4. Computer controlled cutting

Class

• class site
• video lesson

Assignment

group assignment:
characterize your lasercutter’s focus, power, speed, rate, kerf, and joint clearance
individual assignment:
cut something on the vinylcutter
design, lasercut, and document a parametric construction kit,
accounting for the lasercutter kerf,
which can be assembled in multiple ways,
and for extra credit include elements that aren’t flat

Previous year

• 2019 local session

Laser Cutting

Assesment

• Computer-Controlled Cutting
• Learning outcomes
  • Demonstrate and describe parametric 2D modelling processes
  • Identify and explain processes involved in using the laser cutter.
  • Develop, evaluate and construct the final prototype

Have you

• Explained how you parametrically designed your files
• Shown how you made your press-fit kit
• Included your design files and photos of your finished project

Vinyl Cutting

Learning outcomes

• Identify and explain processes involved in using this machine. Design and create the final object

Have you?

• Explained how you drew your files
• Shown how you made your vinyl project
• Included your design files and photos of your finished project

To Do

Group Assignment

• Group Assignment page の構成
• lab site
  • 本体を作る
• Student page
  • Group Assignmentで自分が学んだことを書く
  • lab pageへのリンクをはる
• （重要）lab siteの設定
  • Instructor
  • student全員をsiteのメンバーに加える
  • gitlab site > setting > members
  • Student
  • $ git push 出来るか各自確認する

Laser cutter

• レーザー加工機使用時の注意¶
• never leave laser under unsupervise
• presessionで説明したことを守りましょう
• 材料: ダンボール A3 およそ3mm厚
• アクリルやMDFと違い、向きで特性が異なるので注意
  • 45度回転すると均一になる？？

• 細くなっている箇所は燃えます

• Group assignment

• 使う材料において、適切なレーザー加工機の出力パラメーターを出す(Power, Speed, DPI)
• 実際にkurfを測る
  • デザイン寸法の分かるものを切って、カットしたもののサイズを測り、差からkurfを求める

• Combをつくってフィットする寸法を見つける

  • comb
  • FabLab平塚道用先生作: Kerf Check Parts Generator}

• Individual assignment

• 得られたkerfの値も含めたパラメトリックデザインのpress-fit construction kitを作る
• multiple waysに組み立てられるものであること（決められた形のものを切って組み立てるのではない）
• simple slotではなく、最低でもchamfer（面取り）も加えましょう
• 方法
  • Fusion 360 > Change Parameters > Sketch
  • Fusion 360からsvgを便利に書き出せるAPP Shaper Utilities
• Extra credit
  • Flatではないものを作る
  • Inkscape Extention
    • Living Hinge Creator
    • Inkscape Extension to Render a Living Hinge
    • インストール方法: download and unpack the archive file. Copy the files into the directory listed at Edit > Preferences > System: User extensions. After a restart of Inkscape, the new extension will be available.
  • Trotec: Download CorelDRAW and PDF
  • JP: Trotec 曲げ加工のカット技法 templates:PDF,CorelDRAW
  • EN: Kerf cut: Trotec Wood and acrylic sheets bending applications

Vinal cutter

• silhouette CAMEO and Silhouette Studio
• Make:
  • Laptop Sticker
  • Sandblast stencil > glass

Next week

• Monday Recitation 23:00-24:00
• project management
• Tuesday Asian Resional Review 12:00 & 21:00
• 12:00-: zoon http://fab.academany.org/2020/video.html
• 21:00-: zoom or bluejeans Bluejeans.com/u/fablab/1248
• Wendnesday Class 23:00-2:00
• Electronics Production
• assignment
  group assignment:
  characterize the design rules for your PCB production process
  individual assignment:
  make an in-circuit programmer by milling and stuffing the PCB, test it, then optionally try other PCB processes