USERS MANUAL NOVA SERIES
DONGGUAN THUNDER LASER EQUIPMENT CO.,LTD
Shatian Town, Shatian Dadao, Mintian
Tel :(86)769 826653
Dongguan City, Guangdong Province, China
67
4.14 For Laser Engraving
The engraving depth can easily be varied through the laser power or the speed. To increase
the engraving depth, reduce the speed or increase the power setting. This way you
increase the amount of energy per area unit. Engraving too deep, however, reduces the
quality of the details. With coated materials the required power depends of the kind and
thickness of the coating. With power set too high the individual lines become too thick and
a sharp picture cannot be achieved. The resolution of the graphics should usually be at
500 dpi. The dpi setting (number of laser dots per inch) depends on the material. The lower
this setting is, the lower the resolution of the engraved picture will be. This, however,
reduces flaming and increases the energy of a pulse, which can improve the overall result
(e.g. when engraving some sorts of plastic materials).
1. Plastics
Plastics for engraving are available in many different colors and thicknesses and with many
different coatings and surfaces. The majority of available plastics can be well engraved
and cut with the laser. Plastics with a micro-porous surface seem to give the best result,
because less surface material needs to be removed. As most plastic materials have a low
melting point, a low pip setting should be selected to reduce the danger of melting.
2. Acrylic
There are two different types of acrylic
– cast and extruded. The cast acrylic becomes white
or mat after engraving, the extruded acrylic remains clear. Use extruded acrylic for
engravings that are filled with paint and cast acrylic for normal engravings. Cast acrylic can
be best engraved without protection foil. It is better to engrave the entire surface with a low
energy setting.
3. Engrave the rubber stamp
The various mixtures and densities of rubber plates cause a slightly varying engraving
depth. The settings in the overview table give a good indication. Since engraving a
standard rubber material requires a relatively high laser power, the laser power is
principally set to 40% or more high and only the speed is varied. Due to their lower density,
so-called micro porous rubber materials allow a significantly higher engraving speed. Test
the rubber first, to find out the correct speed setting.
The RDWorksV8 software using the engraving function, you can choose “Ramp Effect” or
common engraving, once you choose “Ramp Effect” and you will need to set a minimum
power lower than Max Power, generally we set it to about 15%, and input a value with the
Ramp Length what you want, but if you want to make it better, you may need to test different
kinds of power and speed by yourself, then you can get the best result.
Engraving rubber produces a considerable amount of dust and terrible gas. Therefore a
well-dimensioned exhaust system and its regular maintenance are very important.
