Screws with no visible slot

how long till this shows up on a folder?

A long time, if ever.

The speaker already says that the prototype is very expensive to make and you can see that it is very large and heavy (which is why he's just talking about using it in furniture) .

It's also unclear whether it's feasible to reduce the size/wt of the screw enough so that it can actually be used in making a knife and, if it does become possible, my guess is that it would most likely be used to make a fixed blade rather than folder.

It would be very cool/trick if it could be used to be make a knife but I wouldn't hold my breath waiting for one and, of course, if they actually make 1 small enough to use on a knife, I assume they'll also include the screw bit necessary to make use of it.
 
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Given the fact that so many love to take their knives apart to clean and maintain them, I doubt that will make an appearance on folders.

As for fixed blade construction, what would be the point? We already have corby bolts that can be used to speed assembly and help tame warped scales during construction. They are easily sanded off to have the appearance of a rivet or pin (as that would appear in a fixed blade handle) while providing the ease of use with a screwdriver slot as needed. Unless it is a utility type knife, it is pretty rare that a fixed blade needs to have its scales replaced, and on the current offerings of military style knives that have changeable/replaceable scales, those screws could cost more than the knife.

I am wrong about a lot things, but don't see the utility or cost to value merit of that since the author of the video readily admits it is very expensive. So with no practical use and a high cost, the need of a special tool to use the part, doubtful we will be seeing it in the knife world.

As for furniture, etc., I have put together Danish style furniture in the past that uses that type of bolt, but with no slots, keys. The bolt head looked the same, but it came with a wrench that had a half moon shape that was half the size of the bolt head. At the end of the open head there was a hardened pin, and you put the pin in the bolt into a receiver hole that was drilled into the outer rim of the bolt. Orienting the hole down, you saw the same appearance as the bolt above. That appearance has been around for decades and was pretty common on Euro furniture at one time.

I think it is a solution looking for a problem, but pretty cool to be able to machine to those tolerances, though.
 
Boy howdy it's sure true that folks who make knives hate expensive hardware or using a 17 point star wrench wrench that there are only 2 copies for a pivot bolt.
 
You'd have to be able to shrink the mechanism down enough before it would even be possible. Given the size of most folding knife hardware, I don't know that it's feasible.
 
Thus far, I have found that most of the knives with proprietary screws fall two categories that are not mutually exclusive:

1: Manufacturer is trying to make a statement with how nifty the design is
2: Manufacturer does not want you messing with their product, and and issues should be directed at them. Especially when QC might be suspect (ahem microtech ahem)

Most knives that come with proprietary hardware are also ones that don't have a market in customization.

My Brian Tighe and Friends small Twist Tighe OTF has them nifty cross screws, and TBH, its not a big deal to me. In 18 months ownership its not had a single failure to fire or retract, and has yet to see ANY maintenance.

What was really cool was that my custom Brian Tighe small Tighe Rod had what looked like proprietary pivot screws, but in fact were not!
 
You'd have to be able to shrink the mechanism down enough before it would even be possible. Given the size of most folding knife hardware, I don't know that it's feasible.
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If that doesn't work there's always Marvin the Martian and Rick Moranis...

Personally, I would choose Marvin the Martian. ANYTHING said in his voice is hilarious. I would absolutely love to have someone at Mcdonald's drive thru take my order in that voice.
 
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