Slipjoint blade tip in relation to pivot point - please help

H

Heli00

Joined
Oct 19, 2017
Messages
340
Hi,

Where should the tip of the blade be in relation to the pivot point?

Here is a sketch for clarity.

A63-BA25-C-187-F-4836-BE31-3-D59240-F3612.jpg


Should it be inline (1), above (2) or below (3)?

I know I have not taken into consideration the handle, so that would be possibly (4). Should it be inline with the centre of the handle?

UPDATE: Forgot to mention, this is vis-a-vis to the best alignment that keeps the blade from closing too easily. Of course, not talking about stabbing with a slip joint, but just the best design to mitigate improper usage/pressure and accidental closing.

Thanks in advance.
 
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#3.

To illustrate from actual well-made slipjoints, here's a picture I posted on a similar thread recently (note that every one of these has a point below the centerline of the handle - the Cudemon (5th from top) may not look like it, but if you turn the handle to be inline with the other knife handles, the point is significantly below the centerline). In looking through my admittedly small collection of slipjoints, I actually couldn't find one where the point wasn't below the handle centerline.
20220815_153648-jpg.1901127
 
Dropping the tip below the centerline places the tip lower in the closed knife ... preventing pocket snag.
 
My patterns run between 1 and 3, most tend to 1. #3 make it easier to hide the tip in the frame with a longer kick.
 
Put the tip anywhere you want, you just design the liners to cover the tip.

Like Bill said "it's how you design the knife"
 
Bill DeShivs said:
I really don't know how to elaborate on "how you design the knife."
Click to expand...
sorry, I guess I didn’t understand your statement. should I interpret it as the tip of the blade ends up wherever it happens to end up based on the chosen blade design? Like in a sheeps food design, the tip will always be below the pivot point, so nothing will change that.

thanks
 
AVigil said:
Put the tip anywhere you want, you just design the liners to cover the tip.

Like Bill said "it's how you design the knife"
Click to expand...
I think I understand now what Bill was telling me, thanks,
 
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If there are any rules - ignore them. Design it how you want, but you will find with folders, any change will usually have a nock on effect.

I don't like the point to be near the centre - no1 on your drawing. If you do use the tip of the knife to drill or pierce it only takes a slight change in the direction you are pushing to snap the blade shut on your fingers.

So I would go for 2 preferably or 3 and a wharnie style blade or other blade shape that discourages pushing the point into things.

But primarily put it where best suits what you want the knife for - this may not be obvious and may take some experimentation to get right.
 
Mike Read said:
If there are any rules - ignore them. Design it how you want, but you will find with folders, any change will usually have a nock on effect.

I don't like the point to be near the centre - no1 on your drawing. If you do use the tip of the knife to drill or pierce it only takes a slight change in the direction you are pushing to snap the blade shut on your fingers.

So I would go for 2 preferably or 3 and a wharnie style blade or other blade shape that discourages pushing the point into things.

But primarily put it where best suits what you want the knife for - this may not be obvious and may take some experimentation to get right.
Click to expand...
Thank you!
 
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