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| Your Trusted Source for Product Design and Mold Making | |||
| More 'How To's' | Making Concrete Products | ||
HOW TO MAKE CERAMIC PRODUCTS
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Making
concrete products involves carefully
measuring the correct ratios of cement to
sand and/or light gravel. Gradually add water
slowly to the dry mix and continue mixing the
concrete to a working consistency.
Pour
the concrete mix into the rubber mold (made
from RTV polyurethane). Make sure that
no air bubbles are trapped and that the
concrete mix is reaching all areas by gently
shaking or tapping the mold. The
minimum time to de-mold a newly formed piece
of concrete is 24 hours. The
mixing of the concrete, the pouring, and
de-molding of the items are relatively
simple. Care should be exercised to ensure
that the many outdoor garden ornaments have
the quality to survive harsh freezing long
winters and searing hot summers. At
Masterline Molds, we have formulated our own
mix of cement and gravel to produce a light
grey product. Our concrete formula was
tested outdoors for many years in all types
of weather conditions. We market our
concrete products as "Winter Hardy" to ensure
that our products will last outside through
all types of weather conditions. Most
of the concrete garden ornaments are cast
using polyurethane rubber molds. The
larger garden pieces and statutes are cast
using latex molds. Latex molds are more cost
efficient than the polyurethane molds.
However, most latex molds will last only one
season or in some cases, only part of a
season, depending on the amount of wear and
tear. | ||