Thought I would share some pics of my first use of the epoxy mould kit from EC. Ive come from a background of motorsport and aerospace using expensive materials and tools so its good to get my hands dirty with something that anybody can pick up and make there own moulds.

Firstly its a comprehensive kit, I went for the big kit as I have a few moulds to make and I was pleased that it comes with all the wax/pva,gelcoat and of course 2 part epoxy paste in a nice and easy to carry tub.

I made some wet lay carbon sheet last week using the good old glass method and as the glass had been released, it would be a shame not to use it for my first mould, which is for my friend as he wants some new mirrors for his super seven but using a nice coloured pre-preg.

The materials are pretty easy to use and the gelcoat is a great colour making it easy to see where you haven't placed any material. Mixing up the epoxy paste was pretty simple and not that messy if you use a plastic bag and the provided gloves.
Looking forward to seeing the results on monday as I done it at work as its always nice and warm

Yeah ... I use the EC "greeen -goo" and the Epoxy putty a lot.   I think I'm at the bottom of my third 5 kg bucket of Putty ..   Great stuff...

On of my moulds now has 30+ pulls from it, with only minor repairs and polishes ...

"Sapere Aude"... Dare to KNOW!

The written word is the only truly efficient vehicle for transmitting a complex concept from mind to mind...

103% of all people do not understand statistics...

Do not adjust our mind, theres a fault in reality :-)

unfortunately it didn't go to plan, all my own fault though as I thought I would be able to pull the original part from the mould without making it two piece, as a friend had made a one-piece machined ali mould for making the same part!
To cut a long story short there is a slight undercut on the part, and I couldn't remove the original part/plug so Ive had to cut the mould and destroy it
Ive found out from my friend he modified his ali tooling because of the same issue

But ive learnt a lot from using the material for the first time, I did notice that 90 degree corners where the wax met the glass weren't fully consolidated and I needed to make the thickness more uniform all over the mould.
Will upload a photo in a moment, but this week i will prep the parts again and make a two-piece mould, good thing I bought the large tub

I found it better to put two thinner coats of the tooling coat down, seems less prone to pinhole/ voids at the face.

you need to allow more time working this way as you will need that extra few hours for the second layer.

the gel coat was pretty good and a reasonable thickness, but I was thinking of adding a second layer to allow for sanding/polishing and for durability. How long did you leave the first coat to tack off for?

Around 3 hours at room temperature, as long as its tacky but solid enough to lean on with a brush you are ok to go.

I get set up in the week and then spend Saturday laying up.

started working on the new split tooling for the mirrors today, as above ive gone for a double layer of gel coat just to give me a nice amount to wet sand incase i need too.

Good technique with split mold, I do the same with parts I know will be difficult to remove from the mold 

bit of an update, finished laying up the split mould but had a couple of issues with the new one piece moulds, with what looks to be warping of the mould? I will get some photos of that later as Its something strange?