📝 Making a Fibreglass Keel for Scale Yachts.
As I am currently making some keels for my own use and another Model Boats Website member, I thought it might be useful to share some of the processes involved.
My friend Brian Clewes had previously made a mould to cast keels for his own yachts and has cast some for other club members and my models. He kindly let me borrow his mould shown in the pics with a wax and soap type release agents.
You will also need Gel coat resin, Laminating resin and MEKPT hardner. To clean up I use Acetone and Iso Propyl Alcohol, Paper towels and Vinyl Gloves. I use a small plastic bowl from a fruit jelly to mix and a small brush to apply.
The first job is to clean the mould with IPA then apply a thin coat of release agent and leave to dry (15mins in warm weather). When dry mix the required amount (marked on the tin) of Gel Coat and MEKPT hardener well to ensure it will all set. Brush the gel coat over the release agent making sure all is covered. The outer edges of this mould are not used so remain uncovered. Setting time will vary depending on the temperature but eventually the surface will go dry but remain tacky, ready for the Glass cloth and layup resin.
I will cover that in part 2