Zebu horn friction folder / How to make a horn handle

C

cardoso5fr

Joined
May 28, 2004
Messages
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How to make a friction folder with horn handle. For the blade making you can see the process on my other friction folder how to.

Material
1 friction folder blade, one horn (here a zebu horn)
1 dremel with cutting disk, polishing wheel and polishing rubber.
1 pin, 2 brass washer, (eventually two rasor blade friction washer)
1 sand adaptator for drill machine (or one beltsander) grit, 36, 80,120,150,240 and felter with polish paste.
1 hammer


Choose one horn with a size proach of your blade. You won't have too material to put away. The first step is to cut the channel. With the dremel cutting disk (with the higher diameter you have), cut the chanel with a low speed (the horn is fast to be heat, and the dust smell not good at all). The disk is 2 mm thick, and the blade 4 mm, i cut with successive passage. mm after mm in order to obtain a 4 mm chanel. Don't cut too deeply for beguinning, it's impossible to ad material but easy to put away some more :).

The blade has the good size for the horn


The channel is totaly cut.

After you will adjust in function of the blade and the thickness of your horn

One time the chanel is finished, man can cut the horn in two part on his beguinning in order to permit to the blade to pivot.

The horn is cut on almost 1,5 cm deep, it's adjusted with pivoting the blade.

The cut is it

The blade in her place in closed position. You can adjust the deep function to the horn and blade size.With a triangular file, mark the lowest point of the blade heel when the blade is in the channel. You must keep in mind that the blade have to pivot.

Put the blade on the horn at the same position to simulate the place in the chanel, you have to use the file mark on horn to position the heel of the blade. Mark the center of the hole with a point of a pen.
 

With a point mark the spot to drill.

Fix the horn and drill with a drill bit of the same size than the blade hole, on the point you have just to mark.

Try to assembly the piece together with the pin.

Pivot the blade in order to see the maximum of movement possible. You can see you have to put away some material in the top chanel. Re cut with the cutting disk or a file. The main aim is that the queue of the blade find totaly her place in the horn.

When the blade has a good position, it could be something like that.

The blade queue find her place in the horn.

With the sander Disk mount on drill machine (grit 36 but you can use a simple belt sander with the same grit )to remplace that step, i use that tool because when i make the picture i have no more grit 36 for my little belt sander :)).You have to thin the handle. You have to put away some material in order to round all the part of the horn. Try to obtain a simetrical thichness. (it's not alway easy because horn was something alive and not formated at all)

The result after the 36 grit, after sand with 80 grit in order to thin more the handle. I use my belt sander and mainly the" mini contact wheel" and the free band to rounded all the surface.

After to grinded with 120 and 150 grit on the belt sanded. Finish with hand 240 or more grit grind .After polish with dremel felter and polish paste, try to make continu movement and don't stay to the same point during more than 1 seconde, because if you stay too long time on the same point the horn with take another color on that point and you will have to sand another time and repolish to obtain the same result everywhere.
 

The knife is assembly, you can see the steel plate and the round hammer i use to pin the pin. Cut the pin to 4 mm more than the thickness of the horn + the thickness of the two brass wascher.Put one wascher on each side of the horn and pin it with the hammer in taking care to hit to 45° the pin in order to chase the material on the border and don't deform block the pivot.The aim is to make a muschroom with the head of the pivot and to recover all the center of the brass wascher. You continue to pin one side after the other during the time necessary to obtain a good friction, but don't block the pivot.

After you can rounded the wascher with a polishing rubber, and clean and polish the wascher and pivot pin with felter and polish paste.

The last step is the sharpen the knife :).
 
Poids / Weight 33g
Longueur du talon a la lentille . Long heel to queue : 10,8cm
Longueur du manche / Handle Long : 8cm
Longueur ouvert: / Open 14,5cm
Lame / Blade : 7,6 cm dont utile / Usefull 6 cm
Epaisseur de la lame / Blade Thickness 3,2mm
Lame en O2 trempe sélective, revenu 1 heure à 220 °
O2 Blade and selective hardening, tempering 1 hour to 220°C
Manche / Handle : Zebu Horn / Zebu Corne

Steel pin on brass wascher

Closed

I will try to polish a little the chanel

A little friction folder really simple.

The position of the queue in the handle chanel.

Focus

Little but really sweet in the hand.

A little thumbstud.

Miror oh my miror
 
humm, nice, what an improvement since you start having fun with steel, two years ago !:yawn:

I suspect than in two year, you'll be doing damas multi blades folder !:D
 
Thank you :).Freddy only 1,5 years ago :) to customise opinel and only 1 years for total knives making
 
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