Knife Grinds: Comparing Hollow, Convex, and Flat Grinds
Вставка
- Опубліковано 1 сер 2024
- In this video knife maker Walter Sorrells explains the difference between various types of knife blade geometries. Their advantages and disadvantages will be discussed, and explanations will be given about how they are made.
Help support this channel at:
/ waltersorrells
More at:
Web: www.waltersorrellsblades.com
Instagram: walterstactix
Twitter: @WalterSorrells
Patreon: / waltersorrells
I've watched many other videos on different grinds and their uses, yours is by far the best. You really keep it simple and to the point. Another great video.
I’ve known the pros/cons and the shapes of these grinds for a long time but seeing the techniques used to attain them really solidified my understand. Thank you for this video.
I've always been an advocate of the Flat grind. Easy to produce, mentain, & use.
Also very versatile. not just that, It's the only blade type you should take on your epic adventures.
Excellent video. The photos of the different grinds, the advantages and disadvantages of the different grinds, and the different blade shapes are both shown and explained well.
Great video! There is a lot of conflicting information out there about the specifics of the different grind types. You did an excellent job clearing it up. All of your videos are truly excellent and I am extremely appreciative of all of your efforts!
Holy cow. Simple, clear, and straight to the point. One of the best presentations of information I’ve seen in a while. Thanks for the info, keep up the great work!
I appreciate you taking the time to explain the different grinds you mentioned. thanks for sharing,
Like others have noted, this is an extremely easy to understand and useful video! It cleared up a few misconceptions I had instantly. Really great to see how the grinds are manufactured: I think that's necessary for the differences to truly click. Many thanks!
Thanks for taking the time to put this video together. Very informative 👍🏻
Much appreciated, Sir Walter. And I absolutely love how you stage your photos.
Your videos are by far the bests!
Many try to explain this but you make it so funny and aesy.
Thanks for sharing
This was a great video, would you do one on different knife tip types also (i.e. drop point, tanto, dagger, bowie, etc.)
Thanks,
Johnf
Awesome videos Walter, I always enjoy your videos. Keep up the great work!
I prefer a fine convex however a full flat grind with a convex secondary works well too! Thanks for getting this video done.
Such a well done video. Awesome explanation and examples, thank you!
Another great video Walter. Really clear explanation. Keep it up.
Thanks! Simple, yet very informative. Again, thank you for sharing your knowledge.
Great video. Very informative. Not lengthy. Perfect.
Great videos, Walter! I’m learning a lot from you.
Great Video! I’ve got a British Army MoD survival knife. I put a Convex edge on it using a strop and progressive grit sandpaper.
Good solid video . Right to the point and explained well with good examples .
Finally! I know what grind to put on my straight razor and my kitchen knife!
Also, that transition looks and sounds like something out of Home Improvement. Hehehe!
Great vid, Thanks. I just started trying out convex grinds, seem to work well for me.
Amazing video Walter! This helps sooooo much! Thank you!!!
I love the convex grind :)
Great video as always! Quality never decreases on this channel. So i'd like to express a wish for the next knifemaking video. I'm interested in making a Bowie knife and would like to see your "interpretation" of one. Would be nice to watch.
Wow, you are almost at 300,000 subs. I remember finding you 5 years ago when I started making knives
hi thanks for all the info,love knife making,GREAT hobby,you have taugh me a lot thank walter smith
i dont make knifes or even care to make knifes. but man i love watching your videos. i do like knifes and own a few custom.
thanks for explaining the grinds.
Awesome video as usual. Thank you for putting in the effort. That fighting style blade with the false edge on spine l@@@@@Ks amazing.
Thanks Walter, your videos "cut through" all the bs and just give pure good information.
Great information, thank you! That helped me a lot.
Good video and good explanations... like always... Best regards
Great overview of the basic different grind types!
I love your website!
Excellent and informative video as always! Domo arigatogozaimashita!
Thanks for showing us
cool video, very helpful as a knife noob I didn't have any idea what the differing grinds were good for :)
Thanks for sharing this information.
thank you. I can't count the number of times I've researched this video to refresh my memory.
great video - I'd love to see a future video on making a scandi grind bush afr knife!
