Introduction: Making a Positive for a Porcelain Mold.

Picture of Making a Positive for a Porcelain Mold.

There are several means of making a mold for porcelain. In this Instructable I will be using a positive of the desired piece to produce a negative void in my mold. 

Step 1: Put Your Idea to Paper (or Monitor)

Picture of Put Your Idea to Paper (or Monitor)

I used Google Sketch up to render my model. Not an intuitive program, but it's free. Being cheap, that's the right price for me. Your drawing needn't be spot on. I only put measurements in mine for general reference. You just need an approximation to give you something to work by.

Step 2: Making the Positive

Picture of Making the Positive

In this case, I turned this out on a metal lathe.  You may want to carve yours out of wax or soft wood. I have even used auto body filler to make a rough shape and refined it later with a rotary tool. Lost wax is nice for detailed work. My next Instructable I will show how to make the mold of the positive. It will be a weekend long project that will require lots of photos.

Comments

Zaphod Beetlebrox (author)2012-05-16

Have you tried blender

Went to Blender. Mind+blender=blown!

Sketch up just doesn't compare, hope you have fun with blender.

Nope, I'll check it out thnx.

About This Instructable

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Bio: I am an aerospace engineering assistant in the research and development department.
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