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Techniques Friday August 1st, 2014 Masterjoa

Flying firecracker (spinners)

Here is a video explaining how to make helicopter fireworks…

Compositions Tuesday July 22nd, 2014 Masterjoa

Strobe rocket fuel

Strobe rockets function similar to strobe stars in that the reaction oscillates between flash and smoulder phase.

Compositions Tuesday July 22nd, 2014 Masterjoa

Colored rocket fuel (propellant)

Do you like rockets and you are a bit bored of the orange combustion ? Here are some colored rocket propellant ! All parts by weight. Red Strontium Nitrate 50 Potassium Perchlorate 8 Parlon 18 Magnalium, 275 mesh 12 Charcoal Airfloat 5 Sulfur 5 Red Gum 2 Dextrin +5

Compositions Tuesday July 15th, 2014 Masterjoa

Colored smoke

Here is how to make colored smoke mix. In this video I show you how to make purple ones using rhodamine B. To produce color, the dye must be vaporized by the combustion heat and exit the reaction zone attached to the gasseous by-products where it will condense in air to re-form into solid dye […]

Lock-picking Monday April 7th, 2014 Masterjoa

How to pick handcuffs with a double lock

This is how to pick handcuffs. For this video, I chose to use a pair of Smith and Wesson M100 handcuffs with a double locking system.With this model, the double lock is set up by pushing the small bar with the other side of the key. Once double locked, handcuffs can’t be tightened anymore. On […]

Compositions Monday March 3rd, 2014 Masterjoa

Smoke mix

Smoke mix is a composition designed to produce smoke upon ignition. A common formula for a grey/white coloured smoke device is a mixture of the oxidizer Potassium nitrate, and sugar. This formula has another very similar variant in which the ingredients are left in powder form and the granulated sugar is replaced with icing sugar. […]

Mechanical launchers (blowguns, crossbow, etc) Wednesday January 23rd, 2013 Masterjoa

Compressed air blowgun

Here is how to make a powerful compressed air blow gun with a pen. Speed test (+-0.25% accuracy chronograph): – Average: 40 m/s = 131 fps = 89 mph – Max: 52 m/s = 170 fps = 116 mph Kinetic energy (0.3g bullet): – Average: 0.24 J – Max: 0.4 J

Lock-picking Tuesday January 22nd, 2013 Masterjoa

Padlock lock picking using paper clips

Step 1 : Bend one of the paper clips in a way it can be stuck in the lock. Step 2 : Unfold the other one and make a small hook at the end of it. Step 3 : Insert the first one into the top of the lock and push it to turn the […]