This is my first question asked so please take it easy on me if I omit something!
I know someone will have asked this question of google previously but I can't find an answer for the life of me.
My goal is to automate the ore to ingot process from my ME network using Thermal Expansion machines. I want a bunch of specified ores to be automatically turned into ingots upon entry into the ME network with a caveat that one stack (64 ore) should always remain in the ME network. This is so that I can do whatever I please, on demand, with the ore for whatever purpose arises.
I have created the system of my choice as shown in the screenshots but I cannot work out how to create an instruction to always leave 64 of the ore in the ME network. I believe that ME Level Emitters can be used to control how many items are sent to a machine, but I kind of want the opposite: I want all items sent to the machine (in my case, an Induction Smelter) to be turned into ingots with 64 ore always left behind in the ME network.
To explain the system (screenshots) I have tested in creative so far:
1x precision export bus continually filling one of the Induction Smelter input slots with sand.
2x hoppers connected to 2x precision export buses to input defined ores into the Induction Smelter. I have used two export buses as it is only possible to specify eight ores per bus and I will probably be specifying more than this to be autosmelted into ingots.
1x basic import bus which transfers the output and secondary output back into the ME network when the process is complete.
This is currently working exactly the way I want it to except not being able to control 64 ore blocks being left in the ME network unsmelted.
Is there a way I can achieve this using purely Applied Energistics and Thermal Expansion items?
I am using FTB Monster v1.1.1 MC v1.6.4
Many thanks in advance for any help or suggestions.