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Didn’t realize you could do this with sandpaper. I was thinking every little thing I do I have to buy at least two or three more tools. I got some decent little chisels, only to be met with the frustration of an uneven Whetstone. You probably just saved me about $30-$50! Thank you!
My boyfriend has been complaining about dull blades all autumn when cutting moose that he has hunted. So I decided to buy him a proper japanese kitchen knife as a christmas present and I also bought a whetstone to properly maintain the expensive knife. I was pondering about whether to buy a lapping stone to maintain the whetstone, but your video made up my mind. Sandpaper it is! 😊
Great tips. After watching your video I found an old oil stone that was laying around with some tools. Long story short, it’s over 40 yrs old and dished..I decided it needed to be flattened after watching your video but didn’t have any waterproof sand paper handy or a flat surface..I found a cut piece of 12 inch ceramic tile (leftover from bathroom remodel). I thought that should be harder than my stone so I flipped it over and ran my oil stone on the unglazed side for about 15 minutes. Wow, what a difference! Started out exactly like your naniwa. The result was a flatter stone but very clogged with residue. Unlike water stones, the stuff was just caked on..I just happened to have a can of WD40 near by with straw..well first squirt and I had a clean spot..end result was a cleaner surface and my stone felt like new..I didn’t make it totally flat and it works great.. I’ve been using water stones for my knives but now only use them for my Japanese knives. I just ordered a new set of oil stones because it is easier and faster( no soaking)..I still love my water stones but oils are a great addition to my collection. Oh, add a strop and you will have a great polished edge.
I did this a few weeks ago, except I used a ceramic tile for a flat surface. It took about 1 hour to flatten all my stones lol. That’ll teach me to not wait so long next time.
i wanted to know an effective easy cheap way to service my sharpening stone and your video demonstrated it, so now i can safely with confidance do it, thank you!
Lol when he's talking about sharp edges on waterstones, "Your edges will be catching". Yeah try 3 stitches in your finger from the edge of a waterstone. I'm not kidding, blood went everywhere it was crazy I actually didn't know what had happened at first lol.
No stitches involved but I nicked the underside of a knuckle on both hands before I learned to be careful wiping off the swarf. Never felt a thing and then noticed blood on the stone and thought "That's weird."
Damn that sounds scary never happened to me, but my finger slipped one time and it rubbed against the stone and it felt like a carpet burn then is started to bleed. It shaved alot of skin off lol
Need to level guitar frets. Realized I can do that with a good flat whetstone. I found one my dad gave me years ago and it looks almost perfect but I want to make sure it's perfectly flat. Your video is a big help!
Cool, thanks- best to buy the in the roll type of sandpaper (has more durable paper) one buys by the meter. Best to switch angles like lapping CPU lid. Anyway the powder leftover can be used for something productive (strengthen an epoxy like as an aggregate?).
Will a 320 and a 400 sandpaper work ok on my Shapton 8K and 12K stones for sharpening razors. I've just recently gotten into using a straight razor and wanted to know.
Have a couple of old stone that lookes like slate. Very fine and darkgray. Think they are oil stones. Water doesnt want to soak into them easely. They feel waxy and not flat. Can your method be used for these stones?
I use a cheap carborundum sharpening stone. They said I should use it dry or with machine oil. Something was starting to build up inside my sharpening stone, how do I remove it?
Great video! Is it ok to use sandpaper on fiber stones like a 12000 that you are using to finish a straight razor? Or would it wreck the grain of the stone? Thanks!
I would start with a higher grit in your case and finish even higher. Something like 1000 grit unless it's fairly dished then maybe lower. Then from 1000 go to 5000 if you can find it in big enough sheets. They do sell rolls of 1k & 5k that you can cut to fit your base (glass tile ect.)
could you tell which sand paper you use Because my whetstone has a lot of nicks, after the whetstone is sharpened, do I need to do anything to protect it?
Lots of good advice there, things I wouldn't even think about when teaching someone else, but I guess that's where the teacher side steps in. Cheers till the next one bud.
saved me from wasting money on a cheap, possibly warped, cracked etc., flattening stone on amazon. I have lots of cut-offs from stone countertops - super flat. I recommend raiding a dumpster behind a counter top place like I did.
👍I inherited two whetstones deep hollows from my dad. I started with your technique, then realized that the hollow in the stone was too deep. So, I flattened it out on a smooth-ish area of our sidewalk. Then, I used your technique for a fine finish. It worked great on the older stone, which I think was natural stone. It did not work with the newer stone which feels like a synthetic. Attempting to flatten it on a rough area of the sidewalk had little or no effect. Any ideas?
I think that a very coarse paper would work for the synthetic stone, the grit on the surface of sandpaper is really hard so it would have a lot better chance than concrete. I hope you can get your dad's whetstones flattened, this vid inspired me to do the same to my dad's, which he got from my grandpa. It has two sides and the coarse one has a hollow worse than any I've seen. The finer side is about as bad as the worst one in this video 😬
EXACTLY! Concrete sidewalk perfect hahaa. it sounds horrible but its abrasive. depending on the blend of concrete obviously. but its essentially the same as sandpaper but free.
i use a roll of 120 grit paper stretched over my table saw used dry - far less mess and perfectly flat in minutes. Water just adds to the mess. Scratches in the stone make no difference to the edge - on plane irons at least.
