It depends... Do you have redpower available? Do you want to dedicate one machine per recipe, or do you want to use multiple recipes with multiple machines?
If you dedicate the machine, it is quite simple. An import bus, and an export bus tied to a centrifuge or electroliser will do the trick.
If you want use multiple recipe's with a bank of machines, you need to figure out how to keep a specific number of items fed into the machines without any overs or unders. The RP sorting machine is good at pulling out specific stacks of items. Without RP, things are a bit more difficult. Golems and Translocators can both be configured to allow only a certain amount of items in an inventory. There may also be other options that can be used, but I will leave that to your imagination.