Cut steel decorations on Indian arms

mariusgmioc · 29th October 2019, 08:51 AM

Soldering does not provide enough mechanical strength. While stronger than solder, silver brazing is still not strong enough. But here it can be opened a long discussion about the strength of a joint as it depends on many factors (area of the joint surface, what kind of forces is it subjected to - bending, torsion, shearing, etc.).

Brazing is normally using bronze for filler material and is strong enough to be used for weapons... but it cannot be subjected to strong shocks (smaller shocks and vibrations are jot a problem, but you definitely cannot braze a blade to a hilt and expect it to withstand shocks resulted from real use). I am not aware of brazing being used in any antique weapons production, maybe because of its low resistance to shocks, and in my oppinion all blades that have signs of brazing were subject to later repairs, and are not fit for use anymore.

I suspect that some katars are made through welding, by joinig separate parts when they are in red hot semi-molten state. Then, providing the joined parts are of same material and forging temperature is high enough, the joints would be invisible.

Maybe...

kronckew · 29th October 2019, 09:54 AM

My katar has a blade carrier section with a rapier blade tip inserted and riveted. the carrier section was tabbed and inserted into corresponding square holes in the curved crossbar, they appear to have either been shrink fitted and peened or forge welded together. Very hard to see as it has cut steel decorations and cross hatching, but there appear to be 5 tabs you can make out, less noticeable in the photos tho.

29th October 2019, 08:51 AM	#1
mariusgmioc Member Join Date: Sep 2014 Location: Austria Posts: 1,906	Soldering does not provide enough mechanical strength. While stronger than solder, silver brazing is still not strong enough. But here it can be opened a long discussion about the strength of a joint as it depends on many factors (area of the joint surface, what kind of forces is it subjected to - bending, torsion, shearing, etc.). Brazing is normally using bronze for filler material and is strong enough to be used for weapons... but it cannot be subjected to strong shocks (smaller shocks and vibrations are jot a problem, but you definitely cannot braze a blade to a hilt and expect it to withstand shocks resulted from real use). I am not aware of brazing being used in any antique weapons production, maybe because of its low resistance to shocks, and in my oppinion all blades that have signs of brazing were subject to later repairs, and are not fit for use anymore. I suspect that some katars are made through welding, by joinig separate parts when they are in red hot semi-molten state. Then, providing the joined parts are of same material and forging temperature is high enough, the joints would be invisible. Maybe... Last edited by mariusgmioc; 29th October 2019 at 09:22 AM.

29th October 2019, 09:54 AM	#2
kronckew Member Join Date: Mar 2006 Location: Room 101, Glos. UK Posts: 4,215	My katar has a blade carrier section with a rapier blade tip inserted and riveted. the carrier section was tabbed and inserted into corresponding square holes in the curved crossbar, they appear to have either been shrink fitted and peened or forge welded together. Very hard to see as it has cut steel decorations and cross hatching, but there appear to be 5 tabs you can make out, less noticeable in the photos tho. Attached Images