original Marvin.At no cost, American Tree Service Supply sent us some other blades to experiment with. Our job was huge, and when I needed to take a breather, I was still looking for other blades because the short cutting stroke was so consistent, and it was so obvious how much room for improvement there was. It took a considerable amount of searching before I found a 17.5-inch Fanno blade, with carpenter saw style teeth and the flatter curvature I was looking for.The Fanno was excellent. Do the math: Being as the flatter curvature allowed a full cutting stroke, then if the efficiency of the teeth and cutting action (*while* the blade is cutting) are equal, we should be doing 50% more work than the Marvin 330 (which has a pretty wicked looking tooth style itself). With the 4.5 additional teeth, if the cutting efficiency of the teeth were equal, the Fanno blade could potentially have produced 200% the cutting per stroke. Being as generating the power of the stroke is what taxes your energy, a person could potentially get twice the work done with half the effort.In use, the Fanno blade's flatter curvature proved a great improvement. It was very smooth to use. Much less energy expended. But owing to a less efficient tooth style, I figured I was only getting 150% of the work done with the pronounced curvature blades (of a prospective 200%).FISKARS TOOTH DESIGN — WHY THIS IS SUCH A GREAT BLADEWhen I found the Fiskars with the same flatter curvature of the better Fanno and the improved teeth, I had to order a pair right away.What is not evident from Fiskars images, is the sophisticated tooth design. Each of the alternating teeth are kicked out about 0.015 to each side, making the cutting path through the wood about 0.030 wider than the blade body itself. But the cutting with of each tooth is that of the blade body. Just like a chainsaw then, the blade body offers no impediment, and the tooth design is just unbelievably efficient compared to the usual ragged pole saw teeth. The kerf and tooth design or the Fiskars put it in a class of its own.What is happening with the generic tooth designs (including the carpentry-like Fanno blade I tried), is a sharp point is just tearing or abrading the wood away. A true *cutting* tooth, on the contrary, is actually slicing material and drawing it up into the gullets between the teeth. There's a huge difference. The solid, chiseling center of a drill bit is similar in its disparities between the outer cutting flutes of the drill bit. As there has to be a center, drill bit designs suffer the very disparate efficiencies between the center (however improved by modifications) and the outer cutting flutes. But it's the same kind of design disparity which make this Fiskars blade so superior to the generic tooth designs.In any case, the teeth on the Fiskars are nasty. They are very sharp. They slice wood... pulling the chip up into the gullet and pulling the tooth down into the cut — with the back relief angle partially regulating a rate of cut which is awesome for any hand tool. Think of the Fiskars as a narrow chain saw, which reaches any depth of cut with far less numbers of teeth crossing the cutting area, because the narrow cut allows the saw to go much deeper into the wood with far less effort.SHARPENINGI think the Fiskars will be far easier to sharpen as well then, because (just as you sharpen a chain saw) all you have to do is mount the blade in your vice and use a round file, seated in the existing curvature.HOW TO MODIFY A PHOENIX POLE SAW HEAD TO MOUNT FISKARS BLADES TO ITIt was very easy to modify my Phoenix pole saw head to mount the Fiskars to it. There are two horizontally-aligned holes in the Fiskars. I bolted the back hole in the existing Phoenix rear (universal) hole. Then I used a straight edge to align the first 3 inches of Fiskars teeth to be parallel to the bottom face of the Phoenix head. With the head supported on a spare piece of 2x6, I bored a 13/64 hole through the Phoenix head using the forward Fiskars mounting hole as a drilling jig. This didn't even take five minutes; and the alignment was perfect for the blade.TRIALS WITH THE FISKARSLong story made short — from the moment I started to cut, it was obvious the Fiskars is in a class of its own. I had a huge pine de-limbed up to 35 feet off the ground in less than half the time I could have done the job with any of the other blades.DIFFERENCES IN HANDLINGBECAUSE it cuts so efficiently, the Fiskars does however require a more forceful stroke.SUGGESTED IMPROVEMENTIn fact, because the Fiskars is so much more efficient, I think the curvature could be mellowed out a bit more; and I think it would also benefit from another 2 or 3 inches in length, because pulling so much harder, you tend to pull it out of the tree.SUMMARYI also did some smaller 30-40-ft trees which were heavily branched to the ground. I was pretty damn impressed to find how many of the branches I could take off with a single stroke. Hard dead branches way up on big trees came off easier. Huge green branches which hung up and pinched, could be ripped from the tree, right through the pinch, by sometimes a single forceful stroke, or at most a third or a quarter the strokes required by the other blade designs we tried.If I were Fiskars, I'd mellow out the curvature a wee bit more, and extend the length 2 or 3 inches still. I prefer the hookless end, because you often need to save a pinch by pulling the saw out the bottom of a cut. Despite a little room for design tweaking, the Fiskars 9333 is a killer.

