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Search took 0.01 seconds; generated 97 minute(s) ago. Search: Posts Made By: Gt Obach
Forum: Ethnographic Weapons 29th November 2006, 02:56 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi yes.. i believe the definition of wootz...

Hi

yes.. i believe the definition of wootz does wander all over the place for reasons....

ask yourself some questions...
- why does the definition wander
- why does the current definition...
Forum: Ethnographic Weapons 26th November 2006, 12:19 AM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi Ann yes.. you are correct and note... ...

Hi Ann

yes.. you are correct and note... that it seems that sorbite... is a confusing term.. ... due to it being used for both tempered martensite and pearlitic sorbite ...

i've read more...
Forum: Ethnographic Weapons 24th November 2006, 05:41 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi Metallographic examination of two...

Hi

Metallographic examination of two damascene steel blades... by Jerzy Piaskowski... 1978

no mention of Martensite but sorbitic matrix...

SORBITE:

Structure of steel, resulting from...
Forum: Ethnographic Weapons 24th November 2006, 02:09 AM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi Chris you got it -- we really need to...

Hi Chris

you got it
-- we really need to test more ancient samples..... ... despite the couple studies that were done... i still have hope for some good martensite structures.....(i've been...
Forum: Ethnographic Weapons 23rd November 2006, 08:50 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi retained austenite is alway a problem...

Hi

retained austenite is alway a problem with high alloys... especially with chromium.. .. I know Achim made a wootz with stainless levels of Cr ... and he did maintain it was tough... so i...
Forum: Ethnographic Weapons 22nd November 2006, 03:16 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi oddly... i do have abit that is suppose...

Hi

oddly... i do have abit that is suppose to be looked at.. and hopefully i'll get some good pic's from it...

but that is the problem right there... my steel is a modern crucible steel......
Forum: Ethnographic Weapons 22nd November 2006, 12:30 AM
Replies: 239
Views: 278,818
Posted By Gt Obach
I'd completely agree with that.. ... very good...

I'd completely agree with that.. ... very good points..

i will add... something here..

if you look at one factor in steel such as grain size... if you have a large grain size, the steel...
Forum: Ethnographic Weapons 30th October 2006, 02:42 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
thanks i should mention abit about the...

thanks

i should mention abit about the blade..... the ingot was designed to be 1.5% carbon...... and it was quenched into oil to harden.... ... and tempered twice in an oven to toughen it.... ...
Forum: Ethnographic Weapons 29th October 2006, 11:15 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi yes wootz has some odd fissures at...

Hi

yes wootz has some odd fissures at times...... they can arise from many reasons... from air bubbles (that why you try to keep the top of the ingot for the back of the blade )... -- maybe...
Forum: Ethnographic Weapons 28th October 2006, 07:16 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
actually... if you do a search you can find...

actually... if you do a search you can find plenty on wrought iron chain... .... -wrought iron being iron made by a reduction process in a bloom furnance... ... - a spongy bloom of iron and...
Forum: Ethnographic Weapons 28th October 2006, 06:11 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
also...... chain was usually made of wrought...

also...... chain was usually made of wrought iron.. ... and this is a soft metal.... i really doubt that steel was used for this at this time.. ( big difference )

with a decent blade......
Forum: Ethnographic Weapons 25th October 2006, 02:22 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi Chris that is basically what i said at...

Hi Chris

that is basically what i said at the beginning.... that cutting fabric only tells you about the type of edge.... there are many different types of edges... and all have their strong...
Forum: Ethnographic Weapons 19th October 2006, 07:41 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
i believe its more a matter of economy.... ...

i believe its more a matter of economy.... .... for myself.. i can't really tell much of a difference between my modern type wootz steel and 1084, W1, or 1095 steel.... but.... I can buy a...
Forum: Ethnographic Weapons 19th October 2006, 04:19 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi there are some good articles out there on...

