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Moulding and casting

💡Group assignment

  • Review the safety data sheets for each of your molding and casting materials
  • Make and compare test casts with each of them
  • Compare printing vs milling molds

About this week

Briefly describe the goal of the assignment. What are you characterizing, testing, or exploring

Thom: Used a Clear V4 mould formed via the FormLabs 3B+ SLA printer, to cast Urethane

Tools and materials used

List all the machines, software and materials used in this assigment.

Carl:

  • Moulding - MBFG Duroflex 30 PU
  • Casting - Jesmonite 100A
  • Moulding Bonus: EVA Flex Vac Form using last weeks roto-casting machine.

Thom:

Materials

  • Polytek Polyflex 30 PU Casting Rubber (Shore A30)
  • Polycryl No. 59 Wax Release
  • PlastiKote Clear-dry Lacquer Gloss
  • Iso-propyl alcohol 99%
  • Formlabs Clear V4 Resin
  • Plastikote Clear lacquer

Machines

  • Formlab Form 3B+
  • Formlabs Wash
  • Formlabs Wash

Software

  • Blender
  • Preform

Process and methodology

Describe step-by-step what the group did. Include sketches, screenshots, or videos if possible.

Type here

Jesmonite

Jesmonite-AC100-Liquids-MSDS

Jesmonite uses a 2.5 part dry material to 1 part wet materials.

It needs to be sired genitally but thoroughly so that you don’t need introduce air but fully mix the materials.

I chose to use the pigments for the Jesmonite, in my case you can add up to 2% of the volume

I used a mould that came as a sample for a coaster and our egg roto-cast.

Urethane Rubber

{% file src=”.gitbook/assets/DuroFlex30_parta_sds.pdf” %} Kerf fit test

{% file src=”.gitbook/assets/DuroFlex30_partb_sds.pdf” %} Kerf fit test

Thom: Moulding Urethane in a Clear V4 Resin 3D printed Form

Safety Documents:

Group conclusions

Findings: [What did you learn from the process?]

Challenges: [What issues did you encounter?]

Solutions: [How did you solve them?]

Type here

Files

Add all files created for this group assignment

See below link to to files created this week:

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