grp
Posted: Fri Nov 23, 2007 11:18 pm
Putting a green seat on a fresian cow! Must be peculiar to your area. 
Mark,
One of the basic rules of making a mould, is no negative angles. The seat pod you've made looks excellent, if you make a fibre glass mould you'll have to watch for the small radius on the seat pod where it touches the seat unit. If your mould follows this radius at all you'll have to destroy either the mould or the product to get it out. You'd be surprised how a small negative radius will stop one from releasing the other. Silicon rubber is the way to go
Release agent works well but leaves a lot of finishing work unless you can spray it on, & even then its a pig. Best is 3 + coats bees wax then spray with ptfe dry lube spray & let it dry.Dont be put off ,Just trying to save you some tears
Mark,
One of the basic rules of making a mould, is no negative angles. The seat pod you've made looks excellent, if you make a fibre glass mould you'll have to watch for the small radius on the seat pod where it touches the seat unit. If your mould follows this radius at all you'll have to destroy either the mould or the product to get it out. You'd be surprised how a small negative radius will stop one from releasing the other. Silicon rubber is the way to go
Release agent works well but leaves a lot of finishing work unless you can spray it on, & even then its a pig. Best is 3 + coats bees wax then spray with ptfe dry lube spray & let it dry.Dont be put off ,Just trying to save you some tears