Thread: Home-made Wet Grinder

Given that the grinder is hand-cranked, there's virtually no risk of burning the steel - it just isn't fast enough. So why bother with the water? Why not just use a regular hand-cranked grinder? I suppose there's also the problem that, at least in my case, the grinder gets such a workout that anything made of wood would disintegrate within six months, especially with all that water sloshing about.

Originally Posted by snafuspyramid

Given that the grinder is hand-cranked, there's virtually no risk of burning the steel - it just isn't fast enough. So why bother with the water? Why not just use a regular hand-cranked grinder? I suppose there's also the problem that, at least in my case, the grinder gets such a workout that anything made of wood would disintegrate within six months, especially with all that water sloshing about.

I think he said either that he wanted to turn it into a treadle wheel, or that he planned to build a treadle wheel.

And ... it's still a neat idea

Paul

Originally Posted by snafuspyramid

Given that the grinder is hand-cranked, there's virtually no risk of burning the steel - it just isn't fast enough. So why bother with the water? Why not just use a regular hand-cranked grinder? I suppose there's also the problem that, at least in my case, the grinder gets such a workout that anything made of wood would disintegrate within six months, especially with all that water sloshing about.

I take that back. I just burnt a chisel, real bad, on a hand grinder...

Originally Posted by snafuspyramid

I take that back. I just burnt a chisel, real bad, on a hand grinder...

Dammit. Someone's messing with you!

Had a look at the video, geez it drags on a bit.

Anyway, the wheel used looks like a wet wheel, in other words, it needs water to work as the water removes the grinding dust from the wheel, if you didn't, the wheel would clog up very quickly and stop grinding.

Originally Posted by snafuspyramid

I take that back. I just burnt a chisel, real bad, on a hand grinder...

Eddie - I learnt that lesson very early on, myself. In fact it's no more difficult to burn a chisel on a hand-cranked grinder than on a powered one as long as you observe two simple rules: use a glazed stone and press hard. With just a little practice you should be able to get several mm of blueing down your edge in under 20 seconds.....

One of the reasons I'm not a fan of water stones is their ridiculous cost, but the slow cutting-speed is also a put-off when large amounts of metal need to come off. Grinding can be done quite safely with high-speed grinders as long as you use an appropriate grit size, preferably in a soft-bond wheel, use a light touch, and dress the stone regularly. I don't thing the last point can be over-emphasised!

Cheers,

I can't find where we were discussing (normal) grinders, so this will do ...

Paul

WoodCentral Articles & Reviews

https://www.woodworkforums.com/f8/cbn...hlight=grinder

Blog: Further Thoughts On Grinding

Good summary: Perfect Bevels on a Bench Grinder - Fine Woodworking

Joel Moskowitz's original article: How to Sharpen Tools on a Grinder - Fine Woodworking PDF Cover Page


and 2 good, short, simple and clear videos by Andy Rae for FWW - but I think they are subscription only -

Hollow grind on the grinder ... http://www.finewoodworking.com/subsc....aspx?id=25290

Honing ... freehand, hollow-ground, waterstones ... Member Login - Fine Woodworking

I hope I don't ruin someone's day ...

For sale online ... pedal 'hand' grinder ...

grinder pedal Ixion.jpg