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| Thread ID: 141542 | 2016-01-05 23:44:00 | Sharpening Mower Blades - Different Methods | kahawai chaser (3545) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1414096 | 2016-01-05 23:44:00 | Anyone here has sharpen mower blades? I think it's time to sharpen the blades on my mowers. Been long time, can't recall doing it. But not sure to whether to use my bench grinder- as need be cautious to grind lightly and evenly. Or to laboriously use my hand files in the vice. Yet this guy in this How to Briggs and Stratton video (www.youtube.com) (about 4 mins in) just tilts the mower, and lightly skims the blade with a angle grinder. Nice, neat, and simple, with minimal work. Not sure how sharp the blade needs to be..razor or not? |
kahawai chaser (3545) | ||
| 1414097 | 2016-01-06 00:16:00 | After a while the blades get out of balance, so best take them off and get it done making sure they balance them. After that a quick run over with angle grinder in situ is good. No need for razor sharpness on a rotary. |
Cicero (40) | ||
| 1414098 | 2016-01-06 00:26:00 | Husband used to put ours on the grinding wheel. Don't have to be super sharp...... |
pctek (84) | ||
| 1414099 | 2016-01-06 04:51:00 | always good to take them off, especially if the hit stones etc the front edge can fold over and needs grinding and reshaping. also if its a mulching mower need to do the top part of the blade which is difficult to get to on a bar blade. |
tweak'e (69) | ||
| 1414100 | 2016-01-06 05:08:00 | Chances are if they have not been sharpened for a while they probably need replacing Out of balanced blades can damage the mower and if a Rideon bugger the Mandrels ,I usually replace my Rideon Blades before they are worn to far Most mower places have a special device to check for bent or out of balance blades when they sharpen them |
Lawrence (2987) | ||
| 1414101 | 2016-01-06 20:48:00 | Don't forget to repine the gringles too. | Richard (739) | ||
| 1414102 | 2016-01-07 00:52:00 | Swing back blades (most mowers other than mulchers and rideons) should not be sharpened, replace if cracked or curling. Solid blades can be dressed with an angle grinder. If worn or curled the blade should be removed, sharpened and balanced. If badly worn or damaged, bent, it should be replaced. The edge should not be razor sharp, it will curl and stop cutting. The motor should not run faster than 3,600RPM which is the optimum for best cutting. Make sure that the governor is working. Avoid solid blades if possible. Use a Disc with 2 or 4 swing back blades, this way the crankshaft will not bend if the blades strikes something. For further information have a look at www.gardeningaids.co.nz |
mzee (3324) | ||
| 1414103 | 2016-01-07 07:21:00 | Well I sharpen my swing back blades, it was cutting ok so maybe I didn't need to but they had a round cutting edge and it's hard to see how that even works. I just put the whole disc in the vice and used an angle grinder to sharpen them up a bit. I always mulch so the blades really need to be sharp for it to work properly. |
dugimodo (138) | ||
| 1414104 | 2016-01-07 08:20:00 | I wondered why the swing back blades are a little loose, hence their name and usefulness to protect the crankshaft. I'll swap the bar blades on my mowers with the spare 2 blade discs blades I have. As suggested by some skin/dress with angle grinder. Don't like using it, I have my 5 mowers (or 7 blade combo's) to do, will cause cramp vibes in my wrist for a day or two with angle grinder. Then no real need to have them razor sharp, could easily nick too if they strike small stones, and as noted by mzee curl up. | kahawai chaser (3545) | ||
| 1414105 | 2016-01-09 03:25:00 | I've been angle grinding mine for about 30 years....no problems. I put a large knife in the vice, sharp edge up, and lay the blade across it at the halfway line to get a balance, grinding a little off if needed to get it as close as possible. Works for me. | bazmeister (3216) | ||
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