TV also doesn't realize that grinders are made for quick, easy jobs like sharpening axes or lawnmower blades. If you try using an angle grinder on a fine thing like this, you'll just ruin it. [He works on popping the head of the scythe off while he continues.] I don't have a lot of memories from my childhood, but I remember taking a chef's knife to a grinder when I was eight or so. The blade didn't sharpen so much as... the metal got very hot very quickly, and then it snapped in half.
[He pauses and looks at Lapis. Deadpan:] I learned a few new phrases in Mandarin that day.
[He pulls the blade off the pole with a grunt and sets it down carefully.]
There. Now we sharpen it against the whetstone in three sections just like we did the filing. 30 degree angle, like this. Count the strokes, and then we'll flip it over...
[This is going to take a while, but he's patient as he shows her how to hold the blade so she won't cut herself, and how to guide it against the whetstone. Ten strokes, then flip. Ten strokes, then flip, and move onto the next section. Eventually, he pauses.]
... See the oil on the whetstone? It's cloudy. That means it's time for fresh oil. Set the blade against the rest, then wipe the old oil off the stone.
[He cleans the oil with another rag and throws it in a bin somewhere, then reapplies a fresh pool on the whetstone. Really not riveting stuff, but he tries to do it so she can follow along.]
It's important to do that every once in a while. The oil collects debris and metal shavings, so you don't want that to stick to the blade.
no subject
[He pauses and looks at Lapis. Deadpan:] I learned a few new phrases in Mandarin that day.
[He pulls the blade off the pole with a grunt and sets it down carefully.]
There. Now we sharpen it against the whetstone in three sections just like we did the filing. 30 degree angle, like this. Count the strokes, and then we'll flip it over...
[This is going to take a while, but he's patient as he shows her how to hold the blade so she won't cut herself, and how to guide it against the whetstone. Ten strokes, then flip. Ten strokes, then flip, and move onto the next section. Eventually, he pauses.]
... See the oil on the whetstone? It's cloudy. That means it's time for fresh oil. Set the blade against the rest, then wipe the old oil off the stone.
[He cleans the oil with another rag and throws it in a bin somewhere, then reapplies a fresh pool on the whetstone. Really not riveting stuff, but he tries to do it so she can follow along.]
It's important to do that every once in a while. The oil collects debris and metal shavings, so you don't want that to stick to the blade.