How to improve your engraving results

This test shows how the laser cutter handles raster engraving of different font sizes and how you can improve the quality of your engraving.

Our current set up uses 3 colors for 3 different intensities of raster engraving:
– light gray for light raster engraving
– medium gray for medium raster engraving
– black for heavy raster engraving

The way the laser cutter works is like an old dot matrix printer except instead of dots of ink it uses pulses of the laser beam. For the black the density of the pulses is the highest and you get good resolution. For the lighter engraving there is less density of pulses and this produces a lower resolution especially if the text or shape being engraved is small. This is most noticeable around the edges of the shapes and on curves or diagonal (more…)

VUW students create 3D printers.

Last week the 3rd year Industrial Design students at Victoria University presented the prototypes of the 3D printers they had designed. The challenge was to design and make a “green” 3D printer in 4 weeks with a limited budget. The students innovative thinking looked at ways to make use of waste material and repurpose it into new objects.
“Stack” used the waste paper from generated by a bank and a ‘steampunk’ sewing machine to create layered forms based on an interpretation of the banks statistical data.
“Nexus” created forms by building up layers of bubbled gelatin. The results had some pretty amazing visual

And “Equinox” focused the power of the sun to selectively dry layers of recycled paint to build up fluid forms.



This is the second year that 3D printers have been create by the VUW students, with the last years post here. It will be interesting to see what ideas they come up with next year.