I am literally to ADD to work in dedicated batches.  As Alden said, I know it is better in all aspects production-wise to work with large batches, but my interests wander too much for that.  I have a lot of those magnetic tool holders lined up to hold WIP's.  The far left is for roughed out knives which I have not HT'd.  The far right is for knives that are ready for handles.  Everything in-between is on a spectrum of doneness.  Depending on what I feel like working on that day, I pick one or two and roll on.  Today may be handles, tomorrow may be heat treating, Sunday may be forging Damascus.  Just remember, I am PT only and I do not rely on selling knives to feed my family.  I do not take money upfront, I do not like the stress that creates because if I want to go fishing tomorrow, knife work stops.  Everyone who orders a knife from me knows this ahead of time and are OK with it.  I have been operating this way for a couple of years now and it suits me way better because I was getting stressed out trying to "meet demand" so to speak.  I am overjoyed that people like my work enough to spend their money on it but I was starting to hate making knives and this was my solution because I do not want to feel that way.  This is not really what the OP asked but I felt I would share in case he is going down a rabbit hole I have already escaped from.   Just my way of doing things.