Differences

This shows you the differences between two versions of the page.

--- lasercutter_tips_and_tricks [2022-05-19 14:51] – MirZa
+++ lasercutter_tips_and_tricks [2023-12-20 23:47] (current) – Add Linux imagemagick info danshearer
@@ Line 87: / Line 87: @@
   * Steps:
   * Dither an image in Gimp or this online tool https://29a.ch/ditherlicious/
-  * use Gimp or ms paint to convert the image to a monochrome bitmap
+  * use Gimp or ms paint to convert the image to a monochrome bitmap, alternatively imagemagick using: **magick.exe in.png -monochrome -alpha off out.png** (Windows) or **convert in.png -monochrome -alpha off out.png** (Linux)
   * open the image in LaserCut and scale it so one pixel corresponds to one line of the laser engrave (the height of the image in mm should equal the height of the image in pixels multiplied by the scan gap)
   * You can preview the output by clicking on "Laser" -> "Simulate"
@@ Line 126: / Line 126: @@
   * This will require some trial and error
   * Costa has experience with this
+  * Another method is to engrave from [[https://www.youtube.com/watch?v=DQXuzTTf2QE|both sides of the material]], using a jig to make sure the two cuts are aligned
 **Hatching**
@@ Line 144: / Line 146: @@
 **Kerf correction**
+Example of this in action (slope may be different for different materials and settings) in figure below:
 {{https://www.researchgate.net/profile/Jetro_Pocorni/publication/287815638/figure/fig4/AS:309555671126016@1450815231017/Kerf-width-data-for-aluminum-plate-cut-with-a-6-kW-CO-2-Laser-over-a-range.png}}
+  * Pattern for testing out different tolerances for tight fitting finger joints: [[https://www.festi.info/boxes.py/BurnTest?language=en]]
   * Good explanation: http://archive.fabacademy.org/2018/labs/fablabsiena/students/giuseppe-allocca/laser%20cutting.html
   * The laser cutter has something called “kerf”, if you send a 1cm square to the laser, the part will come out slightly smaller (~9.8mm)