I am working on an electronics project in which I dispense melted wax at around 70 degrees through a syringe and metal veterinary needle as shown below. The syringe is heated via an aluminium block with embedded heater cartridge. The block sits around the syringe body tightly. The problem I am having is that everything heats up except the needle tip which I have drawn an arrow to in the image below. If i put my finger to the part just above the needle it is hot however the needle is not.
My question is how could I increase heat transfer to the needle tip apart from directly heating it with something like nichrome wire?