Making a carbon fibre Channel for LED sequential lighting

I needed a 9mm carbon fibre channel with a 1 mm wall thickness for a sequential LED lighting setup, Firstly as this was a one off project I decided a custom mould would take too long. I set myself a one day target for this project so I had a look what I had lying around in the garage, I found three old registration plates that where 3mm thick so that was the inside sorted. Now I needed something for the outside of the mould so I used two pieces of 4mm thick glass.

Now I had the mould sorted it was time to apply some kind of release, I decided to use vacuum bagging material. Sticking the three reg plates together with double sided tape and then applying the vac bag material with the same double sided tape. Then I repeating the prosses for the glass I used for the outside of the mould.

All I needed to do then was make a vacuum bag up and wet out the carbon fibre with epoxy resin. I used four pieces of 200gsm 0.2mm thick carbon fibre, giving me the 1mm wall thickness I needed when wet out with resin. From start to finish including curing time the hole process was 7 hour for the finished product.