Molding and Casting A¶
Group assignment requirements¶
The group assignment for this week is the following:
- 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
find any mold that you are able to use. Any shape works. Gather all the molding and casting materials you have in your lab to be able to test them all
Material 1 : [Silicone]¶
Safety¶
Add the safety procedure to be followed with this material. Example: eye or respiratory protection, ventilation, exposure to heat, etc..
PPE: Wear gloves, goggles, and lab coats. Handling & Storage: Ventilate well; store away from incompatible materials. Avoid Contact: Minimize skin contact, inhalation, and ingestion. Safe Practices: Avoid eating/drinking; use proper tools. Emergency: Seek medical help; use appropriate fire extinguishers. Disposal: Follow local regulations; don’t dispose in regular trash. Training: Ensure personnel are trained. Monitoring: Check air quality regularly. First Aid: Have first aid available. Labeling: Clearly label containers.
General information¶
Mix ratio (if applicable): [ratio]
Work time: [time]
Cure time: [time]
Cured material state: [state. example: Matt, smooth, white, solid]
Datasheet and sources:
Links
Process steps & Pictures¶
list and add pictures of the steps to be followed to be able to cast this material. Include weighting, mixing,etc..
Preparation: Wear PPE, ensure ventilation, and know silicon properties. Handling: Use proper tools, minimize skin contact, and work in a ventilated area. Storage: Store silicon properly labeled, away from hazards. Emergency: Know emergency procedures, have first aid ready. Disposal: Follow local regulations for disposal. Monitoring: Regularly check air quality; use ventilation if needed. Training: Ensure personnel are trained in safety protocols. Documentation: Keep records of training and incidents. Review: Update safety procedures as needed based on feedback and new information.
Result¶
include Your opinion (advantages and disadvantages)
Material 2 : [Plaster]¶
Safety¶
Add the safety procedure to be followed with this material. Example: eye or respiratory protection, ventilation, exposure to heat, etc..
Gypsum products are not classified as dangerous If ingested, wash out the mouth and drink plenty of water. Plaster powders/dust potentially may irritate eyes or sensitive skin or irritate the respiratory system. Not flammable Gloves and eye wear recommended
General information¶
Mix ratio (if applicable): [ratio]
Work time: [Approximately 5 mins according to instructions]
Cure time: [time]
Cured material state: [state. example: Matt, smooth, white, solid]
Datasheet and sources:
Links
Process steps & Pictures¶
list and add pictures of the steps to be followed to be able to cast this material. Include weighting, mixing,etc..
Add cool clean water to the mixing bowl/ Bucket Add Gypsum slowly until gypsum is exceeding water level After one minute soaking, properly mix by hand or machine Mix carefully and pour to the mold immediately Shake mold from side to side to release an air pockets for face for the stone
Result¶
include Your opinion (advantages and disadvantages)
Material 3 : [Resin ]¶
Safety¶
Add the safety procedure to be followed with this material. Example: eye or respiratory protection, ventilation, exposure to heat, etc..
Keep out of children’s reach. Store product in a dry place, preferably in the sealed original container, at temperatures between 20c & 25c. Do not swallow. If you swallowed the resin, call a doctor immediately. A face mask should be used for pregnant women while using the product. Wear protective gloves when you use the product. In case the product comes in contact with eyes: rinse cautiously with water for several minutes. Caution: contact with contents may cause an allergic skin reaction.
General information¶
Mix ratio (if applicable): [Mix the exact ratio of 10 grams of Resin to 6 grams of Hardener using a digital scale - Stir the mixture for 3 mins then pour and spread it over the project.]
Work time: [45 Minutes]
Cure time: [24 Hours]
Cured material state: [Solid State]
Datasheet and sources:
Links
Process steps & Pictures¶
list and add pictures of the steps to be followed to be able to cast this material. Include weighting, mixing,etc..
Result¶
include Your opinion (advantages and disadvantages)
printing vs milling molds¶
select a small 3D file, slice it for 3D printing & prepare it for fine milling. Compare the time it would take both, the process of creating the toolpath, the simulated result, as well as the accuracy / resolution of both machines