Thread: Coarse Powders anyone?

Dave has a good point but the ceramic particle shape and how it breaks down might affford some insight at the very least. Long shot but may some of the larger grits rolling around break down end up with a fine edge polished too and you could start a post One Pasted Strop Stropping
I am a sucker for stuff like that, it's all about them little particles.
Mike

Not to be a terminology snob, but I think you mean round the edge rather than the bevel, Dave. The bevel on each side of the blade meet at a line, the edge. I agree, with edge leading honing strokes and a free abrasive, the edge could suffer from "rounding". Edge trailing though? That's what I'm curious about.

Chris L

Originally Posted by ChrisL

Not a weird concept at all, and it sounds like you've gotten a jump start on the experiment before I've had a chance to. I've thought for quite some time about seeing how well pastes would work from 500 grit on up. I'd like to use diamond, but the cost of powders in a wide array of grits is limiting of course. I've wanted to use monocrystalline for the coarser grits then polycrystalline for the finer grits. All pre-made diamond pastes and sprays from DMT to anything sold on razor sites for razor honing utilize mono-crystalline diamonds which are much more aggressive and leave a much harsher edge than poly diamonds. I will still complete my experiment, but I'm really interested to see how you come out.

I would like to see a butter knife dull razor taken from that stage to shaving sharp using nothing but a paste progression ending with chrome ox and......back honed from start to finish. Yup, that's the idea I've had for an experiment.


And, Jim, I think it will work. I see no reason that it wouldn't. "What about (lip quivering here) wire edges?". No biggie. Draw them off and keep going with no probs.

Chris L

You and Jim can have a race to the "One Pasted Stropped Edge" >Bets anyone? 2:1 odds on the ceramic powders. winner buys beer
Mike

I've got too many irons in the fire to take that experiment on yet. It would be fun to do it for the sake of doing it though. Some day!

Chris L

Creative juice doth flow,
But the fear of no beer.

Originally Posted by ChrisL

Not to be a terminology snob, but I think you mean round the edge rather than the bevel, Dave. The bevel on each side of the blade meet at a line, the edge. I agree, with edge leading honing strokes and a free abrasive, the edge could suffer from "rounding". Edge trailing though? That's what I'm curious about.

Chris L

Yes, the bevel is not rounded but the edge, thanks for the correction. I imagined a bevel still created by two planes intersecting, just rounded over at the very edge. So if you zoomed in one the very tip of the bevel you would see a "U" shape instead of a "V".

Bart's illustration of a rounded edge after creating the bevel using a coticule w/slurry is a good picture of what I mean. Hopefully he won't mind me using the image again for demonstration purposes:

One thing I noticed when doing the powder thing, is that jumping from lower frit levels to higher grit levels doesn't really matter that much since the powders are really aggresive, had to put them on a leash. In my experience it wasn't worth using since its kinda dirty and also someone told me that the grit gets imbedded on the blade which is kinda scary. If someone is interested in purchasing powders metal master on ebay has them up to 30k.