Briquet solaire - French Solar Spark

[Whittler Kev]

Just saw this on Youtube. It's 4.90 Euros (found it cheaper at 3.90 Euros later).
I like the idea of it closing and protecting the mirror. The focal length is preset by how far the lid opens (easier to see in the video - link at the bottom)
It's advertised as a cigarette lighter (only smoke when its sunny and not after dark?) but it must light char cloth as well
Anyone seen them in the UK for sale?

http://www.grainsdsoleil.com/index.php?art=3&th=300

Gadgets solaires
Briquet solaire
Pratique, original, amusant, le briquet solaire est inépuisable
Il s'ouvre comme un coquillage. Les rayons du soleil sont concentrés et réfléchis par une parabole en aluminium. Il suffit d'orienter le point de concentration sur le bout de la cigarette à allumer.
http://www.grainsdsoleil.com/fr/images_db/http://www.grainsdsoleil.com/fr/images_db/Réf. IDS-001
Prix : 4,90 €
Disponibilité : En stock javascript:document.form_300_3.submit() Diamètre d'environ 6 cm
5 couleurs : rouge, jaune, vert, orange et bleu
Pour des achats en nombre, ou un marquage par tampographie, consultez nous!
Video = http://www.youtube.com/watch?v=l-X6BBY8kME&feature=related

Apprently Goinggear sells them I've been told
http://www.youtube.com/watch?v=CEbHyeIPfwQ £16

 

[Ray Britton]

I have something similar, which was free. The bottom of a coke can (polished to mirror finish lol). It is the bottom of one of my coke can stoves, so is a two in one tool

 

[ged]

I'd go for a Fresnel lens of about a square foot. You can set fire to a wet sock by moonlight with one of those.