Pattern-welded (twist core) Budiak

migueldiaz · 15th November 2010, 03:41 AM

Quote:

Originally Posted by Battara

Yes what drives me nuts about these pictures is the false coloring!

I will even photocopy these in black and white to try to bring them back to reality for study.

Whew! Thanks. So those Moros did not wear pink pants after all

If you are using Windows, Irfanview is a free app that can easily convert to greyscale any color photo (among many other tricks up its sleeves).

Battara · 15th November 2010, 03:45 AM

Thanks may try that it (hope it works on a Mac!

).

migueldiaz · 15th November 2010, 06:03 AM

Quote:

Originally Posted by Battara

Thanks may try that it (hope it works on a Mac!

).

I use a Mac, too. In that case it'll be even easier. Open the pic in iPhoto, and then click "Effects", as illustrated

Battara · 15th November 2010, 04:03 PM

Salamat Po Bro!

Lee · 15th November 2010, 04:46 PM

Photoshop attempt:

Lee · 16th November 2010, 04:40 PM

It turned out that I was only about halfway in separating the components when I made my last post. It turned out there was a deep vein of epoxy still binding tang to wood and the silver foil sleeve. An eight hour soak in methyl ethyl ketone (MEK) would penetrate and soften about a millimeter thickness of the epoxy with further softening not observed from a longer soak. The weakened epoxy could then be scraped away with a dissecting needle and the cycle repeated for days. The old tar-like material, still tacky in places, but mostly dried, originally securing the blade in place was much more vulnerable to the MEK and the tang finally released. Soaking of the wood and silver continued until I could no longer reach the remaining epoxy between the silver and the wood. At this point I gave it a bit of time to dry and applied heat with a kitchen stove-top burner. The MEK residue still lit a couple of times. Finally the remaining epoxy failed and I got the silver tube free from the remains of the shaft. The silver tube went off to Battara and I suspect he had been expecting something more substantial - this silver was really more a silver foil - thicker than kitchen aluminum foil but not nearly as thick as the wall of a typical food can. The torn areas were a bit too distorted for recovery, so we decided to sacrifice about an inch of this area as the design was in a helix and repeated.

In due course I hope to get this on a pole, leaving a hidden backing of copper seamless tube beneath the silver sleeve. It is nice to have gotten the wood out reasonably intact to see how the blade was mounted - the tarry substance was doing most of the work - unfortunately, the wood is unlikely to provide further clues of its origin.

Rick · 16th November 2010, 08:10 PM

I believe the third man from the right in the group picture posted above holds a spear with a similar head to Lee's example .

Good patient job with the MEK Lee .

I'll pray for your Liver ...

15th November 2010, 04:46 PM	#5
Lee EAAF Staff Join Date: Nov 2004 Location: Upstate New York, USA Posts: 932	Most interesting images ... thank you! Photoshop attempt: Attached Images

16th November 2010, 04:40 PM	#6
Lee EAAF Staff Join Date: Nov 2004 Location: Upstate New York, USA Posts: 932	Follow-up It turned out that I was only about halfway in separating the components when I made my last post. It turned out there was a deep vein of epoxy still binding tang to wood and the silver foil sleeve. An eight hour soak in methyl ethyl ketone (MEK) would penetrate and soften about a millimeter thickness of the epoxy with further softening not observed from a longer soak. The weakened epoxy could then be scraped away with a dissecting needle and the cycle repeated for days. The old tar-like material, still tacky in places, but mostly dried, originally securing the blade in place was much more vulnerable to the MEK and the tang finally released. Soaking of the wood and silver continued until I could no longer reach the remaining epoxy between the silver and the wood. At this point I gave it a bit of time to dry and applied heat with a kitchen stove-top burner. The MEK residue still lit a couple of times. Finally the remaining epoxy failed and I got the silver tube free from the remains of the shaft. The silver tube went off to Battara and I suspect he had been expecting something more substantial - this silver was really more a silver foil - thicker than kitchen aluminum foil but not nearly as thick as the wall of a typical food can. The torn areas were a bit too distorted for recovery, so we decided to sacrifice about an inch of this area as the design was in a helix and repeated. In due course I hope to get this on a pole, leaving a hidden backing of copper seamless tube beneath the silver sleeve. It is nice to have gotten the wood out reasonably intact to see how the blade was mounted - the tarry substance was doing most of the work - unfortunately, the wood is unlikely to provide further clues of its origin. Attached Images

15th November 2010, 03:45 AM	#2
Battara EAAF Staff Join Date: Dec 2004 Location: Louisville, KY Posts: 7,272	Thanks may try that it (hope it works on a Mac! ).

15th November 2010, 04:03 PM	#4
Battara EAAF Staff Join Date: Dec 2004 Location: Louisville, KY Posts: 7,272	Salamat Po Bro!

16th November 2010, 08:10 PM	#7
Rick Vikingsword Staff Join Date: Nov 2004 Posts: 6,336	I believe the third man from the right in the group picture posted above holds a spear with a similar head to Lee's example . Good patient job with the MEK Lee . I'll pray for your Liver ...