Fullered Moro Kris Blade question

zelbone · 29th May 2006, 05:24 PM

Weight reduction.

punal · 29th May 2006, 05:51 PM

Nechesh, Zel, thanks for the info, but aren't you guys supposed to be barbecueing outside for the holidays instead of starring at your monitors

ariel · 29th May 2006, 06:41 PM

The purpose of fullers is threefold:
1. The make the blade lighter. The energy is proportionate to the mass of the blade times square of velocity with which it is wielded ( just like any other energy, including the famous Einsteinian equation

). Thus, a small sacrifice in the mass of the blade allows the swordsman to move it faster, thus increasing the energy of the cut. An example: decrease the mass from 2 to 1, and increase the speed from 2 to 4 (same proportion): the energy of the blow increases twofold.
2. Creation of fullers increases the surface length of the tranverse section. This increases it's rigidity (less bendable) The fuller creates a section of a semi-pipe, and we all know that it is much easier to bend a solid piece of metal than a pipe of the same diameter. this is why several narrow fullers are mechanically better than a single wide one. The same principle applies to the "T-spine".
3. To serve as "blood grooves", but only in horror movies

MABAGANI · 29th May 2006, 07:19 PM

weight and balance control, rigidity to some degree but not true for all, multiple narrow fullers for weight and balance are still flexible

nechesh · 29th May 2006, 08:29 PM

Quote:

Originally Posted by punal

Nechesh, Zel, thanks for the info, but aren't you guys supposed to be barbecueing outside for the holidays instead of starring at your monitors

LOL! Well yes, probably, but i got stuck working so i checked in on the forum. No one else in the office to watch me.

Thanks for that info Zel and Mabagani. Something i never knew. This explanation wouldn't, however, explain similar fullers on the smaller Indo keris (i.e. keris carita and certain Balinese and Javanese blades), so i wonder still.

Rick · 30th May 2006, 01:53 PM

Art for art's sake David ?

BluErf · 30th May 2006, 02:10 PM

I think the fullers on the smaller indonesian/malay kerises would still serve a weight reduction purpose. It never hurts to have a lighter and quicker thrusting keris.

Punal - did you polish your krises personally? I think you did a great job! Shows that you are really patient and meticulous.

punal · 30th May 2006, 07:30 PM

Quote:

Originally Posted by BluErf

I think the fullers on the smaller indonesian/malay kerises would still serve a weight reduction purpose. It never hurts to have a lighter and quicker thrusting keris.

Punal - did you polish your krises personally? I think you did a great job! Shows that you are really patient and meticulous.

yes, i hand polished them my self. thanks

nechesh · 31st May 2006, 01:24 AM

Hi Punal. Would you mind sharing you method of blade polishing?

29th May 2006, 05:24 PM	#1
zelbone Member Join Date: Dec 2004 Location: VISAYAS and MINDANAO Posts: 169	Weight reduction.

29th May 2006, 05:51 PM	#2
punal Member Join Date: Aug 2005 Posts: 91	Nechesh, Zel, thanks for the info, but aren't you guys supposed to be barbecueing outside for the holidays instead of starring at your monitors

29th May 2006, 06:41 PM	#3
ariel Member Join Date: Dec 2004 Location: Ann Arbor, MI Posts: 5,503	The purpose of fullers is threefold: 1. The make the blade lighter. The energy is proportionate to the mass of the blade times square of velocity with which it is wielded ( just like any other energy, including the famous Einsteinian equation ). Thus, a small sacrifice in the mass of the blade allows the swordsman to move it faster, thus increasing the energy of the cut. An example: decrease the mass from 2 to 1, and increase the speed from 2 to 4 (same proportion): the energy of the blow increases twofold. 2. Creation of fullers increases the surface length of the tranverse section. This increases it's rigidity (less bendable) The fuller creates a section of a semi-pipe, and we all know that it is much easier to bend a solid piece of metal than a pipe of the same diameter. this is why several narrow fullers are mechanically better than a single wide one. The same principle applies to the "T-spine". 3. To serve as "blood grooves", but only in horror movies

29th May 2006, 07:19 PM	#4
MABAGANI Member Join Date: Dec 2004 Posts: 221	weight and balance control, rigidity to some degree but not true for all, multiple narrow fullers for weight and balance are still flexible

30th May 2006, 01:53 PM	#6
Rick Vikingsword Staff Join Date: Nov 2004 Posts: 6,347	Art for art's sake David ?

30th May 2006, 02:10 PM	#7
BluErf Member Join Date: Dec 2004 Location: Singapore Posts: 1,180	I think the fullers on the smaller indonesian/malay kerises would still serve a weight reduction purpose. It never hurts to have a lighter and quicker thrusting keris. Punal - did you polish your krises personally? I think you did a great job! Shows that you are really patient and meticulous.

31st May 2006, 01:24 AM	#9
nechesh Member Join Date: Dec 2004 Location: Cincinnati, OH Posts: 940	Hi Punal. Would you mind sharing you method of blade polishing?