Sale, transportation, storage, possession and use of detonators (blasting caps) are all covered by a heavy regulatory framework, in most countries. Persons who want to obtain them for illegal purposes have to either steal them from explosives companies, blasting and mining sites, from the military, or make them from improvised materials. There are publications and websites on the internet that provide detailed instruction on how to make improvised detonators and the filler explosive charges.
Securesearch makes a wide range of inert, improvised detonator training aids using steel, copper, aluminum, brass, plastic and paper (light cardboard). These are offered with x-ray correct simulated bridgewires and filler explosives– if you need them for x-ray imaging, identification and interpretation training, or for developing other detection instrumentation. We have sold them to a number of government agencies and contractors doing such R&D work.