Hi

there are some good articles out there on brittle fracture..
http://www.key-to-steel.com/default.aspx?ID=CheckArticle&NM=136

and some of the elements that affect it

just my opinion......
Forum: Ethnographic Weapons 18th October 2006, 03:18 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
Hi yes.. wootz is a funny creature.... ...

Hi

yes.. wootz is a funny creature.... if you leave it to air harden.. then you have a potential for pearlite ... and you'd let the carbides do the cutting.. (pending on the type of...
Forum: Ethnographic Weapons 18th October 2006, 02:18 PM
Replies: 239
Views: 278,818
Posted By Gt Obach
wootz was a very good steel for its time... ...

wootz was a very good steel for its time... .... but as all steels... its only as good as the smith thats forging it and more imprortantly " heat treating "

if it wasn't a good sword steel........
Forum: Ethnographic Weapons 9th October 2006, 05:49 AM
Replies: 10
Views: 8,502
Posted By Gt Obach
in terms of retained austenite..... .. to make...

in terms of retained austenite..... .. to make it simple...

1- you bring steel up to a red temperature... which will be about 1475 to 1550 F
(say for 1095 steel ).. you approach a...
Forum: Ethnographic Weapons 8th October 2006, 03:41 PM
Replies: 10
Views: 8,502
Posted By Gt Obach
Hi Jens i didn't find any brittleness with...

Hi Jens

i didn't find any brittleness with my crucible steel.... and in the winter, back home, it would reach -43 cel on occasion... ( fun time to be in the forest ;)

- i do agree that...
Forum: Ethnographic Weapons 3rd October 2006, 01:26 PM
Replies: 21
Views: 15,210
Posted By Gt Obach
thank you David my bad glad you set me...

thank you David

my bad
glad you set me straight on the etch... (its definitely not my area as i'm a wootz man :D )

however i really love the patternwelds on these kinds of blades..... i...
Forum: Ethnographic Weapons 3rd October 2006, 01:54 AM
Replies: 21
Views: 15,210
Posted By Gt Obach
i remember that awhile back there was a post on...

i remember that awhile back there was a post on renew the pattern on these blades.... I believe it was something with arsenic trioxide and lime juice......
-- think thats the more traditional way?...
Forum: Ethnographic Weapons 24th September 2006, 03:01 PM
Replies: 59
Views: 41,008
Posted By Gt Obach
thank you a good review of the work is not a...

thank you

a good review of the work is not a bad thing.. .. as i believe that writing a book is a growth experience...

critical review of the content is beneficial..... everything published...
Forum: Ethnographic Weapons 24th September 2006, 03:48 AM
Replies: 59
Views: 41,008
Posted By Gt Obach
no... i realize that a couple bad apples don't...

no... i realize that a couple bad apples don't spoil the barrel..

i guess i just got abit jumpy and had to say something about it.. .... its hard to sit back and read some of the posts......
Forum: Ethnographic Weapons 24th September 2006, 03:24 AM
Replies: 59
Views: 41,008
Posted By Gt Obach
the book is a very good one.. .. it has lots of...

the book is a very good one.. .. it has lots of valuable information...
the author is Iranian and has produced a work from his perspective ( as all authors do )

as with all books... there...
Forum: Ethnographic Weapons 4th May 2006, 02:46 PM
Replies: 1
Views: 5,942
Posted By Gt Obach
i believe if you look closely.... the groove was...

i believe if you look closely.... the groove was placed perpendicular to the barstock... and that there was some distortion when the edges were forged in.... this could easily account for the...
Forum: Ethnographic Weapons 3rd April 2006, 12:20 AM
Replies: 34
Views: 34,251
Posted By Gt Obach
Hi Jens in my opinion..... one of the...

Hi Jens

in my opinion..... one of the variables to developing a good watered pattern is working the steel .... the more heat cycles and the more forging should help to produce a nicer...
Showing results 51 to 75 of 116
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