Cleared that up. Thanks.
Thanks, This is some great information.
Great info!
I learned a lot. Thanks!
Awesome video
Thanks for the tips Walter. Could you make a video showing how to do the different grinds by hand and could you include how to make a serrated blade. Thanks.
looks like the best knife edge is subject to great debate. I guess ill have to own both a saber and a scandi and take to the woods and let all the hot air out on a piece of wood. Thanks for all the information. Now I can move forward with confidence
Very informative, thank you. :)
thanks Walter. I always thought the hollow grind was the only true grind. I'll try some of the others.
Scandi grind is also pretty solid.
+Colson Customs Scandi grind is my favorite one for utilitary knives
It’s a weak grind but very sharp
Hey there Walter, can you give us a few ideas, tips and references regarding finishes on wood scales? Penetrating oils, stains, lacquer, etc..? Thanks
Walter Sorrel, are you on FM radio anywhere? Seriously dude, the world needs to hear your voice. You would be doing us a favour.
Realy nice video! great learning videi too !! but didnt you forget the scandi gring? cheers keep the nice work!
Thank Mister Walter
Thanks Walter
I would have liked it if he could have compared scandi vs sabre vs full flat. These are the top 3 most common grinds for outdoor knives. I'd like to know the specific advantages and disadvantages to each of those grinds.
I agree about the flat grind limiting the sharpness. But lately I've been putting the secondary bevel on a really shallow angle, making the cutting edge quite thin and , therefore, sharp. With proper heat treating, I've been able to produce a really good zone between being too thin and not being able to take the beating to being thin enough to get and stay razor sharp through the beating.
Very good video
You're awesome!
Thanks
Thank you. This was a very good video. I wanted to know what a hollow grind meant. One question. How would you classify the scandi grind like on mora knives?
Hi Walter I love your work, what type of grind works best for a carving knife?
+1 best movie about this topic with machines examples
With Hollow grind you also keep a thiner edge right after sharpening? Where a flat grind keeps getting thicker a hollow gets thick and then slim again.
Hey Walter I want to know how do you know long your stock will become when forged for like knives, sword, katana, and etc.
That's cool, man. Thanks.
What are your thoughts on the Scandi Grind? It's the only grind I can sharpen with confidence, I use a flat stone. How does it compare?
Very informative! Thank you for sharing!
🥃cheers🍻
Wow just when I needed help.with grinding
convex grinds can be made on contact wheels/bench grinder by moving the blade up and down as you grind, its way faster than slack belt grinding but tends to give a wavy pattern on the grind line
I find a flat grind without secondary bevel (where the cutting edge is at the same angle as the flat) is a fairly good balance between hollow and convex but allowing very sharp edges as well. Particularly noticeable in wide blades where the angle of the flat is really steep.
Thank you
What kinds of sharpening stones do you use? I saw a few interesting ones in this video.
Thank you.
can you make a video on how to make the marble fade or the rainbow stains I've seen on knives?
you should do a video on knife points like clip point, drop point, tanto, etc. sorry if you have already done this.
can you make a video about different flat grinds ? If i'm correct there are a few different grinds that can be made and I think they all fal under flat grinds. Like scandi grind, or duble grind ( secondary grind), U grind ( not as shap but lasts longer, good for chopping, usualy on axes) and some more
hay walter im new to the knife making game and i enjoyed your how to make a knife out of a file video and when i get the time im going to try to make one . but i was wondering if you have made a knife out of a hedge clipper Blade before . the Damascus steel blade you make look really cool.
Regarding the convex grind, these are fairly easily sharpened by proper application of the 'mousepad-method' - the mousepad is used as a flexible backing for different grades of SiC-paper; a drywall hand sander works even better since it has clips to hold the paper. Once the convex edge is sharp, a strop will give it the final finish and also be useful to maintain the edge for a long time.
Sharpening a convex grind is pretty easy on a whetstone. That mousepad method is some masochistic but somehow funny phenomenon.
Hello can you tell me how to use water stones and which is the best stone to Sharp knife's and swords
Hey Walter, is coconut palm Wood good for a knife handle?
