Before sharpening, you need two specifications: the diameter of the semi-circular cutting edges on the saw chain, and the pitch—or rake angle—of those cutting edges. Select a round file that matches the diameter of the semi-circular edges on the cutting teeth. Loosen the thumbscrews on the sharpening guide and slide the round file beneath the two metal hold-down clamps.
Tighten the screws to secure the file in the guide. Next, use an indelible marker to mark the first cutting tooth to be sharpened. This will act as a visual reminder to let you know where you started sharpening. Set the sharpening guide on top of the saw chain with the file resting against the ink-marked semi-circular cutting edges.
Now, while maintaining that angle, push the file forward across the cutting tooth. Repeat five or six more times, using slow, steady strokes. Keep count of how many strokes you make across the first tooth, and make the same number of filing strokes across all the other teeth. When properly sharpened the entire curved cutting edge of the tooth should be clean and shiny. After sharpening the first tooth, skip the next one, and file the tooth after that.
Remember, the sharpening angle on the saw teeth alternate to the left and right. Now, move around to the other side of the bar, and start filing the teeth that you skipped on the first go-around. Hand filing is perfectly fine for sharpening saw chains, but power sharpening is quicker and much more fun. There are two types of portable power tools that make quick work of chainsaw sharpening. Great saw. Keeping the chain out of the dirt cannot be stressed enough.
If the chips look more like sawdust or you're forcing the cut it's time to change or sharpen the chain. I clear hiking trails which normally involves cutting trees laying on the ground. By watching the chips change color I can tell when I'm into the bark, meaning it's time to stop cutting. I've seen chains overheated by improper power sharpening so I'll stuck to my hand filing thank you. And Oregon's website has an on-line technical section on sharpening and maintaining saw chain.
Like others said, it depends on what you're cutting and what you happen upon while cutting air-good, nails-bad. I usually swap chains after two tanks, since they are usually dulling by this point. It is a lot quicker to touch up a chain grinder or file than to recover one that was rocked out or otherwise severly dulled. Gas consumption seems to be a more accurate way to measure resharpening a chain.
Two tanks is about what I get before a touch up. What would cause me not to be able to start a new discussion vs replying back? I feel it had to have a vacuum system to prime it. It gets Spooky when I see we are down to 2 original Neighbors that we joined in in homes built in in our block. I know you can hear the Engines Roaring and Smell the Fumes.
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Email Save Comment Featured Answer. Like 2 Save. Sort by: Oldest. Newest Oldest. Jan 3, 6. The old loggers around here only let a grinder near a chain if it has been damaged. I too find the file every tank or two keeps you cutting efficiently and prolongs chain life greatly. Jan 3, 7. Egon Epic Contributor. Hand file by eye on 18 inch bar takes about minutes.
Jan 3, 8. PineRidge Super Member. I use a system of cycling through 5 different chains for my Stihl saw in the field. Changing a chain is much quicker than touching one up. Once a blade needs sharpened at the end of the day I then run it through my bench mounted Oregon A sharpener. They come out sharper than when I purchased them.
Jan 3, Thread Starter 9. Thanks guys! Over time, both sawing and filing take a toll on the cutters, wearing them down until the depth gauges which stick up in front on each cutter are too high.
This can make sawing ineffective, because the depth guides actually block the cutters. You can file freehand, straight across, with a flat file, or purchase a depth gauge guide that fits between the cutters and features an opening that lets you file the top of the depth gauges.
The top of the depth gauges should be just a hair—0. Disclosure: BobVila. You agree that BobVila. All rights reserved. Expert advice from Bob Vila, the most trusted name in home improvement, home remodeling, home repair, and DIY.
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