This Fisker replacement sawblade for my pole saw works great extremely sharp cuts through branches like butter I should’ve bought one along time ago

My dad has this old tree pruner but the blade became so dull. He’s been wanting to replace the blade and I was able to find this blade for him.It fits perfectly with the specific holes placement on the blade. The quality seems to be good. Highly recommended

Let me start by saying that I never thought I'd be writing a review for a tree pruner replacement saw blade, but here we are. And let me tell you, this Fiskars saw blade is a real game changer.First off, the 15 inch length is perfect for those hard-to-reach branches that you just can't seem to get at with a regular saw. And the silver color? Simply stunning. It matches my neighbor's sports car perfectly.Now, I know what you're thinking: "But does it actually work?" The answer is a resounding yes. This bad boy cuts through branches like butter. I felt like a lumberjack in the Amazon rainforest, minus the questionable ethics and terrible working conditions.But the real kicker? This saw blade is a replacement for the Fiskars tree pruner, which means you already have the pruner. And if you don't have the pruner, what are you doing? Get on board with the Fiskars tree pruning revolution, my friend.Overall, I give this saw blade 4 out of 5 stars. Why not 5 stars, you ask? Well, I had a bit of trouble putting it on the pruner at first. But that's probably because I'm not very handy. Plus, it gave my wife a good laugh watching me struggle.In conclusion, if you're in the market for a tree pruner replacement saw blade, look no further than Fiskars. You won't regret it. Just be prepared to spend hours outside pruning trees because it's just that much fun.Here are some useful tips and tricks for replacing the saw blade on your tree pruner:1. Choose the right replacement blade: Before purchasing a replacement blade, make sure to check the model number of your tree pruner and find a blade that is compatible with it. There are different types of blades available, including straight, curved, and serrated. Make sure to choose the right type of blade for your pruning needs.2. Safety first: Always wear gloves and eye protection when handling the blade or working with the tree pruner. Make sure the tool is turned off and unplugged before replacing the blade.3. Remove the old blade: Use a wrench to loosen the bolt that holds the blade in place. Once the bolt is loose, remove the old blade and any washers or spacers that may be attached to it.4. Clean the pruner: Before installing the new blade, clean the pruner and remove any debris or sawdust that may be present. This will ensure that the new blade can be installed properly and will function correctly.5. Install the new blade: Slide the new blade onto the pruner's blade holder, making sure that it is properly aligned with the tool's guide bar. Replace any washers or spacers that were removed in step 3, and tighten the bolt with a wrench.6. Test the pruner: After installing the new blade, test the pruner to make sure it is functioning properly. Turn on the tool and make a few test cuts to ensure that the blade is cutting cleanly and smoothly.7. Maintain the blade: To ensure that your new blade lasts as long as possible, make sure to maintain it properly. Clean the blade after each use and sharpen it as needed.

I very much like the razor sharpness of this blade and that it was the proper fit for my old polesaw. However, my original blade cut while pushing and pulling, this one only cuts on pulling stroke. So if you are trimming limbs from an extended reach, this blade has a tendency to hang up in branch…..especially if limb or branch is small and dense. If cutting any type soft wood, ( pine, cedar, gingko etc) this blade zips right through. For more dense wood such as oak, pecan, crepe myrtle, black walnut….it will tend to hang up if limb is small. Still, this is great blade and am glad I purchased it….since my old blade still cut but was 20+ years old! Blade is strong and reliable. I recommend it if you like to trim limbs quietly, without polluting our environment.

Good product and perfect fit.

I’ve searched for a correct fitting replacement for my Fiskar pole saw at all the local hardware stores with no luck and ended up buying a similar blade and having to drill an extra hole ( which is a task on these hardened blades)Thankfully, this one is a perfect fit and the search is over with, time to get busy trimming trees!

no cutting up ! this cuts to the chase. love it