wildcat wrote:so it looks like as long as you don't take them off the blades you can prolly re-use them. correct?
is there a supplier of these?
As long as you don't cut the Swinden rivet you can use the whole inner assembly over again, as long as the tolerances are still right. If the blade had a bit of wobble to it, then you will have to cut the rivets & use the pin-through-bolster method.
If I am just putting new handles on a otherwise good knife, then I do reuse the Swinden assembly and it works great. All you have to do is replace the rocker (center) pin. But once you cut either of the Swinden rivets, you have to drill out both bolsters and convert it to pin-through-bolster.
According to the info I have, i.e. from LT, Schrade was the only company to use the Swinden Key system. Dave Swinden, who worked for them for many years & invented the system. IIRC, he is one of the principals of Canal Street Cutlery now.
LT has seen the equipment used in making knives with the Swinden Key knives. I guess it is very impressive. I can see how it would be an advantage in manufacturing on a large scale (as Schrade did) but it does not simplify the repair process, not unless you have the machinery to set them up. It was easy for Schrade because they had the equipment, but everyone else struggles with them.
Schrade made 2 or 3 patterns of slipjoints for Buck. Buck said, “These are great, excellent quality, but can you loose the Swinden Key so we can repair them in our factory?” Schrade said “No.” So Buck took those patterns to someone else to have them made, probably Camillus.
I've done a few swinden key knives (12ot's, 34ot's). It's a nice system if you can work around it.
Oh, and Dale's method of splitting a knife apart displayed here, top notch awesome.
Thank you Darksev!
I am glad it worked for you.
To the best of my knowledge the only Swinden machinery was at Schrade. I don’t know where it is after the sale. The process is technical enough that I doubt anyone else would want to use it, without the system in place to manufacture the pieces necessary to assembly the knives. I can’t think of any American manufacturer (now days) who makes enough slipjoints to make the necessary investment profitable.