Wednesday, 4 March 2009

Spider Almsot finished....

Abdomen update

The abdomen has been moulded nicely but with three problems.
1) It becomes very heavily and my aim is to keep as light as possible.
2) The seem line in the mould moves causing undesired flashing.
3) Opticlear-31 will not work at this thinness...

After some research and a few chats with lecture's and Pete Tindall of, the following solutions were made.

1.1) Various fast cast test with filler powder, but most suitable is using the mould to slush near gelled fast cast. Meaning only a thin skin and very little material is used.

2.1) Pinning didn't work "this problem was a result of trying to save on materials" The mould weighed 1kg , if more was used with mould studs it could have been prevented. Lesson learned..... But painting in a fast cast layer allowing to catalyse, then slushing helps the mould hold its rigidity and lessens the imperfection.

3.1) After speaking with Pete and mould life, It should be possible to use 'Easy flow clear' is the same method as the fast cast tests. Meaning I can keep the translucency I require and reduce the weight.

Leg Segments

All the leg segment 'except the back femur' has been cast' These will now be connected togeather blended and prepared for moulding. 'About time'


The basic base structure has been made. Using blue foam and plaster a quick and effective rotten log was made in a few hours. the image above is of sections of my mequette place to test the leg positions. The base works nicely as is A-symmetrical giving the spider a more dynamic pose.

one of my live specimens has produced eggs, this could be an interesting addition to my model?

1 comment:

stev4n said...

I like some of the fibreglass moulds you have created, pretty cool