BASICS TO ENGRAVING AND EMBOSSING FORCE
As its standard font, Röltgen uses the font DIN 1451.
However, any other font can be used.
DIN 1451 characteristics:
Fig. top left: DIN 1451-2 narrow
Fig. top right: DIN 1451-3 mid narrow
Fig. bottom left: DIN 1451-4 mid
Fig. bottom right: DIN 1451-5 wide
Type of engraving and font size
The engraving style determines the print and the stamping
force. e.g. a sharp engraving style requires less
stamping force than a flatter one. If low-stress designs
are required, pointed engraving is preferable.
The font size (or character height) is always measured
from the highest, outermost point of the engraving.
It is best to first test the stamp using an ink pad and
paper on a hard surface. This will allow you to measure
the precise font size.
The engraving orientation determines whether the print
is legible directly or as a mirror image. This is to be
taken into account when the medium is to be stamped
from the back, but read from the other side
(e.g. blister packaging).
Left-hand-engraving = print directly readable
Right-hand-engraving = print not readable (mirror image)
Calculating marking force
In order to select the correct press, it is important to
know the required marking force. This can be determined using the following formula:
S = F x T x ND
S = marking force in N
F = factor (see table)
T = tensile strength in N/mm2 of material being marked
ND = number of digits
Example: Marking 6 characters in 5 mm character size in S 355 J0 (1.0553)
S = 17 x 500 x 6 = 51000 N = 51 kN