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Bending a LM tool

nz Offline zoidberg

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Re: Bending a LM tool
Reply #60 on: February 13, 2018, 07:54:33 AM
I did want to use oil but water was there so I went with that.

Any ideas for torture tests?


be Offline Rebelgium

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Re: Bending a LM tool
Reply #61 on: February 13, 2018, 11:36:04 AM
I did want to use oil but water was there so I went with that.

Any ideas for torture tests?

Like the video posted earlier I'm going to use the bent and sharpened canopener as a spoon carving knife (which can still kind of open a can). Both functions are not ideal, I know, but I'm aiming for an ultralight wildcamping tool. And going ultralight is all about compromises.

So while using this tool there will be some bending forces applied. So the brittleness is an important factor.


I'm trying to think of a good test where the result will not be subjective. Eg "I think it felt kind of strong enough... "
Maybe cold bending it again? We know the factory steel could be bent 5mm before breaking. So if the bent tool snaps at less, we know it's harder & more brittle than factory. And vice versa


gb Offline Wspeed

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Re: Bending a LM tool
Reply #62 on: February 13, 2018, 01:37:40 PM
I did want to use oil but water was there so I went with that.

Any ideas for torture tests?
How about a twisting test? :think:
You tested piercing it on a tin can
And cold bending
So what about placing it in a vice and
Use vice grips to test how much degrees it will go :tu:
fail to prepare prepare to fail


no Offline Vidar

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Re: Bending a LM tool
Reply #63 on: February 13, 2018, 01:44:09 PM
I'm trying to think of a good test where the result will not be subjective. Eg "I think it felt kind of strong enough... "

A good test might simply be if the tool actually works as intended? Zoidbergs bend seems to work great? The process itself seems kind of variable so once you find a working piece you might want to keep it rather than destructive test it :angel:

If you have a small precise heat source (since this is a small part) you can try bending it purely with heat distortion. Draw a few parallel guidelines perpendicular to the the tool length on the inside of what will become the curving. Then apply heat along and parallel to those lines, and on that side only. If possible try to help the opposite side to stay cooler - clamping or pressing some copper or aluminium to it will help with that.

As the metal heats it will expand on the heated side and somewhat less on the cold side. The bend is then initially the wrong way, but as it cools again the heated side will also contract more than the cooler side and you'll get a bend the right way. If you heat along parallel lines it should bend fairly cleanly without twisting.

This can be a fairly slow and well controlled process. The part is quite small so you might need a jewelers torch, tig welding equipment or other means of applying controlled heat along narrow lines. The part also has some uneven thickness due to the edge so it might get somewhat twisted. Which might work out great - or not.

And last, but certainly not least, don't blame me if it all goes smurf :D
« Last Edit: February 13, 2018, 02:47:39 PM by Vidar »
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us Offline ironraven

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Re: Bending a LM tool
Reply #64 on: February 14, 2018, 01:58:34 AM
Zoidberg, it looks nutty, but it looks like... well... it was made for you. Now you have a can openning claw. What more could a happy mollusc ask for?
"Even if it is only the handful of people I meet on the street, or in my home, I can still protect them with this one sword" Kenshin Himura

Necessity is the mother of invention. If you're not ready, it's "a mother". If you are, it's "mom".

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nz Offline zoidberg

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Re: Bending a LM tool
Reply #65 on: February 22, 2018, 09:27:51 AM
Any ideas for torture tests?

Like the video posted earlier I'm going to use the bent and sharpened canopener as a spoon carving knife (which can still kind of open a can). Both functions are not ideal, I know, but I'm aiming for an ultralight wildcamping tool. And going ultralight is all about compromises.

I'm trying to think of a good test where the result will not be subjective. Eg "I think it felt kind of strong enough... "

A good test might simply be if the tool actually works as intended? Zoidbergs bend seems to work great?

Thought before it gets broken I should probably see how well it performs when carving a spoon.



After cutting a recently fallen branch down to length I used the plain blade to shape out a spoon blank.
And that is where the fun ended. First the camera battery went flat, great. Secondly the bent opener was all wrong.
Between the bevel direction, the curve, the bottle opener hook and the can opener point, it is near impossible to scoop out wood.
I stuck at it for a while but it was just an exercise in frustration.


nz Offline zoidberg

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Re: Bending a LM tool
Reply #66 on: February 22, 2018, 09:32:06 AM
Had a little time today so annealed it again and put a bevel on the outside edge. This time I hardened it in oil.



nz Offline zoidberg

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Re: Bending a LM tool
Reply #67 on: February 22, 2018, 09:34:36 AM


nz Offline zoidberg

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Re: Bending a LM tool
Reply #68 on: February 22, 2018, 09:39:14 AM
Installed and ready but waiting until I have more free time.



gb Offline Wspeed

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Re: Bending a LM tool
Reply #69 on: February 22, 2018, 01:09:14 PM
Looking good so far Zoidberg  :tu: :like:
fail to prepare prepare to fail


no Offline Vidar

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Re: Bending a LM tool
Reply #70 on: February 22, 2018, 01:34:20 PM
Had a little time today so annealed it again and put a bevel on the outside edge. This time I hardened it in oil.

(Image removed from quote.)

