Hi all,
Before I start I would like to say I am more or less a fibreglass novice, I have done some basic car body repair jobs before but nothing fancy, and this is just for fun. I do not claim to be a master fibreglass worker/molder or even a good one
However I wanted to see if I could build a Westwood grille (the type that was used from the Gazelle to the early T and D series tractors). These grilles look pretty cool in my opinion and I wanted to see if I could recreate one out of fibreglass. So I needed a mold, and given I have lots of amateur experience with concrete I decided there's no kill like overkill and I would use that for the mold (cast?).
So to start off I needed to use a spare grille I have as a base, and I covered it in tin foil with pritt-stick. I am happy to say this resulted in no damage to the grille after I removed it.
Then it was time to build up the concrete mold, using a mixture of 4 parts sharp sand, and 1 part cement powder, and using screws and nails and scrap metal to increase the strength.
The mold is now finished, and I will post a picture of it below.