Switching/looping box wiring question

[phuzle]

I want to make a switching/looping box, but with a twist.  There will be one input, which splits into 2 sends, has two receives, and one output.  That much is easy enough.

I also want it to be able to have a stomp switch (might have to be several switches, not sure) to run in 3 modes:
1) the return of send 1 routed to send 2.  1 in series with 2.
2) the opposite: the return of send 2 routed to send 1.  2 in series with 1.
3) the original signal sent to both, returned from both, and mixed together.  1 and 2 ran in parallel.

I've seen people who have made switchers to satisfy modes 1 and 2, but I'm not sure how to incorporate all of them, especially efficiently.  The idea is to have a distortion/filter board and a modulation/delay board, with the ability to run either first or in parallel.  Anyone have some tips on how to get started?

[phuzle]

So my preliminary ideas involve a 3pdt switch to decide between parallel or serial modes.  The parallel side of the switch goes to a circuit to split the signal and send the same signal to both send jacks.  The serial side of the switch goes to a 4pdt switch which determines which goes first and which goes second.  There is a good diagram of this wiring on the beavis techpages.

The only problem I can't figure out is how to have the return jacks go to the right place.  Can I simply wire the return jacks to the 4pdt serial switch as well as the blending circuit from the parallel side?  Seems like that might cause some problems, but I guess I have to plan the wiring further.  Has anyone done something like this before?

[phuzle]

I think I've figured it out, but I'm not sure how to explain it without drawing it, and even then it has to be drawn quite nicely to make sense. 

It basically involves 2 4pdt switches, the second of which is a modification to this: http://www.beavisaudio.com/techpages/PedalHacker/OrderSwitcher.htm

The first 4pdt switch decides whether to go to a splitting and blending circuit or to the second 4pdt.

[solderman]

take a look at "42" it does most of the things you ask for, 1+2 and in reverse as well. It even includes a line buffer. It can give you a start.
Add a third 3PDT and two volume pots with buffered signals to mix the signals together.

http://solderman.fatabur.se/other.html