"we tend to ball park things and see how it goes. " I am from norway, not s good in english. Can you say it in a more basic way?:P didn't get the part, " we tend to ball park things".

I agree very funny. Just goes to show why he didn't light it in the house.

skylighter ftw!!! i ordered fuse from there, first 100 feet then 200 feet, and im sure someone has reported the 30 foot tall towers of sparks and flame in front of my house every night XD

wow uranium

adding to aerospaced the more surface area there is the higher possibility of it self igniting

--"The more finely divided the solid is, the faster the reaction happens. A powdered solid will normally produce a faster reaction than if the same mass is present as a single lump. The powdered solid has a greater surface area than the single lump." (http://www.chemguide.co.uk/physical/basicrates/surfacearea.html)

--"Surface Area: In reactions on surfaces, which take place for example during heterogeneous catalysis, the rate of reaction increases as the surface area does. That is due to the fact that more particles of the solid are exposed and can be hit by reactant molecules." (http://en.wikipedia.org/wiki/Reaction_rate)

lol i reckon if i shot myself in the foot, then you shot urself in the foot twice, sorry for being picky, im sure it doesnt really affect ur instructable at all, i just have my Higher School Certificate next week n cant stand to see my high school chem classes goto waste

yeah well i had to double check, hmm so do you have ne trouble of getting it to ignite with the pencil shaving sized stuff? i tried lighting sum aluminium and rust powder i filed but it wldnt light, i thought it wld have to be smaller, maybe i was just doin it wrong, owell, i found out that butane refill cartridges and petrol down rabbit holes is more fun,