LeadingEdge V-Sharpener for any 6 inch stones - Sneak peek

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777 Edge

777 Edge

Dealer / Materials Provider
Joined
Sep 16, 2019
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Edit - Gritomatic have these available now. Link at the bottom of this post.

I'm in the final stages of my LeadingEdge V-Sharpener. Once finalized, it should be available on www.gritomatic.com if there is enough interest.

The stone holders will come in 6 inch or 4 inch sizes, and will be able to accommodate any of the common 6 or 4 inch sized stones. Including all Edge pro format stones, Venev stones, KME stones, etc.

The angle can be independently set anywhere from 5 to 35 degrees per side (per stone). You can use a digital angle cube or phone with angle finder app to set the perfect angle required. The final version will have a wider base than the one in the photo. The narrow base might be an option if there is demand for a narrow one.

Pic below is one of my test models of the 6 inch sized stone version.

Let me know your thoughts guys & gals.

original_3302e963-a1c1-4c68-a6b4-e27c38a63e8f_IMG_20220807_192534.jpg

Now for sale either in a pre-assembled and lubricated kit, or in a DIY assembly kit:

www.gritomatic.com

Leading Edge V-Sharpener

Leading Edge V-Sharpener utilizes two 6" stone holders and fine angle adjusters. The angle range: 5 to 35 degrees. V-sharpener supports Edge Pro form-factor stones as well as flat-end 6" stones.Attention! Sharpening stones are not included. Don't use strops and lapping films.You can buy the...
www.gritomatic.com www.gritomatic.com
 
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Nice job.

What will it be made of?
 
777 Edge said:
Thanks Blues Blues

PLA 3D printed thermoplastic. This allows it to get wet without any corrosion concerns, and it will make it affordable to purchase.
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Will it be sufficiently rigid to keep from torquing / moving during use?

Looks like something that would be useful with a multitude of Edge Pro hones I have on hand...the original EP stones as well as David's Diamond Matrix stones, and a few plated diamond versions as well.

The only small Venev hone I have is a 6" double sided hone I bought from Konstantin some years back along with some Venev bench stones, but it would probably work fine for it as well.

Yeah, that looks like something I'd definitely be interested in trying out...
 
Would you mind posting the dimensions of the stones: L x H x W that this will accommodate? I own a lot of stones but none of the ones listed in the OP. Thanks.
 
I’m looking for something exactly like this that will hold the large size DMTs. Nice job on this.
 
Blues said:
Will it be sufficiently rigid to keep from torquing / moving during use?
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Yes, it's rigid enough, about the same as a Spyderco sharpmaker (as an example).

annr said:
Would you mind posting the dimensions of the stones: L x H x W that this will accommodate? I own a lot of stones but none of the ones listed in the OP. Thanks.
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The stones I mentioned are just a few basic examples. It will actually take all the "standard" 6 or 4 inch "sized" stones. I'll see if I can quote some sizes for you sometime soon.

It also takes strops of the same size, of course you'll just have to make sure to strop upwards - as opposed to sharpening downwards with the stones.

This version is not meant for huge bench stones though but in future I might add a bench stone version.
 
777 Edge said:
The stones I mentioned are just a few basic examples. It will actually take all the "standard" 6 or 4 inch "sized" stones. I'll see if I can quote some sizes for you sometime soon.

It also takes strops of the same size, of course you'll just have to make sure to strop upwards - as opposed to sharpening downwards with the stones.

This version is not meant for huge bench stones though but in future I might add a bench stone version.
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I don't know if this is possible, but maybe you could make a short vid showing of this in use--I think that would help me get the 3D aspect and the sense of the stone in proportion to the blade. Or even post some pics with the stones included from different angles: above, side, etc. Looks really cool!
 
annr said:
I don't know if this is possible, but maybe you could make a short vid showing of this in use--I think that would help me get the 3D aspect and the sense of the stone in proportion to the blade. Or even post some pics with the stones included from different angles: above, side, etc. Looks really cool!
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No problem, I'll do that. Once I've finalized the design, I'll make a video about assembly and use.
 
