Ribbitmefoot: Nice inventive strategy on your part mate however, you could have sharpened the cylinder and blade by using the "backlapping" method. Much simpler procedure with equally excellent results. Still, excellent video. Well done.
steffankaizer: most complicated method ever
chris18cc: I cant find how to get the cylinder off. Can you help.
fergusonfan1: fairplay to you for having a go but we charge like £3.50 I think it is for every inch for cylinder mower sharpens so wouldn't say that's expensive
MalcOfLincoln: I realized that after I make the video lol. I always worked in thous and this gauge is metric. But at the end of the day it cuts paper all the way around, just as it would if I had used a professional sharpener, so I guess I'm allowed this small error :) See the last video "Suffolk Colt Mower"
SamToTheD: I must say, your units aren't quite correct. Every point on the dial on your metric DTI is 10 microns (0.01mm). What you are describing as a thou is in fact 100 microns (0.1mm) which is equal to 0.0039 inches. So your blade is actually within 4 thou! I like your method though and may employ a similar one myself!
lovesarahchang: Like you I am old school, used to take cars and motorbikes apart since a kid, nowadays the average lads only know pc's and would struggle to take a spark plug out or change oil etc, thats a job for DAD or the Garage. OMG, I was taking apart my motor bikes , including Triumph Bonneville at 19 years old, doing engine overhauls, using degree discs for timing the ignition etc, all with no formal training at the job, most of my mates all did their own jobs on their bikes and cars then !!
lovesarahchang: When we used to do this job years ago ( I was a teenager then !! ) We used to take the cylinder out, put it on a grinding machine, driveshaft inbetween centres, this ensures accurate parallel cutting, put new bottom plate in if the old plate was to bad to repair and then set up by lightly turning the blade over, putting paper in adjust to cut the paper. This ensured that you were not rubbing metal to metal, In case of adjustment to lower plate, a light tap on the bottom plate with a hammer !!
MalcOfLincoln: I agree, however as I didn't have a proper machine, or a lathe to use I just had to do my best. My father had a proper cylinder sharpener when I was young, and I worked as a precision grinder for 16 years, grinding to a tenth of a thou. After I refitted it, I measured it with feeler gauges inbetween cylinder and the bottom blade. Ground the high spots off by hand. Must have done a pretty good job to get it to cut like that eh!
lovesarahchang: Having worked in a garden mower repair shop years ago, I cannot see how your method can be anywhere near accurate. The correct way is to have the roller sharpened in a lathe or in a proper purpose built grinding machine. You are spinning the blade round in one point and getting readings from the one point, fair enough, but the way you have constructed this wooden frame is not accurate enough to ensure consistant parallel readings from the dial gauge down the whole lengh of the cylinder blade.
MalcOfLincoln: Yes the dial gauge was touching. You can see it move on every blade. I usually have it further up the scale, but had to have the lightest touch to avoid moving it. Are you sure your's isn't sticking? If you are having problems, refit the cylinder and bottom blade to the mower. Screw it down so it just touches, then use a feeler gauge between the two. You have to finish off this way, as you cannot check for lateral high spots.
johnnee51: When I use the dial guage the small inner dial has to somewhere in mid scale, are you sure the end was against the blade?
MalcOfLincoln: Thanks :) Seems 20 years on, 16 years as a precision machinist still has it's uses (grin).
TheEnglishbloke71: Great use of that dial gauge, pretty accurate sharpening job Malc!
MalcOfLincoln: Thanks - been a bit of 'head scratching' for a few days before I thought of this lol
805ROADKING: quite interesting Mate!!☺
How to sharpen a cylinder mower blade with a bit of wood5
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