Help me with the canopener.

[NirreBosse]

I have now carried my Kutmaster scout almost a full day and my questions ar gathering

I have tightened the construktion from play and made my blade sharp. the knife had a extreamly wellused blade in that way i think it was never sharpened but often used and so to say butterknife dull, but that is history now. My next stop will be the awl as also that blade is rounded dull. I know how I want it and will sharpen it to a good sharpness.
BUT
The knife has a canopener in a syle I newer used before, kind of a rounded belly edge without a hook. I dont understand how to use it at all at this point but it was surely used before as it is as dull as the other blades was. The original owner was for sure a knifeuser.
Question: I hope some one understands how the canopener looks and can tell me how sharp it should be. No problem to make also that blade shave but should it be that way or is it benefitted by having another kind of edge.
The bottleopener scredriver is just fine and I want to keep this a slow process since It has a nice patina to preserv. With oiled joints I believe this knife to hold up a long time.

Bosse

 

[screened porch]

Is it like these? The top one is a Kutmaster, the lower an imperial. I think you must have to stab the blade in, then rock on the hollow in the back and cut upward. Just a theory though.

 

[screened porch]

d e l e t e

 

[NirreBosse]

Yes, that is how it looks. How sharp should it bee. If it inklude stabbing I,m not impressed on the design. Anyone using it that way in these days?

Bosse

 

[pinnah]

Yes, that is how it looks. How sharp should it bee. If it inklude stabbing I,m not impressed on the design. Anyone using it that way in these days?

Bosse

...which is why nobody uses that design anymore.

Come to think of it, how often do you really need a can opener?

 

[screened porch]

...which is why nobody uses that design anymore.

Come to think of it, how often do you really need a can opener?

Not often, which is why I prefer the Victorinox opener with the extra screwdriver to the Wenger that opens cans better. But some cans do need an opener, and it's nice to have one when faced with such.

Ever read Three Men in a Boat, by Jerome K. Jerome? They forgot their can-opener.
"Then George ... knocked [the can] into a shape so ... unearthly in its wild hideousness, that he got frightened and threw [it] [into the middle of the river]."
(freely adapted from the original)


As for how sharp, I'd say not very; I mean it should come to an edge, but with a broad bevel. Again, I'm guessing. I hope someone old and wise will chip in before we hurt ourselves with these things.

 

[Obsessed with Edges]

Not often, which is why I prefer the Victorinox opener with the extra screwdriver to the Wenger that opens cans better. But some cans do need an opener, and it's nice to have one when faced with such.

Ever read Three Men in a Boat, by Jerome K. Jerome? They forgot their can-opener.
"Then George ... knocked [the can] into a shape so ... unearthly in its wild hideousness, that he got frightened and threw [it] [into the middle of the river]."
(freely adapted from the original)


As for how sharp, I'd say not very; I mean it should come to an edge, but with a broad bevel. Again, I'm guessing. I hope someone old and wise will chip in before we hurt ourselves with these things.

Considering what a can opener was designed for, it's a good thing they aren't that sharp. We wouldn't ordinarily subject our shaving-sharp, thinner-edged blades to the task of punching & cutting metal. The edges on can openers are just sharp enough and hardened to a lower RC (avoids chipping), and the well-designed versions work well within those limitations. A 'tin' can is still very soft compared to even a low-RC steel opener, so it can still get the job done.