Boar sword cross bar

[kronckew]

Originally Posted by Foxbat

Thread-cutting machine tools - yes, later, and yes, the screw thread can be cut by hand, but the internal, female one requires a tap of some kind.

I presume these developments have been studied and documented, I would be curious to see them.

a tap is just a hardened screw with lengthwise channels cut in it for the shavings. as i mentioned, the male screws in wheel locks would have engaged matching tapped female ones. they would not have made individual screws with a file. they'd make a tap, then drill a hole, tap it and cut channels inside or drill holes partly overlapping the threaded hole to make a die. then harden it, and then make zillions of screws with the die, and tap zillions of holes with the tap, all closely matching & mating (till the taps & dies wore down, then they'd make new ones)

the spring bar latching one would be easier to make. they don't need to be particularly tight and immoveable to work as intended as long as they don't easily come off.

here's some we made earlier (my uncle was a master tool and die maker)

[Foxbat]

Yes, I know what the tap is, I have tons of them in my workshop. I guess my question is - if it is generally understood that a nut-and-bolt pair was not uncommon in the early 16th century, then this approach can be viable. However, generally speaking, screws on weapons became common in the 18th century - usually attaching the guard to the pommel.

In reality I might make two versions, one with the screw, and the other one with the spring.

[kronckew]

Originally Posted by Foxbat

Yes, I know what the tap is, I have tons of them in my workshop. I guess my question is - if it is generally understood that a nut-and-bolt pair was not uncommon in the early 16th century, then this approach can be viable. However, generally speaking, screws on weapons became common in the 18th century - usually attaching the guard to the pommel.

In reality I might make two versions, one with the screw, and the other one with the spring.

be creative & don't forget to post photos these swords are i gather, rather uncommon and those with crossbars even more so.

p.s. if you look at a tap and die set with shaving channels that match the width of the cutting teeth on the matching piece, you can see where some bright spark figured out the interrupted thread breech used on artillery breech loaders and even bolt action rifles and some automatics mid 19c and to now.