Jousi

[Mika]

Tuntuu olevan todellakin loistoideat aloittaa paljon mielenkiintoisia keskusteluja ja häätää kaikki sinne mistä tulikin suoraan sanottuna.

[jkekoni]

375 F is 191 C.

[Simo Hankaniemi]

I have never made a bamboo bow, but Muri Salin made a nice sinew backed one about 20 years ago. He still has the bow. It´s surprisingly elastic, slightly recurved and setback design. The bamboo belly is not heat treated. When I first saw the bow I decided to make a similar one, but that´s still a pipe dream.

[Mika]

jkekoni,
375 F is 190.55555555555557 C and 190 C is 374 F. Tarkista vaikka aika kellosta http://www.wbuf.noaa.gov/tempfc.htm

[Vieras]

[Mika]

Check your bandwidth...

[Mika]

Can you make a bow allready from that thick bamboo ?, http://www.fletchers-corner.de/bilder/persgalerie/eldoro/Bambus_009.jpg

[Mika]

Looks like that can do, http://www.koreanarchery.org/bbowkids.html

[santtu]

can a bamboo bow be heat-treatet in a heat box, because atleast when I made the mistake to heat-treat my rowan short-bow from it's back it broke emeaditly.. so the qestion is: can one meke a durable and functionable bemboo bow if the back of the bow is heat-trated?

[Simo Hankaniemi]

I feel it´s not a good idea to give any heat to the back of the bow.

[jkekoni]

It may be a good idea to heat treat the back of the bamboo, if you protect the knots from the heat with tape and wet paper. The knots are the weakest points anyhow. This would give more harness to the bamboo and allow you the deflex it. Or would it make the knots more flux making then more bending spots... probably not, since they are less bending anyhow. Or they would be less stiff making the even weaker.

Or it may be enough just to heat treat the belly.

Bamboo it not wood, but weed, so it may not follow all the wood rules...