10. Molding and casting¶
Class site¶
Class video¶
Fab-20190320B_Review08: embedded programming
Fab-20190320D_Lesson09: molding and casting
video
Assignment¶
group assignment:
review the safety data sheets for each of your molding and casting materials,
then make and compare test casts with each of themindividual assignment:
design a mold around the stock and tooling that you’ll be using,
mill it (rough cut + (at least) three-axis finish cut),
and use it to cast parts
Learning outcomes¶
- Design appropriate objects within the limitations of 3 axis machining
- Demonstrate workflows used in mould design, construction and casting
nueval-Check List¶
- Explained how you made your files for machining
- Shown how you made your mould and cast the parts
- Described problems and how you fixed them
- Included your design files and ‘hero shot’ photos of the mould and the final object
- Reviewed the safety data sheets for each of your molding and casting materials, then made and compared test casts with each of them
FAQ¶
- I want to only make a wax mould, and cast something in it. Is that acceptable?
- Learn and go through the 3 step process first . To break the rules you have to master the rules.
- Can I 3D print the mold? Can I do a lasercut?
- No, for this assignment you must mill the mould using a CNC milling machine.
Turotial¶
12.1. Introduction to Molding and Casting- Video
12.2. Molding and Casting - FabModules
- Examples
- 3D SCANNING TO MOLD
- 2D PART MOLD EXAMPLE
For Japanese¶
nueval¶
- Global Evalが始まりました
- now proceed to request Global Evaluation for your students
- 3 assignments or more already checked
- Once they are assigned to a Global Evaluator, that credit is used, and they will have to pay a new evaluation if they don’t finish now.
- continuing students
- one free re-eval/person
- pay after two cycles
- continuing students
- Week 1- week 9
- 指摘 > 修正・Student’s checklistをチェック > 全てチェックが3週以上 > Global Evalをリクエスト可 > Global Evalatorがアサインされる
- week 10以降
- Student’s checklistが全てチェックされた週 > 確認 > (指摘 > 修正) > Global Evalへ
- 期限
- Apr 24: sort go/?/no-go for review
- Jun 19: last date to submit for review
- Jun 26: last date for feedback from review
- July 3: last date for review feedback
手順¶
- 3Dデザイン
- positive
- 位置合わせ凹凸
- ワックスをMDX-15で削る
- positive
- ケーブル:黒
- PC: Windows
- ソフト:ローランド製(Fabmodules,modsは使用しない)
- rough cut
- 0.1250” DIA 2FL SE AlTiN 1/8
- 0.1250” DIA 4FL SE LONG AlTiN 1/8
- finish cut
- 0.0625” DIA 2FL SE AlTiN 1/16
- 0.0625” DIA 2FL BALLNOSE AlTiN 1/16
- 0.1250” DIA 4FL BALLNOSE LONG AlTiN 1/8
- rough cut
- ワックスは回収 > 再利用
- シリコンをワックスに流し入れ、型をとる
- negative
- ウレタン樹脂をシリコン型に流し入れ、成果物
- positive
- ウレタン樹脂には色をつけることも可
- 低融点金属も使用可
材料¶
- ミリングワックス、モデリングワックス、マシーナブルワックス
- Ferris File-A-Wax
- Blue
- 92 x 152 x 39 mm x各1個(予備あり)
- Safety Data Sheet & Technical Data Sheet
- モールド(シリコンゴム)
- Smooth-on MOLD STAR 16 FAST
- Mix Ratio: 1A:1B by volume / 1A:1B by Weight
- Pot Life: 6 min
- Cure Time: 30 min
- Temp: 450F 232C
- Color: Blue-Green
- 0.9 kg x 2
- Technical Bulletin
- 日本代理店作成
- Shore A Hardness: 16A
- Safety Data Sheet
- Smooth-on MOLD STAR 16 FAST
- キャスト(ウレタンレジン)
- Smooth-on Smooth-Cast 300
- Mix Ratio: 1A:1B by volume or 100A:90B by weight
- Mold Making & Casting Calculators
- Pot Life: 3 min
- Cure Time: 10 min
- Mixing Tool: metal, glass or plastic
- Color: White
- 0.9 kg x 2
- Technical Bulletin
- Safety Data Sheet
- Smooth-on Smooth-Cast 300
- ウレタン用着色剤
- Smooth-on SO-Strong
- 0.01% - 3% of the total weight (Parts A + B mixed) of the material being cast
- Technical Bulletin
- Safety Data Sheet
- Smooth-on SO-Strong
- 低融点金属
- 石膏
作業時の注意¶
- モールド・キャスト
- 換気に注意
- ゴーグル、手袋を着用
- 机等の養生をしっかりして、汚れを残さないように
- 硬化時に発熱します
- 未反応液は反応させてから捨てる
- 金属
- 電気コンロ等の熱源を使用するので火傷に注意
- 低融点とはいえ、融解した液体を加熱し続けると高温になる
- 溶かしている最中・溶けた金属の扱いに注意
- 鉛・カドミウム含有
- 電気コンロ等の熱源を使用するので火傷に注意
For Next Week¶
- Monday 9:00 DST, 22:00 JST
- Recitaion: machines
- Tuesday Time:
- Asia Regional Review: 13:00-14:00 JST and 22:00-23:00 JST
- 可能な限り参加してください
- videoconference
- conference for meetings: https://bluejeans.com/fabevent/1248
- Wednesday 9:00 DST, 22:00JST
- videoconference
- Zoom meeting ID: 198 434 642, password: 1234 ~500 ports
- 多分使用しないhttps://bluejeans.com/academany/2486 ~200 ports
- Input Devices
- videoconference
assignment¶
individual assignment:
measure something: add a sensor to a microcontroller board
that you have designed and read itgroup assignment:
probe an input device’s analog levels and digital signals