Archive for November, 2010

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Casting, Scraping,Drilling,Wiping,Numbering

November 29, 2010

Now using the rubber master, I have made a number of working plaster molds to use in casting the ornament.

Plaster mold ready for casting.

The casting slip is poured in and allowed to dry.

Filling mold with slip.

Filling the mold with casting slip

Now the back has to be scrapped smooth.

Scraping the back smooth.

A rubber stamp with the pottery logo is stamped on the back.

Stamping on the logo.

When just right, the ornament is popped out of the mold.

Knocking the ornament out of the mold.

Next a hole is drilled through the ornament so a ribbon can be used for hanging

Drilling a hole in the ornament.

Now the edge of the ornament has to be carefully wiped smooth with a damp sponge.

Wiping the edge smooth.

The last step in this part of the process is to number the back, as this is a limited edition. Once the edition is finished the ornaments are not remade.

Numbering the back.

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2010 Limited Edition Christmas Ornament

November 25, 2010

Our 19th Limited Edition Christmas ornament is now finished and in our shop. I thought over the next few posts I would show what is involved in making this come about.

The Finished Ornament

After deciding on an idea, the process starts with a drawing. We decided on a poinsettia an image linked to the holidays.

Rings are cut into a plaster slab, the drawing is transferred with carbon paper and then the image is carved into the plaster. The progress of the image is checked frequently by pressing Fimo into the depression.

When this stage is finished, a casting is made to get the image and the rings raised up. The lettering is carved into this side, so the glaze will pool down in the letters when fired.

Plaster is now cast on this carved and lettered image to get a slab with everything reversed. Pam pressed Fimo on the finished slab and modeled an ornament complete with lug, which takes the hole for the ribbon. Plaster is then cast on top of this Fimo model.

Now I will pour a two part rubber compound over the plaster to get a rubber master mold. From this master, all the plaster working molds will be cast.

In the next post, I will show the casting process.