Archaic kris for comment

[xasterix]

Kai- thanks very much for your thorough metallurgical assessment and your gut-feel on age estimate!

Interestingly, you're the second person to posit that it may be a "revival" blade; a good friend of mine who's a museum curator had the same view. Compared to other archaic krises I've encountered- this kris has a pretty solid and non-flexible blade. It also has heft, unlike archaic krises which are usually light (sometimes ridiculously so).

I agree with your quench-line theory- that would explain why a bit of pattern in one of the sides still managed to spill over the line.

[JBG163]

The best way to know would be to have it polished and etched. The difference of color would be blatant. I supposed earlier that it could be quench but, more test would be necessary to be perfectly sure.

Still, keeping it in his current state is also a good thing. Especially for datation. It's all a balance and up to you asterix.

My knowledge in Kriss isnt deep enough to assess a revival style. So i entirely relay on Kai for his datation

An impressive sword in any case

[xasterix]

Originally Posted by JBG163

The best way to know would be to have it polished and etched. The difference of color would be blatant. I supposed earlier that it could be quench but, more test would be necessary to be perfectly sure.

Still, keeping it in his current state is also a good thing. Especially for datation. It's all a balance and up to you asterix.

My knowledge in Kriss isnt deep enough to assess a revival style. So i entirely relay on Kai for his datation

An impressive sword in any case

I forgot that it was you that originally posited the quench-line theory- thanks for that again, and also for your kind words!

I'll be doing an FeCl etch in the near future- I'll update this thread by then with clear and close-up pics

[JBG163]

Originally Posted by xasterix

I forgot that it was you that originally posited the quench-line theory- thanks for that again, and also for your kind words!

I'll be doing an FeCl etch in the near future- I'll update this thread by then with clear and close-up pics

No need to clair i'm first or not . Just couldnt be sure with the current state.
If you plan to etch, a good préparation would probably be requiered as the bottom of the blade looks quite pitted.

Kai, do you have encountered any exemple with a quench line like this ?

[kai]

Hello Julien,

Kai, do you have encountered any exemple with a quench line like this ?

Not that I can remember, not that crisp and all over the blade, i believe.

And regarding the dating: As said, it's more of a hunch and needs serious research.

Regards,
Kai

[kai]

Hello Xas,

I'll be doing an FeCl etch in the near future- I'll update this thread by then with clear and close-up pics

I'm not a big fan of ferric chloride - etching with it tends to be quite brutal to the surface and it's acting so fast that fine structures tend to be missed.

If you intend to polish the blade anyway, a quick & dirty exploratory etch with FeCL3 could help to show some details before you start the actual polishing.

You need a good polish to reveal finer structures. And a gentle/slow metallurgical etch to bring out the details without dulling the surface. Arsenic trioxide used in a traditional rub-on fashion works as do a number of more available modern etchants. I'd probably lean towards warm sodium persulfate; I can't claim to have tested most etchants though - doing this side by side on a representative test piece is still on my ever-growing to do list.

Regards,
Kai

[David]

Originally Posted by kai

Arsenic trioxide used in a traditional rub-on fashion works as do a number of more available modern etchants.

Correct me if i am wrong here, but from my understanding arsenic trioxide isn't an etchant at all. It's function when used in the warangan mixture to stain a keris is that it turns iron and steel black while not effecting nickelous material in the pamor. That is how it raises the pamor pattern. It is the acid in the lime juice part of the mixture that acts as a gentle etchant.
I don't really know what causes the lines to appear in a twist core Moro kris, but if it is not the inclusion of nickel in the mix i don't think arsenic would be an effective way to raise the appearance of the lines in the twist.

[JBG163]

But an etchant would bring out the quench. And you would see a difference between the quenched zone and the "unquenched" one

[Rick]

An xray might be interesting to see. Know anyone who works in a hospital or Dentist's office?

[kai]

Hello Julien,

But an etchant would bring out the quench. And you would see a difference between the quenched zone and the "unquenched" one

Yes, any difference in final composition (steel alloy, heat treatments, etc.) will show up by etching/staining.

Regards,
Kai

[kai]

Hello David,

Correct me if i am wrong here, but from my understanding arsenic trioxide isn't an etchant at all. It's function when used in the warangan mixture to stain a keris is that it turns iron and steel black while not effecting nickelous material in the pamor. That is how it raises the pamor pattern. It is the acid in the lime juice part of the mixture that acts as a gentle etchant.

Yes, I was referring to the traditional mixture of arsenic with lime juice. And, for brevity, I wasn't differentiating between etching and staining.

Any etching/staining result will not only be affected by the steel alloys (possibly containing different amounts of nickel, phosphorous, etc.) but as well from differences in heat treatment, especially quenching.

