Friction fire - pull-string drill V2 - 80% primitive

[steintanz]

Ok, I see now: I stumbled into the realms of the primitive pros ... hope you will let me stay here for a little while ;o)

Really interesting to watch this - I am learning loads from you! Thanks.

[freejutube]

@steintanz

Thanks ;

very far from being or becoming a primitive pro... just playing for fun, and learning from experiments shared by others : thanks to everybody. And thanks to internet and social media ... :-) ... High tech helps primitive tech transfer !

[luth47]

Bravo, très cool celle ci aussi.

je me demande toujours comment vous faites pour calculer les pourcentages de techniques primitives...:)

[freejutube]

@luth47

% = estimation pifométrique à base de pure subjectivité primitive ! :-)

[nikfeo]

Thanks! Cool video!



[AllergicHobbit]

Wow! You are very clever, my friend!! I must try this. Thanks!

[wanderinggibbon]

If you double that string up, by rolling it together, it should be more than strong enough; very nice bobbin too.

[freejutube]

@wanderinggibbon

thanks,

Yes, doubling this string may function even without the bobbin. But I wasn't sure and tired of breakages. And then I tried to prove that there was a way to use fragile strings [hypothetically more frequent in remote prehistory ?].

[wanderinggibbon]

@freejutube Yes, of course; lighter pressure, more spin, same results. I wonder, if a vine (maybe Honeysuckle, or Clematis) might be used with the same technique. I think flexability might be the biggest problem, but that might be solved by drying, and re-soaking. Very good.

[freejutube]

@wanderinggibbon

OK, I just tried, quadrupling the hemp thread. Makes a string that seems fairly strong. Trying again the "pull-string drill" method as in the first vid [with only the thin shaft, without a reel] requires so much force compared to the use of the augmented diameter provided by the reel / bobbin that it's almost "disgusting" ! Better use a spindle with sufficient diameter : next experiment ...

[wanderinggibbon]

@freejutube Bigger surface area, more friction, more pull required, more tension on the string ... good luck.

[freejutube]

@wanderinggibbon

the spindle tip would be thinner than the part holding the string

(this would make the work as easy as with the bobbin)

[wanderinggibbon]

@freejutube Oh!, Ok, that sounds really cool; loads of revolutions, I wonder if you could use a harder wood than usual. Or at least it would be very quick.

[ANXIETOR]

very cool gizmo. different use of the counterweight idea from a pump drill. nice.

[freejutube]

@ANXIETOR

thanks

[AndreaGanora]

Very nice, I've never tried this technique.

I wander if it would work, just wrapping the tread around the drill shaft without making a sprocket.

I'll definitly give it a try.

Thanls for sharing

[freejutube]

@AndreaGanora

thanks,

I tried with other strings directly wrapped on the drill shaft. The strings broke [unless they were strong, like in previous video]. It will work as well without a reel and with a fragile string if the shaft's diameter is big enough to require only a "small" force compatible with the string's strength. The reel was in fact a way to increase the shaft's diameter and also a way to prevent the string from slipping, getting stuck and breaking.