Looking good! I have faith  :tu:
"Simple is hard"
"Hard is hard too"
(Partial disclosure: I design tools for a living).


us Offline SteveC

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Re: Bending a LM tool
Reply #71 on: February 22, 2018, 04:51:05 PM
:popcorn:


gb Offline Wspeed

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Re: Bending a LM tool
Reply #72 on: February 22, 2018, 05:08:35 PM
fail to prepare prepare to fail


nz Offline zoidberg

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Re: Bending a LM tool
Reply #73 on: February 24, 2018, 06:40:48 AM


nz Offline zoidberg

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Re: Bending a LM tool
Reply #74 on: February 24, 2018, 06:42:02 AM






nz Offline zoidberg

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Re: Bending a LM tool
Reply #75 on: February 24, 2018, 06:43:00 AM




nz Offline zoidberg

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Re: Bending a LM tool
Reply #76 on: February 24, 2018, 06:43:37 AM






nz Offline zoidberg

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Re: Bending a LM tool
Reply #77 on: February 24, 2018, 06:45:32 AM


ie Offline Don Pablo

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Re: Bending a LM tool
Reply #78 on: February 24, 2018, 10:12:33 AM
 :like:
Hooked, like everyone else. ;)

All hail the hook!


00 Offline Mechanickal

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Re: Bending a LM tool
Reply #79 on: February 24, 2018, 11:17:12 AM
:2tu:


gb Offline Fuzzbucket

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Re: Bending a LM tool
Reply #80 on: February 24, 2018, 11:42:37 AM
Nice one!  :tu:

...but from the peach can's pov...



gb Offline Wspeed

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Re: Bending a LM tool
Reply #81 on: February 24, 2018, 12:23:01 PM
Can it still be folded back in the handle  :think: :like:
fail to prepare prepare to fail


no Offline Vidar

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Re: Bending a LM tool
Reply #82 on: February 24, 2018, 07:06:26 PM
Great - not only can it now open cans, but it can make the spoons to eat from them too! :)
"Simple is hard"
"Hard is hard too"
(Partial disclosure: I design tools for a living).


nz Offline zoidberg

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Re: Bending a LM tool
Reply #83 on: February 24, 2018, 09:08:12 PM
Can it still be folded back in the handle  :think: :like:

No, not that handle anyway. I was only testing the making of and then function. Placement wasn't asked at all.

Plus it's about to be removed so I can test Gerber, SOG and SAK openers in there.   ;)   :)
« Last Edit: February 24, 2018, 09:19:55 PM by zoidberg »


gb Offline Wspeed

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Re: Bending a LM tool
Reply #84 on: February 24, 2018, 09:15:36 PM
Can it still be folded back in the handle  :think: :like:

No, not that handle anyway. I was only testing the making of and then function. Placement wasn't asked at all.

Plus it's about to be removed so I can test Gerber, SOG and SAK openers in there.   ;)   :)
I didn't think it would  :think:
Look forward to your testing :tu: :popcorn:



zoid edit for his typo in quote.
« Last Edit: February 24, 2018, 09:21:04 PM by zoidberg »
fail to prepare prepare to fail


es Offline ThePeacent

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Re: Bending a LM tool
Reply #85 on: February 25, 2018, 03:33:41 PM
Can it still be folded back in the handle  :think: :like:

No, not that handle anyway. I was only testing the making of and then function. Placement wasn't asked at all.

Plus it's about to be removed so I can test Gerber, SOG and SAK openers in there.   ;)   :)

no need to do that,
they ain't called "Can't openers" for nothing!!  :ahhh
My toys:

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gb Offline Wspeed

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Re: Bending a LM tool
Reply #86 on: February 25, 2018, 04:01:15 PM
Can it still be folded back in the handle  :think: :like:

No, not that handle anyway. I was only testing the making of and then function. Placement wasn't asked at all.

Plus it's about to be removed so I can test Gerber, SOG and SAK openers in there.   ;)   :)

no need to do that,
they ain't called "Can't openers" for nothing!!  :ahhh
Now that's funny  :tu: :rofl: :rofl:
fail to prepare prepare to fail


nz Offline zoidberg

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Re: Bending a LM tool
Reply #87 on: February 25, 2018, 08:45:03 PM
Can it still be folded back in the handle  :think: :like:

No, not that handle anyway. I was only testing the making of and then function. Placement wasn't asked at all.

Plus it's about to be removed so I can test Gerber, SOG and SAK openers in there.   ;)   :)

no need to do that,
they ain't called "Can't openers" for nothing!!  :ahhh

Yeah I'm aware of that.


au Offline TazzieRob

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Re: Bending a LM tool
Reply #88 on: August 21, 2018, 06:00:36 AM
Necro! I just came across this after doing a search for spoon carving.

Glad to see you didn't end up with a can't opener :tu: good work zoidberg! I wonder if Rebelgium ever did his mod?

I'd think if you swapped positions of the can opener and the bit holder it would still fit in the handle without a bit? the nail nick on the can opener is pointless anyway with tool clumping and has to be opened with the bit holder.


nz Offline zoidberg

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Re: Bending a LM tool
Reply #89 on: August 25, 2018, 11:40:51 AM
Never did hear from him. One would have to mod the bit holder slightly to move it over. But yeah ditch the bit and it should fit.


 

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