My son is building an "RNLI" lifeboat and needed to build an interior to super detail the boat. It is in 1/25 scale with twin jet boat drive. Apart from interior consoles the seats look to be time consuming to make multiples, so he made a buck to use for moulding.
A look on You-Tube revealed an inexpensive method to make a mould using common silicone sealant available in hardware stores and supermarkets. The secret is to squirt the sealant into a tub of warm soapy water. The sealant is then massaged into a ball for several minutes making it very pliable. The sealant is then pressed into the box containing the buck to be cast. The box can be a very simple affair, however a mould release like cooking oil or Vaseline/petroleum jelly should be applied to both the box internal surfaces and the buck..
After 24 - 36 hours the now cured sealant is removed from the box and the buck removed. One can then flip over the mould and reinsert into the box thus allowing the box to support the mould to minimise distortion when casting.
After casting (my son used polyester body filler used for car repairs) the cast item is removed and then cleaned up and removed of any mould release. This method may not be suitable for casting fine detail, however, in my son's case, it proved to be a low cost alternative plus saved time actually constructing the number of seats required from scratch.
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A look on You-Tube revealed an inexpensive method to make a mould using common silicone sealant available in hardware stores and supermarkets. The secret is to squirt the sealant into a tub of warm soapy water. The sealant is then massaged into a ball for several minutes making it very pliable. The sealant is then pressed into the box containing the buck to be cast. The box can be a very simple affair, however a mould release like cooking oil or Vaseline/petroleum jelly should be applied to both the box internal surfaces and the buck..
After 24 - 36 hours the now cured sealant is removed from the box and the buck removed. One can then flip over the mould and reinsert into the box thus allowing the box to support the mould to minimise distortion when casting.
After casting (my son used polyester body filler used for car repairs) the cast item is removed and then cleaned up and removed of any mould release. This method may not be suitable for casting fine detail, however, in my son's case, it proved to be a low cost alternative plus saved time actually constructing the number of seats required from scratch.
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