Best filler to use for GRP?

[allanb]

As with most Tamora's I have a front splitter that is quite well scuffed.

I'm thinking of filling and repainting, but is there filler that is better to use than others?

An recommendations?

Cheers
Allan

[TA14]

Pretty much any automotive filler but note that it should only be used to fill the pin sized air holes that haven't been stippled out. The main repair should be done using fibreglass and matting/tissue depending on the size of the repair.

[Barry Ashcroft]

Use P40 for the repair and P38 to make perfect. Did mine several times easy job to make nice