It does sound like you are applying it too thick or there is something else going on you haven't discovered yet. 

We don't recommend brush application of GC50 for infusion as the force presses the carbon into the brush marks making a slight distortion on the weave. It's fine for wetlay as the fabric will float on top of the resin and remain undistorted.

A tip that works for some people to help fisheyeing is to apply a layer or two of Mould Release Wax on top of your chemical release agent. It helps reduce the slippyness of the surface slightly and often that is enough to get a nice application down.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Thanks Warren.

It depends on your compressor but you are wanting to be between 60-100PSI using the standard nozzle as supplied.

Hold the gun approximately 50cm from the surface and use a gentle sweeping action across the mould.

You will probably need to adjust the pressure to suit your compressor as they are all slightly different.  We would recommend a practice on a scrap panel of some kind to help you get the "feel" of the gun and get an even coverage.

In terms of usage you will use 3-400g per square meter for a typical coverage of 0.3-0.4mm, however you will need to mix approximately 500g for each square meter to cover wastage.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

so quantity is not the problem as i´m mixing 150gr for a 1/2 square meter mould...

The "flow control" knob literally controls the flow by adjusting the pressure so there is unfortunately no "rule of thumb" we can advise as it depends on input pressure, viscosity of material being sprayed etc to find the ideal pressure.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

do you have any other video were it is beeing used and sprayed other than the bonnet series?

We don't have any other videos showing the cup gun in use and to be honest, I'm not sure what benefit you would be able to get from a further video.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant