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Post by Deleted on Mar 18, 2009 19:50:49 GMT
Empties are definitely more fun to cut than water filled.
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Avery
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"It's alright little brother... There are more!!!
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Post by Avery on Mar 19, 2009 12:45:44 GMT
personally, my method involves a plunger and a lot of olive oil. but I'm a sailor, you may want to develope your own method. Boy is this quote going to haunt you!! back to the question, I use just plain old cold tapwater.
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Post by Deleted on Mar 19, 2009 18:54:10 GMT
Normally I use cold tap water. I did fill a couple of bottles with hot water as it was cold and humid out (just prior to a snowfall). The result was a pretty cool cloud of steam when the bottles were cut. I did not notice any difference in the resistance of the bottles.
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Post by Deleted on Mar 29, 2009 18:01:42 GMT
i tried cold again and the bottles cut the same, but they felt slightly different. after that i think that over long periods of time cold will dull the sword more
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Post by Deleted on Mar 29, 2009 20:19:44 GMT
That doesn't make much sense. You're still cutting plastic of the same density as if you were cutting a bottle with warm water in it.
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Post by Deleted on Mar 29, 2009 21:36:25 GMT
That doesn't make much sense. You're still cutting plastic of the same density as if you were cutting a bottle with war water in it. not true, it is softer plastic
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Post by Deleted on Mar 29, 2009 23:39:45 GMT
Warm or cold? I don't know why you'd waste time warming up water only to splash it all on the ground anyway. As for the plastic I'd have to say though that Cole is correct in that very hot water can and does cause the plastic in 20 oz. bottles to soften slightly. Having just tried it to see whether he was just loopy or if there was actually merit in his claims I can say I've felt with my hands (by touching the bottle and squeezing) and with my sword (through cutting) that the plastic feels softer. I don't think it makes the bottle any easier to cut though just more pliable.
In the end I doubt that there's any true benefit to heating up water - in fact there's the drawback of wasting energy to heat that water. If you were filming your cuts in cold weather and wanted some cool effects from the water for the film then perhaps you'd heat it up. Other than that no real reason to do so and a good reason not to do so - the cost of heating up that water.
All of that aside I don't see why you would need to make the plastic bottles any easier to cut. Its not like they offer a lot of resistance to begin with and Ken is correct in that you're still cutting through the same density plastic - kinda I guess hardcore physicists/chemists would argue that the added heat causes the plastic to expand and thus reducing the density of the plastic itself but the measurable amount is so minute that to the rest of the world its the same density. In any case I doubt that it has any real effect on how rapidly your sword loses its sharpness. Now on the other hand if you're hitting your sword on your stand every time you cut it might be a good cause for your sword to dull quickly - but that's not what we're talking about huh?
In short after a very long post -
I've always cut with cold water and don't see a reason to do so with warm or hot water.
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Post by Deleted on Mar 29, 2009 23:58:46 GMT
You would have to bake the plastic bottle in the oven to change the density of the plastic drastically enough to make a difference when cutting. It takes some 400 degrees to melt a plastic bottle.
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Post by Deleted on Mar 30, 2009 0:46:42 GMT
That doesn't make much sense. You're still cutting plastic of the same density as if you were cutting a bottle with war water in it. Yea! War water. It's what real men drink!!
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Post by Deleted on Mar 30, 2009 0:48:50 GMT
lol yes buy your war water today, sold in your battlefield variety canteen; including battle damaged harness.
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Post by Deleted on Mar 31, 2009 17:26:39 GMT
In actuallity, I think cutting warm plastic would be harder than cold. Warm plastic tends to deform rather than cut, making your form much more important. Taken to an extreme, bottles dipped in liquid nitrogen could probably be "cut" with a butter knife! Very cold plastic has a tendency to crack at the slightest impact. Of course, this is not actually "cutting" but it would take a very high speed camera to see this happening during a cut. Maybe examining the bottles afterward would expose a difference. In any event, I wouldn't use my swords to cut bottles frozen with water in them. That's gotta be hard on the blade edge!
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Post by shadowhowler on Mar 31, 2009 18:49:03 GMT
I wouldn't use my swords to cut bottles frozen with water in them. That's gotta be hard on the blade edge! Someone did that recently... there is a thread about it somewhere around here...
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