How to flatten water stones.
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- เผยแพร่เมื่อ 8 ก.ย. 2024
- If your sharpening stone is not flat it can ruin your chisel or plane iron. Here I show how to flatten water stones, although this system can be used for oil stones as well, just use paraffin instead of water as the lubricant.
#chrisonsharpening
#toolsharpening
Thanks for the video, You just reminded me that sand paper and glass chopping board is the easiest way to resurface a stone. Rather than spending 30 bucks on on flattening stone, $1.39 is what I spent on resurface 3 stones at home.
Always a pleasure to watch a true craftsman caring for the tools of his trade. Thanks Chris.
Thanks Bill, I hope it helps with keeping you stones flat, an essential part of sharpening.
that beautiful slurry from the 10000 stone. you can dry it and use it as buffing powder.
bigmandarr My finest is 8,000, is still worth saving it please?
Love the drywall screen idea job well done
Very useful, Mr Tribe - thank you
Spend the extra money on a diamond flattening plate l wrecked one side of my very fine naniwa water stones using his method,the particles from the sand paper came off and embedded in the semi soft water stones Luckily I only used one side with the sand paper forcing me to use the other side . I use them to sharpen my straight razors so a flat but non contaminated stone is crucial.
Rich Collins
Exactly.
Wet and Dry Paper contaminates the stones and scratches the blades.
A double sided two grit set up from Tsuboman Atoma (#140 & #400) is cheap enough, contamination free and will last a long time if you let the diamond do the work instead of applying excessively heavy pressure.
The best way to flatten coarse stones is to flatten them on each other.
#120 on #320
#120 on #220
Etc etc.
The water spray bottle says "Has bleach in it." Correct? Would explain why the permanent marker ran of the stone. Also explains why you did not have to do much to remove the permanent marker.
I agree. The marker isn't helping if it washes away.
I did not spot Pentu Prager's comment until now. Also I had not spotted that the bottle says "Has bleach in it" this is left over from a previous use. I was just using tap water. Regarding the speed that the marker was removed, this shows that the stone was not too out of whack. You should not leave stones too long between flattening because a curved stone will not give a true edge and will put a curve in the back of a blade when you remove the burr, something to be avoided in woodworking tools.
I used to do similar but when I invested in pricier stones I realized how much material I was removing ... the 4000 stone was relatively flat and you removed a lot of material with the sandpaper ... I bought an atoma plate and it's brilliant it is much more gentle and leaves a much smoother surface ... it wasn't cheap but worth it ... I've also seen people buying glass or metal and using 3M abrasive sheets and basically making their own atoma
Thanks for the information Jeff. I have not come across Atoma plates before, I use DMT, but not for flattening. Regarding the amount of material removed I just keep going until the stone is completely flat then stop. This would also be the method when using a diamond stone for flattening, so the media used should not affect the amount of material removed. In recent years I have moved away from using the dry wall screen as I believe it leaves course particles in the stone. It's also more difficult to find than bog standard wet and dry silicon carbide. So I need to make a new vid on this and scrap this one.
Good ideas.
Very very nice
Very nice.
Is it possible to use a section of roofing felt to do a similar job to the drywall screen?
Hi. I don't think roofing felt will work. The particle are probably not abrasive enough and will detach from the felt too easily.
I just use a small smooth rock or a small hard Arkansas whetstone to flatten my man made whetstones lol 😂
Use 2 water stone on on each other.
Dear Chris
I have shapton 220/1000/2000/5000 pro water stones , what grind of sand paper do you recommend to flatten this water stones line.Thank you
+Mark Foo If you wanted just one grit for the lot I would suggest 180 or 240 wet and dry. I think Shapton also make a special stone for flattening their stones.
can this method be used for any grit of stone? I have 2 combination stones... 220/1000 and 4000/8000
Hi Macus, I've only just spotted your question so apologies for the delay in replying. This method can be used on all grades of stone although I would not recommend using the dry wall screen on fine stones as the course grit of the screen my contaminte the stone. For the finer stones I would use arpound 240 grit wet and dry. Actually I suspect that after a short time it's the slurry from the stone that is doing the cutting rather than the abrasive
Please I need an answer. where do I get the drywall screen you used.
Hi, I got the drywall screen from the British online tools shop Workshop Heaven. However if you can't get it you can use any course wet and dry (silicon carbide) abrasive. In fact I'm beginning to think that wet and dry may be better than dry wall because dry wall tends to contaminate the stones with course particles.
Are waterstones make of natural stone or is it manufactured material?
