Coolant spray block from China for £10.99 – http://goo.gl/Pbzz3o – seems pretty good.  I tested it with my Stanley 5L Compressor and Hailea 55W 70L/Min Air Pump.  Had the aquarium pump been a little more powerful I think it would have sufficed.  Alternatively an air brush compressor may work well. In the next video I will either cut new end plate bracket to increase the the cutting height and reverse the C Beam Linear Actuator or half the Actuator – still in two minds.