Alginate colour change

Alginate colour change first cast attempt. 

It's very safe to use, which is why you don't need to wear gloves or goggles. It is often used during the process of creating braces at dentists. 

The Alginate gel is white powder mixed with water which changes colour depending on the phase it's at during mixing. After the first initial mixing it goes bright pink and as it starts to set gets lighter, eventually changing back to white. 

After the bright pink is smooth (no lumps, fully mixed) place the object of what you want to cast. It's a flexible mould perfect for impression making. 

Hold your object in the mould until the jelly like substance is back to white and is retaining its shape. At this point you need to mix the fine plaster and pour that into the now set mould. 

Wait until the plaster is set (don't make the mistake I made originally by not letting it set enough and it all falling apart). When the plaster is set peel away the Alginate gel to reveal your plaster cast. 

The Alginate has a fine grain so it takes all the details from your object. It's designed to creep into the crevices and retain the integrity of the object but by also letting you remove the object without harm to said object or the cast.