So, been a while since I have posted. The pressure sensors I ordered turned out to be smaller than expected and just too tiny to successfully solder, so I haven't worked on the project for a while. I just ordered a different (much more expensive) pressure sensor that should be easier to deal with (it's much larger and comes more or less assembled with leads large enough to solder or alligator clip to easily). Will post updates again when I have a chance to play with it.

The results I had before show that the basic idea with using pump and injector will work, and I think that will be useful when attempting to scale up to much larger print reservoirs... just have to regulate the pressure so the tubing doesn't explode on me. With pressure regulated, the fluid delivery for each pulse should be extremely consistent, and programmable. Whether it's cost effective or worthwhile to do it this way remains to be seen though. =) As discussed before, to really scale up the printer design, i.e. to print something the size of a car, would probably need a more powerful laser to keep the print times more reasonable and probably some tweaks to the angular control, in addition to the precision drip control. But basically feasible.

It's pretty clear that the basic design of the Peachy printer would easily be able to print car size objects given enough time, and/or scaling up to a larger version of the same basic mechanism. It could really revolutionize rapid prototyping and manufacturing, in addition to the stated goals of making 3D printing accessible to everyone.

I'm so excited that the Peachy printer is going to start shipping soon!