... | ... | @@ -14,6 +14,7 @@ |
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- **open the laser and if possible - remove the burning piece from the machine onto the concrete workshop floor**
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- **either stomp out the fire or use the CO2 fire extinguisher located next to the machine**
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## Operation modes:
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- cutting - **vector** designs only
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- engraving - vector and raster
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... | ... | @@ -24,13 +25,17 @@ |
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- press-fit construction
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- flexures, living hinges, mechanisms
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## Materials:
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- cardboard - very fast and cheap, incredibly useful for prototyping, but may well work in final designs
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- wood
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- acrylic
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- delrin
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## CO2-proccessable Materials:
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- [corrugated cardboard](https://www.packaging2buy.co.uk/cardboard-sheets-corrugated.html) - very fast and cheap, incredibly useful for prototyping, but may well work in final designs
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- [wood / plywood / mdf](https://hobarts.com/sheet-materials/wood_124_15/) - cutting sheets more than 3mm thick leaves heavily charred edge
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- [acrylic](https://hindleys.com/index.php/perspex-design-materials/perspex-plastics-foam/sheet-materials/perspex-acrylic-sheet/perspex-cast-acrylic-sheet.html) - ideal material for lasercutting
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- [delrin](http://hackaday.com/2015/09/22/drawbacks-of-lased-delrin-and-how-to-slip-around-them/) is great for mechanical designs
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- polycarbonate
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- metal
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## Fiber-processable Materials:
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- metals - engraving / etching
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- mainly for [PCB](http://www.fabacademy.org/archives/2015/doc/fiber-laser-cutting-pcb.html) fabrication
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## 2D Design Software:
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... | ... | @@ -45,6 +50,7 @@ |
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- [Surface unwrapping in Rhino3D](http://docs.mcneel.com/rhino/5/help/en-us/commands/unrollsrf.htm)
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- [Surface unwrapping in Blender3D](https://wiki.blender.org/index.php/Doc:2.4/Manual/Textures/Mapping/UV/Unwrapping)
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## Design tips:
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- [Adjusting press-fit designs for kerf and material thickness](http://www.instructables.com/id/How-to-Adjust-for-Wood-Thickness-and-Kerf-on-a-Las/)
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... | ... | @@ -61,28 +67,11 @@ |
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- [long, 35-min video](https://youtu.be/jidFXIG2IwQ), but again, very well worth your time
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- [**VERY VERY WORTHWHILE MIT COURSE ON LASER THEORY**](https://ocw.mit.edu/resources/res-6-005-understanding-lasers-and-fiberoptics-spring-2008/laser-fundamentals-i/) download the lectures onto your phone and watch on commutes.
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## Epilog-suggested feeds&speeds (speed/power):
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- cutting 3mm acrylic: 10 / 100
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- cutting 6mm acrylic: 3 /100
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- cutting 10mm acrylic: 1 / 100
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- cutting 3mm plywood: 20 / 100**
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- cutting 6mm plywood: 5 / 100
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- cutting 3mm leather: 30 / 100
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cutting mechanisms
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burning
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melting
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evaporation
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ablation
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airflow
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assist
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exhaust
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filter
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kerf
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settings
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power
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speed
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rate
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coordinate system, origin
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vector, raster |
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\ No newline at end of file |
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- cutting 3mm leather: 30 / 100 |
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\ No newline at end of file |