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FORUMS
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Ray Hope
Joined:
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05-Feb-2006
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Started On : 25-Sep-2006 at 11:51:33 PM, #Views : 6061
Topic Subject : Re: hanging |
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I use a different method again. Not sure if I got it from a video or came up with it myself.
I generally use hydrocal reinforced with glass fibre chopped strand mat. Sometimes I will use resin and glass into a silicon mould. I use the same hanging method for both.
Essentiallt I use plastic masionary inserts with coated metal screws to embed in the casting and later attach heavy duty picture frame wire to the screws. Typically I embed the screws and inserts between the second and third layers.
The first Hydrocal layer is a thin one (approximatly 1kg of Hydrocal for a hips to neck torso). After the second layer of hydrocal (approximatly 2kg of Hydrocal for a hips to neck torso) has been applied, I screw the coated metal screws into the plastic masonary inserts and pick good locations to push them into the setting hydrocal. For a female torso the hydrocal natually pools in the breasts, so that is a good place. Make sure the screws and insert protrude enough to allow for the next layer and to still be accessable enough to attach the wire.
The third and final layer is when the glass fibre chopped strand mat (CSM) is used with the hydrocal. I pour and spread a little into the mould then dip the CSM into the wet Hydrocal and layup into the mould, taking care not to cover the screws, but to make sure there is enough hygrocal and glass to hold them in very firmly.
I use different screw sizes depending on the size of the cast. Typically I would use a 4 or 6 gauge screw about 15 to 20 mm long. With this attachment method it is not going to come out without damaging the cast.
The wire is attached by wraping it around the screws, behind the protrouding head, then twisting around its self.
The only problem I have had was when the wire broke on one of my castings. The wire was rated to 12kg and the cast was only about 5kg, so I was not impressed.
Regards
Ray Hope
www.bimmortal.com
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