Convex grind sharpening help !!!!!!!!

[Bushcraft4life]

Got myself some wet and dry, 320, 600 and a double sided fine and very fine strop made for me by Bardster .

I still can't sharpen this bloomin thing even with written instructions from Bardster and numerous PM's.

It may be that i am being a little impatient but i spent about 30 mins on it and my knife didn't feel like it had been sharpened at all.

Can somebody tell me how long it will take to get my knife sharp, instruction on how many strokes on each side before changing and what i may be doing wrong ect.

Any advice will be greatly appeciated

Cheers all

 

[mikehill]

30 mins sounds an age. How bad is it ? I usually do 5 strokes a side. Have you tried inking the edge to see where you are exactly sharpening ?
Mike.

 

[Bushcraft4life]

The knife is quite blunt which is why i started on a 320 piece of wet and dry. I haven't tried marking the blade yet. Will a felt tip do ???

 

[dwardo]

Make sure your not lifting the spine too high when using the paper as it will whip the edge right off, the soft base under the paper should give all the bevel you need. Also get a magnifying glass and take a close look at the edge and see if you can see what your doing wrong. Also as mentioned before what kind of knife is it ? what steel etc even post a pic and we can take a look

 

[JonnyP]

Jamie...If its really blunt you may need some courser wet and dry to start off with.....If it is starting to stress you, I will sharpen it for you so you can get going with it. Pm me if you want.....

 

[Bushcraft4life]

Heres a pic of the knife

 

[Bardster]

doesnt look as if it should be too bad, Jamie. I was sharpening 5 knives today and a couple had dinks in - still only took a dozen or so strokes either side to bring them back to shaving sharp. My offer still stands - send it my way and i will put an edge on it that you can maintain.

 

[Bushcraft4life]

That is an old pic btw

This is the knife now

It was pretty blunt when i got it (gift from Roefisher) so i am guessing it hadn't been sharpened in a while when i got it, and that was just after christmas and i have never used it.

Bardster after all the trouble i have gone through with this thing i would be happy to accept your offer to sharpen it for me can you pm your address.

 

[bladeymae]

Your problem i believe is that you have to much metal behind the edge. Take your 320 grit paper and put it on a hard surface. Hold the blade at a 20 degree angle and alternate strokes on each side of the blade until you feel a burr.Move on to your finishing grit paper on a soft surface and again at a 25 degree angle alternate strokes until you feel the burr again. Lightly strop the blade until the burr is removed. I am adding a drawing to give you a visual idea of your problem. The area in blue on the drawing is where the work needs to be done.The angles don't have to be 20 and 25 they could be 18 and 23 or whatever angle you prefer.I do recommend at least a five degree difference in angles.

Johnny

 

[Bardster]

PM sent,

Doent look that bad Johnny - but i will sort it for him. ( I have a slack belt as well as lots of experience doing this )

 

[spamel]

PM sent,

Doent look that bad Johnny - but i will sort it for him. ( I have a slack belt as well as lots of experience doing this )

You be careful your trousers don't fall down then!

 

[Tadpole]

PM sent,

Doent look that bad Johnny - but i will sort it for him. ( I have a slack belt as well as lots of experience doing this )

when you sort out Bushcraft4life knife, would it be possible for you to do a mini tutorial on the subject, my first knife (frost 780 carbon) went from scandy grind to convex due to my inexperience in sharpening, I’d like to see how to scandefy it again
In particular, I would like to know how to flatten the convex blade whilst still keeping the edge central, and how to resurrect the knifepoint so that it is as it should be. I can now maintain a very sharp (IMHO) blade, even on my convex’ed knife but as of yet I’m unable to get my head around what to do to regrind/sharpen a messed up edge. I know people say that a carbon frost is a throw away knife, but to me it seem such a waste.

 

[Bardster]

Fair enough, I'll see what i can do heheh. tho to be honest i much prefer a convex edge. Its a lot harder to maintain a scandi perfectly - for most people they will nearly always end up convex to some degree.

BTW if you are going to the bushmoot I know Longstrider is going to be running some sharpening workshops. I will also be there and willing to offer advice and instruction

 

[Draven]

Its a lot harder to maintain a scandi perfectly - for most people they will nearly always end up convex to some degree.

This is irritatingly true... I was reprofiling and regrinding a tanto-point/hollow ground/double bevel neck knife to a much more usable clip-point scandi and ended up with a convex as opposed to scandi. Still, it's a pretty wide convex so I sharpen it the same...

I've got two clippers, one of which I messed up royally by sticking it into the ground (hit a stone, got a couple dings in the cutting edge) and it's the one (as opposed to the good one) which I can easily keep shaving sharp and perfect scandi...

 

[michiel]

Firstly: Very light pressure! Don't press too hard. A little more pressure than the weight of the knife would suffice.

Secondly: Mark the edge with marker. Make sure trhe edge touches the paper.

This is how I sharpen my snowy river:

http://s116.photobucket.com/albums/o9/mvh_01/Snowy%20river/?action=view&current=127_2705.flv

This is how I strop:

http://s116.photobucket.com/albums/o9/mvh_01/Snowy river/?action=view&current=127_2706.flv

Hope this helps.

Michiel

 

[Shinken]

Scandi has never been a problem for me.

Personally i think it's myth that one grind is easier to sharpen than the other. Whichever grind you have you will have to learn good technique. anything else is just internet talk and bias.

Imho:tapedshut

 

[Bardster]

Scandi has never been a problem for me.

Personally i think it's myth that one grind is easier to sharpen than the other. Whichever grind you have you will have to learn good technique. anything else is just internet talk and bias.

Imho:tapedshut

Totally agree virtual rep going your way
some are just easier to learn good technique.

 

[Bardster]

Scandi has never been a problem for me.

Personally i think it's myth that one grind is easier to sharpen than the other. Whichever grind you have you will have to learn good technique. anything else is just internet talk and bias.

Imho:tapedshut

Totally agree virtual rep going your way
some are just easier to learn good technique.

 

[Shinken]

Working out how to send virtual rep back now!

Tried but have no idea, i can do it on BB but there arent any scales here. Can anyone help?

 

[Bardster]

hehe i meant virtual - as in it dont exist cos they took the rep system down on here.