I don't really know what causes the lines to appear in a twist core Moro kris, but if it is not the inclusion of nickel in the mix i don't think arsenic would be an effective way to raise the appearance of the lines in the twist.

In most cases, Moro "twistcore" blades will have been crafted from layering mild steel and another steel with noticeable nickel content (probably from Luwu?), indeed.

Regards,
Kai

[David]

Originally Posted by kai

Hello David,


Yes, I was referring to the traditional mixture of arsenic with lime juice. And, for brevity, I wasn't differentiating between etching and staining.

Any etching/staining result will not only be affected by the steel alloys (possibly containing different amounts of nickel, phosphorous, etc.) but as well from differences in heat treatment, especially quenching.



In most cases, Moro "twistcore" blades will have been crafted from layering mild steel and another steel with noticeable nickel content (probably from Luwu?), indeed.

Regards,
Kai

Well Kai, i think you really have to differentiate between etching and staining because they are not the same thing at all. Actually i don't think all that much etching takes place during the staining process with warangan anyway. Most of the etching with keris takes place during the pre-staining "cleaning" processes when either fruit acids or coconut water are used to remove rust and bring the blade to "whitened" condition.
I was not arguing that there is not nickel in the steel of this archaic Moro blade. But by my understanding the patterns created here are not done by the same process that is used to create keris with pamor. There is not pamor used in this archaic blade as far as i know. There may very well be some nickel content in some of the iron used though. But frankly i don't know. I am curious to know how you know this though. Can you cite a source for this information?

[milandro]

Originally Posted by xasterix

I forgot that it was you that originally posited the quench-line theory- thanks for that again, and also for your kind words!

I'll be doing an FeCl etch in the near future- I'll update this thread by then with clear and close-up pics

Hello Xasterix, I was wondering wether you ever followed up with a FeCl treatment.

I am thinking of asking a blacksmith to do this with my Moro Maguindanao Kris and wanted to see what the effects are. I don't have the facilities to do this myself. How, if you did, did you you go about protecting the hilt from the FeCl?


I look forward to see your answer hoping that you get an alert from the forum after my quoting your post from last year

[kai]

Hello Milandro,

As mentioned above (post #21), I'm not favouring etching with ferric chloride. The stain will often exhibit pretty warm colors (i.e. rusty), sometimes after some time only.

Even if one has experience in its use on modern pattern-welded blades, there is a chance that leftover chloride ions will keep nagging on a blade, especially with antique blades that are more likely to have crevices from cold shuts, eroded surfaces, etc.

Pretty much all Moro aficionados are nowadays utilizing warm diluted acetic acid. While the resulting pattern will be more subdued, it certainly seems close enough to what real user blades probably looked like.

Regards,
Kai
(BTW, I see that I failed to answer David's post - will do ASAP)

[milandro]

Cheers Kai,

I realise that the topic of staining is controversial .

Since I have never seen a Kris blade (Moro or otherwise) which has been stained with FeCl, I took the chance offered in this thread to see how one would have looked like.

Since Xasterix announced the staining (staining which was " to come" at that time) of this blade in FeCl and the intention to post pictures as a follow up : ".... I'll be doing an FeCl etch in the near future- I'll update this thread by then with clear and close-up pics ..."

I was wondering if this had happened and if we could partake of the results.

I have seen several pictures of blades stained in vinegar and, for comparison, would be very educative and informative for all to see the difference between the two (of course , Ideally one would have to see it on the same blade but also two similar one would be the next best thing)

[kai]

Yes, I may be the culprit in dissuading Ray to move forward...

We had some Moro blades treated with ferric chloride here in the forum (if not findable with a search, possibly in the defunct UBB forum). I'm going to PM you examples that I can't post here, Milandro.

Regards,
Kai

[xasterix]

Hullo Milandro! Sorry it took me a while to get back. I didn't FeCl the kris anymore. As chance would have it, I was able to contact a descendant-relative of the original Maguindanaon owner, and upon realizing the value of that pusaka, they expressed that they would like to acquire it in memory of their ancestral lineage. As much as I want to keep it (who won't want to keep a twistcore, right), out of goodwill I let them acquire it from me. That's one less twistcore for me, but at least a family reclaimed its pusaka.

Anyhow- I've been experimenting a bit, and my current preference is a mix-
1. Mirror polish then FeCL, stabilize
2. I immerse a white vinegar-filled tube with old brass for around 2 hours
3. I dip the blade for around 30 mins (as a second etch), stabilize

So far I'm pleased with the results. It doesn't show up that clearly in my pics, but there's a golden tone to the etch in certain places (due to the brass residue). Here's some pieces I did that progression with.