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======Laser cut lampshade ply edition=======
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This workshop builds on the previous laser cut lamp workshops:
* [[workshops:prototypes:lasercutlamps:illustrator_for_laser_lamps|Illustrator for Laser Workshop]]
* [[workshops:prototypes:corporate_lamp|Corporate TeamBuilding Workshops - Laser Cut Lamps]]
* [[workshops:prototypes:lasercutlamps:foss_laser-cut_lamps|FOSS Laser Cut Lamps]]
=====Rationale=====
Running workshops
* Induction to the laser
* include an introduction to Free and Open Source Software(FOSS).
* produce take away lamp
=====Outcomes====
* Basic bitmap image processing using GIMP.
* Bitmap to vector conversion using Inkscape.
* Preparation for Laser Cutting using Corel Draw.
* Assembly and **take-home** of a laser cut lamp.
==== Tools ====
- [[https://www.gimp.org/|Gimp]] for image clean-up and processing
- [[https://inkscape.org/en/|Inkscape]] for bitmap tracing and vector editing
- [[https://www.coreldraw.com/en/|Corel Draw]] for final checks and laser layout.
- [[facilities:fablab:equipment-cots:rayjet300:start|Rayjet laser cutter]].
====Materials and Resources====
* A selection of public domain images sourced from the [[https://www.metmuseum.org/art/collection/search#!?offset=0&pageSize=0&sortBy=Relevance&sortOrder=asc&perPage=20|metmuseum]], found under [[https://www.metmuseum.org/art/collection/search#!?material=Paper&showOnly=withImage&offset=0&sortBy=Relevance&sortOrder=asc&q=silhouette&perPage=20&pageSize=0|silhouttes]].
* Corel Draw {{ workshops:prototypes:2022-23delivery-lasercutcovers:ply_laser_lamp_4.0mmx1.cdr |template}} for the lamp outline.
* One 720 x 430mm sheet of 3mm single ply cardboard
* One [[https://www.ikea.com/au/en/catalog/products/90371440/|Strala]]
* One [[https://www.ikea.com/au/en/catalog/products/60305748/|Ryet]] or similiar.
====== Workshop Outline ======
//10min//
* Welcome
* Demo of the laser, lamp and assembly.
* What makes a silhouette?
* What breaks a silhouette?
* Silhouette examples..
====Is this a Silhouette? ====
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===== FOSS =====
Intro to designing for Laser cutting in FOSS -// 10min//
*What is FOSS.
*When to use FOSS
*When to use non-FOSS
*What is GIMP and Inkscape?
*What is Coreldraw?
=====Pick a Silhouette=====
The workshop as a whole chooses an artwork **for all particpants** to work on.
Use theses rules to inform your choice.
*5 minutes cutting per lamp
*One feature per lamp
* other panels can be blank or windowed
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{{ workshops:prototypes:2022-23delivery-lasercutcovers:dp170795.jpg?direct&80 |}}
{{ workshops:prototypes:2022-23delivery-lasercutcovers:is1993.67.2.r.jpg?direct&80 |}}
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{{ workshops:prototypes:2022-23delivery-lasercutcovers:dp149259.jpg?direct&80 |}}
{{ workshops:prototypes:2022-23delivery-lasercutcovers:lc-cp63_001.jpg?direct&80 |}}
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=====Introduction to Gimp =====
// Basic bitmap processing to produce a two colour image - 15 min//
* Open chosen image in GIMP
* Selection and Navigation tools
* crop
* brightness and contrast
* Blur and unsharp
* convert to grayscale
* posertize
* export as a jpg.
=====Introduction to Inkscape=====
// Import to Inkscape and Convert to Vectors - 20 min//
* Selection and Navigation tools
* Trace bitmap tool
* select best single scan method
* adjust options (speckles, corners and paths)
* Process and close
* Export as PDF
=====Prepare for Cut in Corel Draw====
Editing - //20min//
*Trim the fat - be ruthless
* small shapes won't drop out
* complex shapes will break
* complex shapes take too long to cut
====Process====
*Grab the{{ workshops:prototypes:2022-23delivery-lasercutcovers:ply_laser_lamp_4.0mmx1.cdr |}}| template}} and open in CorelDraw.
*Import your artwork PDF
*Get familiar with the selection and navigation tools
*Scale your artwork up to reduce complexity
*Use the shaping controls to trim or cut by combining shapes
*Use the Shape tool (F10) to
* access individual points to correct glitches
* **reduce nodes** (in the menu bar)
* use the curve **smoothness slider** (in the menu bar)
* Drag your artwork to a panel
====Laser Ready checks====
Check all colours are on the rayjet pallete
{{ facilities:fablab:equipment-cots:rayjet300:rgb_process_colours.png }}
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* Check line widths are all **hairline**
* Save your design as a CDR (CorelDraw) file onto the facilitators USB stick. **AS VERSION 17**((the laser cutter PC uses version 17 of Corel Draw))
===== Cutting and Assembly ======
- Your facilitator will cut your design on the laser cutter
- Remove your sheet from the laser cutter
- Clean up loose material from the laser cutter bed
- Weed your lamp (remove cut shapes)
- Grab a light fitting and bulb
- Assemble
- Take home and enjoy!
===== Files ======
Pre-packed {{ workshops:prototypes:2022-23delivery-lasercutcovers:ply_lamp_4mm_material.zip |zip}} file containing DXFs exported from Fusion360.
Corel Draw templates for {{ workshops:prototypes:2022-23delivery-lasercutcovers:ply_laser_lamp_4.0mmx1.cdr |one lamp per sheet}}, {{ workshops:prototypes:2022-23delivery-lasercutcovers:ply_laser_lamp_4.0mmx2.cdr |two lamps per sheet}}, and {{ workshops:prototypes:2022-23delivery-lasercutcovers:ply_laser_lamp_4.0mm.cdr |one lamp per offcut sheet}}.
====Laser settings====
* Silhouette 85 Power 2 speed
* Cut 85 Power 2 Speed