Magnesium dies, a low cost etched die for small printing quantities and materials representing no handling problems.Only single level de-bossing dies make sense in magnesium.
Brass die, high quality material for big printing quantities. Can also be delivered in steel.
Different producing processes:
Different thickness of material:
Standard is 7mm, other thicknesses on request.
Fixing flanges, mounting holes according to machine type and your requirements.
Talking about perfect fitting. Please tell us the printing temperature. We will compensate the heat extension in consequence.
Some kind of materials ask for deeper milling around the die.
Your hints are useful. Negative text elements appear smaller than positive ones. Please consider this fact while creating documents. Multi-level de-bossing tools are possible.