depending on the viscosity of your epoxy, you might want to mix it under vacuum. need specialized equipment. If its anything more then a light syrup, you only get the best results if you mix it under vacuum or mix it in a nozzle. If viscosity is low, there is no benefit.
If you can't do this, I recommend getting a blank epoxy cartridge with a mixing nozzle and refill it with silicone epoxy.
What is your epoxy type? I am interested. I assume its some kind of epoxy silicone.
Also, for complex things, you need to do a vacuum pour, if you pour it in and pull a vacuum, you can make situation worse. But this depends all on viscosity. This is particularly relevant for inductor/transformer winding's.