I recently noticed that my whetstones (Naniwa professional) have started to have the same problem as the stone you showed (although, not nearly as bad). This video is just what I was looking for, thank you! Been using a small flattening stone before, but it's almost impossible to get it perfect, since it's smaller then my whetstones.. My only question is if I should use different sandpaper grits on different whetstones to finish it. Like what grit should I use to finish off the flattening of a 400 stone, 1000 stone and 3000 stone?
My floors uneven cause i live in Philadelphia 😂😂😂 so i used a bar stool (i dont drink alcohol). I had to tip the stool so the seat was hitting my cabinets and hold my knee on the other end put the sand paper down 150 and went to town. It worked to. I still have a long way to go. Sharpening is a skill set on its own
I never push the blade against the stone when sharpening I dont like risking it at all I sharpen on my stones like its leather but with a little pressure
Cool, I wish good whetstones weren't so expensive (I can only buy one for now and it's about basic but thankfully it's Naniwa which I found by accident). There are a lot of abrasive in our house, is there a way our tableware and house bulding (bricks, concrete, garden stones, pots, etc without using sandpaper coz' one might go through a lot of those for just one sharpen which would be expensive.) already has all the grits we need for repairing, shaping, sharpening, honing, & polishing any blade including scissor? Maybe there should be a series to find the grits in everyday household object, including the house itself (even the roof, maybe there some 9000 grit up there so there no need for leather _ compound stropping? :-) The Flintstone/Caveman professional mult-grit sharpening in short. God bless.
question, for my 1000 grit whetstone, what grit sandpaper should i use? i recently bought 150 grit sandpapers and it was ineffective, it started to grind the sandpaper instead.
@@rinsim Hi, from my experience now, a lubricant appropriate to the stone is recommended. He is using water since it is a whetstone. I'm using wd-40 for oil stones, which is not a lubricant per se but aids to clean the stone. Sand paper grit has to be coarser than the stone but not too much like Kyle mentions. For oil stones, I need to use 50-60 grit for 300-400 coarse stones, otherwise it isn't enough. Whetstones are way much softer than oil stones; that is why he recommends not too coarse sandpaper. I don't think he mentioned it but emery cloth is required if you don't want to rip off the sandpaper in the first minute ;)
I would recomand to always use sandpaper with aprox half the grit that your stone has! For example 500 grit paper for your 1000 grit stone! It makes a lot of a dif. to not change the grit on your stone. Nice demonstration of how it s done! thx
That's nonsense. You can use lower grit sandpaper without any problem. It shouldn't be too rough tough. 180 works fine for JIS 1000 - >6000. It doesn't change the grit of your stone, and the marks from flattening vanish after some strokes.
just a heads up to everyone that use a good quality sidewalk to rough the stone out before proceeding to the procedure shown I assure you it works you will be astonished--in about a minute. Be sure to keep scrubbing on the concrete till its all roughed out because you will tend to stop too soon and there will be an invisible dish in the exact center. The side of my carbide stone for doing the initial roughing of damaged knives was VERY dished worse than what he showed--I scrubbed it down like I said about 90 seconds and brought it in for the various other stages and when I checked it real quick on my surface plate to see how close it was I AM TELLING YOU THAT THING WAS FLAT--that being said I still proceeded with the other steps. I will do a video since tomorrow I will do the other side which is flatter..the finishing fine side
@@alanmoore1126 I'm glad you found a way to get yours flattened! Have you noticed much difference when sharpening? I haven't had the chance to work on the one I use yet
For fine grit stones after #1000 i use sandpaper but for my coarse ones (#150;400;600) i use a SiC powder for sandblasting on a glass. i soak the stones, pour the powder and with small amout of water i start lapping/flatening the stone using circular motion. Once every minute i change directions or flip the stone. I was sick of buying sandpaper and how slow it was. I tried using tiles, concrete blocks and i was considering buying a DMT diamond laping plate, but where i live it cost 200 euros. I found in a knifemaking forum how someone used sand to flaten a sharpening stone. i gave it a try, sort of worked, but the grain size was uneven and it was hard geting consistent finish. i found at a hardware store a small container of SiC for sandblasting for 3 euros. its been 2 years and i havent used even half of it! SiC is cheap, fast and leaves a good finish
@@pavelgeorgiev918 depends on how hard the stone is.For soft stones i use waterproof sandpaper 80-100grit. For the harder stones i use 60-80 grit SiC mesh net because it removes material faster.
I had to make a glass lense once and the process is similar here but it reminded me of an annoying bit very important step when polishing glass. Between grits you wash everything like twenty times to make absolutely sure there's not a 2000 grit size abrasive when moving to 3k or higher. How this applies here is you probably do not want to use 60 grit on a 400 grit stone if the quality of polish on you bevel is important. It does effect sharpness but hardly. However, if you embed an abrasive material into another it's nearly impossible to remove it without damaging the stone. Also, everytime you hit that spot you'll see a scratch mark significantly larger than the rest. Mostly cosmetic but I wanted to throw it out there.
I think that makes alot of sense. At least it's probably best to regularly flatten your stones with the same grit paper to prevent dishing in the first place, but we are all guilty of at least 1 fairly dished out stone every once in a while
