After two days of experimenting with lighting bottles of liquid I finally achieve what I wanted.
Lighting products well is not easy and when you are learning it can be frustrating truing to defuse the light so that the product does not show the lighting modifier in the reflection. On my first attempt I use two strip boxes, the first was set back to create the rim light on the edge of the bottle. The other strip box was used to provide lighting to the front of the bottle. The problem I kept experiencing was you could see reflections of the strip box in on the bottle. When I managed to reduce the reflections, the rim light was just not thin enough. The solution I found was to use sheets of tracing paper in front of the strip box, this resulted in the light being really diffused and i was then able to adjust the rim light by turning the soft box further to one side to get the effect I wanted. I then set the other strip box, but decided its spread was not wide enough, I then used a shoot through umbrella and placed tracing paper in over the umbrella, this worked really well.
What could I improve next time?
I could light the bottle top separately and then merge the images together in photoshop.
I should have used a tripod rather than hand holding the camera.
Use a bigger sheet of reflective perspex so I could place other objects in the frame such as a glass.
I am moving on to jewellery next, so I will no doubt learn a few things through trial and error and i will let you know what I learn and share my experiences.
If anyone has any questions or comments, please post them.
Thanks for looking