Originally Posted by hatt11
Could anybody explain the best way to make a grp box with a gelcoat finnish......
I take it you need to make a mould, or is there an easier way?
You need to have a mould. You can make the mould from anything with a smooth (non porous) surface finish either using a "faced" material like formica, or painting wood etc. But the mould doesn't need to be hugely robust, waterproof etc so can be made from cheap material, and put together "quicker" than a "pretty box" would (only one surface of the mould needs to be 'finished').
If the box doesn't need to be a specific size then you could use any other box (e.g. cheap plastic storage box) as the mould.