Waching daily Mar 3 2018

black powder

magnesium (galvanic anodes for heaters, boilers, boats...)

the mixture contains 5 grams of black powder for each gram of magnesium powder

bamboo tubes glued in a cardboard base

hole diameter: 5-6 mm

I added the mixture in 4 or 5 portions, compacting each time

the mixture needs to be compressed for two reasons:

1 - eliminate the empty spaces inside the tube, which gives a slower burn

2 - the compacted mixture does not fall out of the tube

fuse

the last portion of the mixture holds the fuse in place