@triphi, I'm quoting your post from another topic, to keep things organized:
I have seen some companies using an electromechanical system to switch between multiple filament, which share a single drive system.
As I can only guess at your drive method, I do not know how it would adapt.
That's an interesting design suggestion, can you suggest a good example of this to look at?
I still think that adding multiple extruders to the product being distributed through the kickstarter campaign would be too much of a departure from our current design to deliver on time and on budget to our backers.
I am hearing this as a very strong request that I think we will want to investigate.
Let me ask this: given the $300 CAD cost of our basic unit, what would you pay for a dual extruder unit, which could be driven and extruded independently?