Scandinavian grind for life.
I used to hate the look of scandi knives. That is, till I tried one. Impressed really.
+Rakadis Til Valhalla!!
Scandi is literally a partial flat without a secondary bevel, in theory it sounds terrible but it works so good! Scandi's are awesome for bushcraft :D
+Rakadis I recently discovered the scandi when I bought a mora to carve a whole sale order of a few hundred figure 4 traps. easy to keep wicked sharp, and the steel holds an edge fantastically. I love it for woodworking, but I prefer a beefier blade for general purpose.
+dscrive Try the more traditional blades. Most Mora blades are mass produced as disposable work tools. Most are never sharpened. Just discarded. Try the Helle Viking instead for instance. 3.7 mm thick carbon steel blade. With proper care it will last until it is sharpened it in to dust. I have had mine for about 6 years. Perfect knife for the mountainous boreal forest areas in western Norway that I call home.
can you please show how to grind a tanto!!! I'm having so much trouble.
Love concave grinds.
Good info, however; I would have to disagree on the convex. I find my convex blades and especially those other grind knives with their secondary bevels "converted" to a convex edge the easiest to maintain. No precise angles to worry about. All you need is a somewhat flexible surface and some light abrasive. In a pinch, out in the field, some silty mud from the creek bottom rubbed on your thigh of your jeans and you got an instant strop for that convex edge. Like some of the others have stated, I am also somewhat partial to a Scandi grind as well for out in the bush.
Considering I can sharpen my scandi grind (deeper flat grind) in the field with emory cloth pinched between my thumb and forefinger. I'll stick with scandi. The other advantage is you are taking equal amounts of steel off both sides at the same time.... it would be very hard to move the edge off centre. The downside, it isn't as fast as a belt grinder... especially if your knife is a very hard steal.
There's a tool for every job 🤘
Would you make a straight razor for craps and giggles?
Thanks
When you are shaping a convex grind into a slack belt don't you run the risk of the blade biting into the belt and being snatched from your hand?
@Walter Sorrells I wonder if you will see this comment , not to mention it is on an older video , but how would you hand sharpen a convex grind after it is dulled , I am not sure about the blade terminology , but usually on a knife there is a parallel part , then one angle and then third the edge , I know to sharpen knives like that , but when it has a convex grind and only that one big edge , I dont get how to sharpen the knife without making that "third" edge ... I hope you get me xD
Walter, how often do you make/sell your swords? They're obviously very high quality; I'd imagine it takes a while to sell them
can you show us how to use the table grinder because i dont have a belt grinder .☺
yea but flat vs chisel grind why would you use one before another for paper cutting against a ruler should you use chisel?
Outside of the difficulty of maintenance and manufacture, is there any downside to a convex grind compared to a flat grind for all-around knives? It's sturdier and the same or potentially greater sharpness, isn't it?
Demmrir I was just thinking that, but how you would sharpen it is a huge factor. after hardening you can't use that belt at any Kind of practical speed, maybe a rocKing motion on your wet stone, but that would be very precise and time consuming work. any little roots would come out through the thousands of passes you would need to reMove material from that whole edge.
convex has less sharp end potential than flat grind.
hey , hello can you make a kukri because i cant find it how i need to begin this is my first (knife)
also thanks for this nice video's
thanks
is the secondary bevel necessary in a flat ground knife? if it is i would very much like to know.
No, it is not necessary and swords that have full flat ground blades (like many late-14th-early-16th century European swords or the 13th century European sword, the Elmslie type 1 falchion) usually don't have a secondary bevel as it limits the performance.
Also many Middle Eastern and Indian swords were made with full flat ground edges without a secondary bevel and most Navy cutlasses around the world and in fact a good portion of sabres also have this kind of edge.
And then there are the Scandi grinds for knives, they don't have a secondary bevel either. Hell most knives about 150 years ago that were flat ground didn't have a secondary bevel (when professional polishers were literred through towns like it was the only thing that made money).
Did I miss the Scandi grind?
is it possible to make a knife from normal steel instead of stainless steel?
what about the scandi grind there walter?