Coffee Stains

kronckew · 19th March 2022, 12:46 PM

Apparently Instant coffee is more acidic than fresh ground coffee.

milandro · 19th March 2022, 02:10 PM

this is , of course, very difficult to determine.

Apparently Instant coffe and normal coffe MAY have the same acidity

https://theoldcoffeepot.com/is-insta...e-less-acidic/

however there is enormous variation and of course what works under certain conditions may be completely not apt to do the job in another.

I have heard on several videos that people prefer the cheapest possible brand of instant coffe, so the first time I used good instant ( and it worked) while the second time I used Cheap instant ( and it didn’t).

David · 19th March 2022, 07:51 PM

Thanks for that video Milandro!

milandro · 19th March 2022, 07:56 PM

cheers,

there are a few more on the subject but none show this method being used on an older kris , all of the videos seem to feature newly forged knives where the damascus pattern is achieved with a known type of steel containing nickel together with steel not containing nickel but I suppose that the composition of traditional metal may have differed considerably from the ones used by modern and mostly western blacksmiths.

this other video seems to use a more scientific approach.
https://www.youtube.com/watch?v=971gfUZLC_0

kronckew · 19th March 2022, 09:44 PM

Quote:

Originally Posted by milandro

...
this other video seems to use a more scientific approach.
https://www.youtube.com/watch?v=971gfUZLC_0

Cool. Surprising end result! Thanks for that one!

milandro · 6th June 2022, 09:43 AM

I have been sending some krises to be washed in warangan recently but I had one that I wanted to try to stain with coffee again.

I tried , after bringing the blade to a clean, after putting into coffee for 5 days the blade took a general , slightly, darker appearance with very very very faint staining here and there (although there probably was no “ pamor” to speak of).

Frankly speaking this is definitely my last attempt at staining a kris balde with coffee. It is simply not worth the effort and time.

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19th March 2022, 12:46 PM	#1
kronckew Member Join Date: Mar 2006 Location: Room 101, Glos. UK Posts: 4,225	Apparently Instant coffee is more acidic than fresh ground coffee.

19th March 2022, 02:10 PM	#2
milandro Member Join Date: Jan 2022 Location: Netherlands Posts: 492	this is , of course, very difficult to determine. Apparently Instant coffe and normal coffe MAY have the same acidity https://theoldcoffeepot.com/is-insta...e-less-acidic/ however there is enormous variation and of course what works under certain conditions may be completely not apt to do the job in another. I have heard on several videos that people prefer the cheapest possible brand of instant coffe, so the first time I used good instant ( and it worked) while the second time I used Cheap instant ( and it didn’t).

19th March 2022, 07:51 PM	#3
David Keris forum moderator Join Date: Aug 2006 Location: Nova Scotia Posts: 7,219	Thanks for that video Milandro!

19th March 2022, 07:56 PM	#4
milandro Member Join Date: Jan 2022 Location: Netherlands Posts: 492	cheers, there are a few more on the subject but none show this method being used on an older kris , all of the videos seem to feature newly forged knives where the damascus pattern is achieved with a known type of steel containing nickel together with steel not containing nickel but I suppose that the composition of traditional metal may have differed considerably from the ones used by modern and mostly western blacksmiths. this other video seems to use a more scientific approach. https://www.youtube.com/watch?v=971gfUZLC_0

6th June 2022, 09:43 AM	#6
milandro Member Join Date: Jan 2022 Location: Netherlands Posts: 492	I have been sending some krises to be washed in warangan recently but I had one that I wanted to try to stain with coffee again. I tried , after bringing the blade to a clean, after putting into coffee for 5 days the blade took a general , slightly, darker appearance with very very very faint staining here and there (although there probably was no “ pamor” to speak of). Frankly speaking this is definitely my last attempt at staining a kris balde with coffee. It is simply not worth the effort and time.