birch tar / pitch - first try & failure - 98% primitive

[luth47]

Le système est ingénieux, j'ai apprécié la vidéo.

d'après ce que j'ai pu lire il semble qu'il faille un gros feu et qu'il reste de l'écorce calcinée en fin d'opération. On conseille également de se servir de l'écorce externe qui se détache facilement de l'interne.

Source Webarcherie "brai-de-bouleau"

il me semble que le réceptacle doit également rester assez froid.

voir sur ginellames.fr dans la partie vidéo "fabrication des couteaux" (3ème vidéo)

[freejutube]

@luth47

(votre commentaire a été flaggé comme spam apparemment ?? si c'est moi je n'ai pas fait exprès, désolé).

Merci, je vais aller voir les liens que vous m'indiquez.

Pour ce qui est des gros feux, j'aimerais bien, mais il faut d'abord trouver par ici un endroit où ce serait autorisé ... :-) ...

[luth47]

@freejutube

Aucun problème, c’est pour éviter le spam que youtube empêche l'affichage de liens alors.

S'ils pouvaient faire de même avec la pub... :)

[freejutube]

@luth47

Ah !

Pour ridiculiser la pub, j'ai une idée ! Faire une chaîne spéciale, y placer des vidéos écoeurantes, la pub s'afficherait quand même sur ces vidéos ==> ajouter un commentaire moqueur dans une infobulle pointant sur l'annonce. L'annonceur s'auto-ridiculiserait (très localement) en afiichant ses pubs dans des environnements désobligeants, hostiles. On appelerait des vidéos "hostiles" (comme ce monde est focalisé sur la pub, il serait inutile de préciser hostile à quoi).

[steintanz]

... very interesting to watch, but sorry, no advice I could give you. Wish you the best for the next try!

[freejutube]

@steintanz

thank you, 

[kitsurubami]

i don't know much about the subject, and i have not read the other comments because i'm lazy, but here are the two alterations i can think of that may be worth trying. By balling the birch bark, it appeared to create a diaper of sorts holding all the pitch within. Try rolling it in a cylindrical shape with the top facing up. A very small amount of water might assist the pitch to flow, it could be too viscous.

[freejutube]

@kitsurubami

Thanks,

I'm OK with you : need to change the disposition of the bark (I made a ball to ease the creation of the clay enveloppe; bad idea). About adding water, I don't know, maybe (in my experiment the bark was still wet, as was the clay).

[wanderinggibbon]

You can change your channel design to the old one, if you look at your options; please send me a private message, and we can talk properly. Thank-you.

[wanderinggibbon]

Can't find private messaging.

[wanderinggibbon]

Brilliant; I've been thinking about this myself. I would try adding a lot more bark (whiter bark, more oil) make sure the pit is angled, so the oil flows down. You shouldn't have to make the fire deeper (on top is fine) but it should be for longer (2.30 - 3 hrs) make the clay cover as thin as possible, or add more cooking time. You will get oil first, then you can move it, and boil it down seperately to get tar, by heating with hot stones. I have other ideas, I will send to you privately. Great!

[freejutube]

@wanderinggibbon Thank you for your appreciation and advice :-)

Private (?) messaging is availalbe under "inbox"/ "compose" in the new design. [I chose the new design which I consider somewhat better]. You can also let your messages as comments : they may be useful to other "prehistoric experimenters".

I'm wondering what should be left in the upper container (ashes, charcoal, tar, nothing ?) when the distillation process works.

[wanderinggibbon]

@freejutube I really like your videos, it's my pleasure to watch. I will try a private message some other time, as I'm going offline now. I only suggest a private message, because it would take more than the comment box can handle to describe ... hehehe ... There should be charred bark left (like charcoal) and in your video, it looks like it's wet with oil, so I would think more heat, and more time. Again, great video this one, well done.