Hand stitching a riffler or rasp video

It is a true craftsman who makes the stuff that makes the stuff! Cheers Noel... thanks Sam.

Rick
 
Liogier

Since you offer, I have a few questions. Are your fingers made from asbestos? It seemed like you hardly had the rasp in the quench then you pulled it out and were handling it with your bare hands.

I think you make your own punches for the stitching process (making the teeth), unless it I'm asking for proprietary secrets, can you share what types of steel, or steels, are use in the different parts of the process?

If it was easy more people would be making their own rasps. How long does it take to learn to hit with just the right force and to get your rows straight?

Thanks for sharing your video.

- Paul Meske
 
Simply wondrous. The more I learn the more i learn I don't know. Thank you for posting.
 
lonepine said:
Liogier

Since you offer, I have a few questions. Are your fingers made from asbestos? It seemed like you hardly had the rasp in the quench then you pulled it out and were handling it with your bare hands.

I think you make your own punches for the stitching process (making the teeth), unless it I'm asking for proprietary secrets, can you share what types of steel, or steels, are use in the different parts of the process?

If it was easy more people would be making their own rasps. How long does it take to learn to hit with just the right force and to get your rows straight?

Thanks for sharing your video.

- Paul Meske
Click to expand...

First, thanks to all for your kind comments.:cool:

Heat-treatment is about suddendly changing the temperature of the steel, from high temperatures (805 °C in this case) to normal ones (18 °C). And it actually works : the rasps temperature is little above 18°C when I take them out of the quenching bath. So everybody can do that (I guess that in this forum many members are already doing it). In fact, if there is a secret in the heat-treatment process, it is more concerning the way (angle, speed, sligth lateral movement, ...) you enter the rasp in the quenching bath to avoid it to twist, even slighty, which would make the rasp unsusable.

As regards the grade of steel we use, I am sorry but I don't like too much to talk about it.;) To be forgiven, here are some pictures of the home-made hammers and punches we use. We call the punches "grain of barley" because of their shapes :

http://i48.servimg.com/u/f48/16/38/99/18/grains11.jpg

http://i48.servimg.com/u/f48/16/38/99/18/martea11.jpg

I have teached hand-stitching rasps to 8 persons in my life and have been successful with 5. It took them between 12 and 18 months before producing their first perfect rasp. The other 3 just couldn't get it right. Out of the 5, 2 are now retired, the other 3 are still working with me.

Noel Liogier
www.liogier-france.com
 
Liogier said:
Heat-treatment is about suddendly changing the temperature of the steel, from high temperatures (805 °C in this case) to normal ones (18 °C). And it actually works : the rasps temperature is little above 18°C when I take them out of the quenching bath.
Noel Liogier
www.liogier-france.com
Click to expand...

I do not wish to be a pest. But I feel compelled to delve deeper. :cool:

The video clearly shows steam rising from the rasp as you remove it from the quench. Either the tool is still quite hot or the room very cold. Perhaps the workshop was well below 18°C? :eek:

Love the video and the music is very pleasant. Thank you for sharing. Maybe this is what you listen to while stiching. In fact, maybe this is the secret to your success! Good music soothes the soul allowing for relaxed and consistent stitching. :thumbup::thumbup:
 
shotgunner said:
I do not wish to be a pest. But I feel compelled to delve deeper. :cool:

The video clearly shows steam rising from the rasp as you remove it from the quench. Either the tool is still quite hot or the room very cold. Perhaps the workshop was well below 18°C? :eek:

Love the video and the music is very pleasant. Thank you for sharing. Maybe this is what you listen to while stiching. In fact, maybe this is the secret to your success! Good music soothes the soul allowing for relaxed and consistent stitching. :thumbup::thumbup:
Click to expand...

Maybe a bit both of it. But the third thing is that the teeth are surely cooler that the body of the rasp itself and my fingers touch only the tip of the teeth to grasp the rasps.

For those of you interested about hand-tools, I've just put online a small glossary, a FAQs page and a blog about hand-stitched rasps.
 
Last edited:
You must log in or register to reply here.
Back
Top