"Hi everyone ,Week 15 moulding and casting.This moulding and casting week might be very challenging for me.As i am new to 3D design and all .So i am looking forward to learn more about 3D design and then most important thing is how to do mould and cast the given design.Again in this week i will learn the another angle of SRM-20 to used for moulding.Also the material used for moulding as well.Overall this week is one of the challenging for me .So lets start .....!.
- Review the safety data sheets for each of your moulding and casting materials, then make and compare test casts with each of them
- Design a mould 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
Making the mould with silicone rubber
Now time for casting the mould.To do casting we need to folow some steps as well.So i listed out what we need to do proper casting of mould?
On Thusday morning, our week mentor give us brief idea about this week.During this discussion she actually introduce us about different material ,What is moulding and casting,Design,installation procedure and the process as well.After this brainstrorming she asked to do our group assignment work for that i need to read the datasheet of silicone rubber and thentry to explain others mates as well.So i start reading the things about silicone rubber which i mentioned below.
What is silicone rubber?: Silicon rubber is a thrmoset process that actually combine two compound together and later you need to heat cured in the mould using different catalyst options which i mentioned below.After doing all this exersize it will result into liquid silicone rubber.Now to undestand in detaled about the silicone rubber i finally go through the data sheet mouldsil-15 PLUS i.e.High Performance Silicone Rubber for Long Lasting Flexible moulds )
mouldsil-15 PLUS(High Performance Silicone Rubber for Long Lasting Flexible moulds )
Introduction:mouldsil-15 PLUS is a premium grade condensation curing type Silicone RTV, recommended for mould making applications. This is a flowable grade, having high mechanical strength and cures with various catalyst options (depending on the application requirements) at room temperature to a flexible elastomer, well suited for detailed and exact reproduction of artifacts, figures, architectural items and similar objects. mouldsil-15 PLUS will reproduce the finest detail of the master and is suitable for a variety of art related and industrial applications such as mould making for reproducing prototypes, furniture, architectural items and sculptures.
CATALYST OPTIONS:There are three types of catalyst options.
METHOD OF USE
How to mix silicone rubber?
HANDLING PRECAUTIONS AND SAFETY:mouldsil-15 PLUS contains constituents that have been found to be safe. Hence special handing precautions except general industrial hygiene need to be followed. Catalysts (CAT-24, CAT-16 and CAT-04) contain organo-tin compounds and are flammable and might cause irritation upon contact with eyes and skin. Adequate protective measures are recommended. Refer to Material Safety Data Sheet (MSDS) for safe use of the product
Procedure to used mouldsil and catalyst
Removing few bubbles using sterrer.