+Tin Man some are natural cut stone but i think most of the cheap ones are just fine concret
+Tin Man most waterstones are man made, usually from aluminium oxide. You can get natural ones but they are quite expensive.
+Tin Man Very often aluminium oxide, but also silicon carbide. Others are mined novaculite used to make oilstones.
As said, completely natural whetstones are more expensive. By no means better, though. They mostly wear less, which isn't even that great because it doesn't help remove the metal from the blade away from the stone below as most fabricated whetstones. Artificial stone softness is good as it peels off the top layer as you sharpen, removing metal from the stone slowly and mixes it with the swarf. Other benefits of artificial stones is of course consistent grain size and texture/hardness without the imperfections and irregularities.
Why do sand paper rolls when got wet?
Hi Glen. It usually rolls when you wet one side, because the fibres expand on that side, wetting both sides should prevent this.
@@MrCJTribe Thank you for the tip!
I was trying to flatten my stone on a sandpaper, but the sand paper was too small, and I did it anyway, and I guess it was rubbing on the tile I was placing on which was a rough granite or some stone and now my coarse stone became somewhat polish on the area where it was rubbed against the floor. Now the "polished" area is completely unusable. And it starts catching the the metal particles as try to grind it even thought the stone was wet and I had water running. How can I restore my stone? I tried just rubbing steel on it and hopefully wear it off but it doesn't seem to get it' original texture anymore.
Hi. You should be able to restore the stone if you can work it on a larger piece of abrasive. Is the stone particularly large or can you not find any standard size abrasive sheet. Most stones should fit on a standard sheet. Alternatively you can get rolls of abrasive which would cater for longer stones. The abrasive must be water proof as you are using water as a lubricant. You could rub the water stone on a course diamond stone also if you had access to one.
Alternatively, and this is a long shot, you could try working it on a concrete surface just to remove the glazing. Then flattening if as described.
I hope this helps, please let me know how it turns out.
Christopher Tribe So it wasn't the sand paper that causes it to glaze? I couldn't find a larger sheet of abrasive at the time that was coarse enough, so I just rubbed it on some pieces I had left. I'll try to rub it on a new on so it doesn't rub on the tile and see how it goes. Thanks!
Christopher Tribe I was wondering if sanding it while wet or dray would make a difference. Because I reckon it'd still be wet by tomorrow, I'll have to wait a few days for it to be dry.
Christopher Tribe I already tried sanding down the stone again, but it just doesn't work somehow the glaze prevents it to get sand by the abrasive. What can I do?
Keep them wet always.
What do you use to stick the drywall to the glass?
+ketmaniac I just clamp it to the bench at either end beyond the glass plate. I would onlyn use the dry wall on courser stones as the dry wall particles can embed in the finer stones.
+Christopher Tribe Thing thing you were scrubbing the rougher stones against, it's a type of metal net, right? Or is it something else?
Do you need to flatten your stone if you are sharpening knives?
I don't have much experience with knife sharpening just using a diamond slipstone in the kitchen. I don't think flatness is so important with knives as they usually have slightly curved edges. As a woodworker I am particularly keen on flatness because it is important I maintain a perfectly flat back to the tool, this would be spoilt by a dished stone.
@@MrCJTribe OK thanks.
Rubbing two stones of any grit, together,will flatten them both.
Hi. Thanks for that, I will try it and let you know how I get on.
So did you try it? I mostly use glass and paper too, because it is fast but just to prove an argument I have been having with every so called expert online, two stones together, although slower, will make flat
I haven't tried it yet, been a bit busy. Will do next time they need flattening.
+utuberine, have you tried it? Would you let us know what your results are?
Of course I have and do. The problem with it is that it is slow and much faster results are obtained by other methods.
However, if it is done as regularly as the swipes a tool would make when sharpening, a flat surface can be constantly kept.
you know that glass is not very flat, and the thin sheets flex. Not a very good method really.
Better to just plunk down some cold hard cash and buy a diamond lapping plate. They're flat, large, and take a LONG LONG TIME to wear out as long as you only use them on your water stones. You just lap the stones on the plate under running water and in just a few strokes you're done. I use the DMT plate, it is flat to .0005". It is pricey, but so are your water stones.
Thanks for the comment Tactus. I'm not sure we need such extreme levels of flatness, we're not sharpening for NASA. 10mm float glass is as flat as necessary and if you're worried about it sagging you could put it on a known flat surface such as a saw table. I think a flat bench top would be OK though. Bear in mind that after just a couple of sharpenings the stones will have lost much of the micro flatness you achieved with expensive kit and be about as flat as could be achieved with glass.
Can i just use any diamond plate that i dont really use anymore? I have a 400/100 combo plate.