Depending on pricing, this seems like a very good idea. I assume you need a angle cube or something for angle...or maybe a simple protractor?
I'd like something to take to work and leave there for knives and machetes. I don't do well with plain stones holding the angle.
 
Transitioning a friend from pull-thru's to Sharpmaker/Lansky form factor, by putting together a kit. Using a mix of Idahone's (7' long) and Sharpmaker's triangle ceramic ALO rods, and a 6" x 0.06" or 6" x 1" two, three, or four, diamond plate/bonded set.

Advantages of your LeadingEdge 3D V-Sharpener is portability, quick set up and take down, with fully adjustable angles from 5 to 35 degrees, Stone dimension limits: 4 to 6" long, by up to xx inch wide, no thicker then xx inchs/mm, for using a wide array of stone types: bonded, plated, artificial or natural, and stone shapes: round, triangular, rectangular, square, with notched and squared off ends, .👍

"Let me know your thoughts guys & gals."
* Thicker angle adjuster knob knurls could provide a more positive gripping surface.
* Fitting a smaller version your inclinometer, magnetically attached, would be a quick analog angle finder, and no batts required.:) If finer tuning of angle was needed, carved angle hash marks, registered to bubble level, like used for mounting scopes, might be useful?
* It would seem simpler to yolk one angle adjuster rod attached to both stone holder in the middle, below bottom notch on the stalk? You could size rod sliders n locks on backside to meet specific lateral forces.
*Your going to need to specify maximum forces allowable to avoid ham handed bending and breakage.
* Is PLA 3D easy to drill? Looks like sharpener is going to need base, or at least enough room for clamp.
 
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sickpuppy1 said:
Depending on pricing, this seems like a very good idea. I assume you need a angle cube or something for angle...or maybe a simple protractor?
Click to expand...

Yes, an angle cube, protractor or even just your phone with an angle measuring app.
 
scottc3 said:
* Thicker angle adjuster knob knurls could provide a more positive gripping surface.
Click to expand...

I'm already working on this, good idea thanks.

scottc3 said:
* It would seem simpler to yolk one angle adjuster rod attached to both stone holder in the middle, below bottom notch on the stalk? You could size rod sliders n locks on backside to meet specific lateral forces.
Click to expand...

My first design was based on an idea like this, but I went with individual adjustment for each side for the possibility of sharpening knives like japanese grinds, chisel grinds, some preferred wood carving knife grinds etc. with different angles on each side of the knife.

scottc3 said:
*Your going to need to specify maximum forces allowable to avoid ham handed bending and breakage.
Click to expand...

True, some ham-handed individuals manage to break just about anything they use. :-)

scottc3 said:
* Is PLA 3D easy to drill? Looks like sharpener is going to need base, or at least enough room for clamp.
Click to expand...

It will come with a wider base than the one in the photo. The small base in the photo is just for my own testing.

Yes, PLA is easy to drill if you wanted to.
 
If an angle cube is required to set the angle, then there should be a reference point where the angle cube can attached magnetically. So, it might worth considering to add a perpendicular magnetic surface somewhere on the device for that purpose.
 
murat1983 said:
If an angle cube is required to set the angle, then there should be a reference point where the angle cube can attached magnetically. So, it might worth considering to add a perpendicular magnetic surface somewhere on the device for that purpose.
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The base itself will be large enough and will be your zero reference point. I'm looking at making a few slots in the base for an angle cube and a couple stones or something. Rather than just using the base as a platform, I'm thinking it should be used as a stowage area too.
 
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777 Edge said:
FYI, to use an angle cube with it you'll zero it on its SIDE (as opposed to on it's bottom or top) and then measure your angles.
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Yes, I know. That's what I meant by the reference point.

I thought about using the base as the reference (or zeroing) surface but I was not sure if it will stand straight as the knobs seems to might interfere with the base standing straight up.
 
murat1983 said:
If an angle cube is required to set the angle, then there should be a reference point where the angle cube can attached magnetically. So, it might worth considering to add a perpendicular magnetic surface somewhere on the device for that purpose.
Click to expand...
A small clamp or a large rubber band will hold the angle cube.
 
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