Errata

We never say what a micron is. Suggest we introduce it in the Fine entry and italicize microns:

Please change:

100 microns (0.0039 in)

to:

.1mm or 100 _microns_ (0.0039 in)

Reader suggests that we point out that what's colloquially called a "calibration cube" is in fact not a cube (height != width or length).

Please change "endstop switch" to "endstop, which is a switch".

Reader asks that we add a scale along x,y,z showing positions in software and origins.

I do not know if this is possible since not all software is consistent in which units it defaults to and where it places the origin, is it?

Please add the following after "moving the extruder instead of moving the model":

"(at least in two directions)"

A reader asks, "what is the thinnest a shell can be"? I believe another way to phrase this would be to ask what is the horizontal resolution (we know the layer height).

Reader asks if you could print part of an object, rotate it, then print more.

Suggest marking not errata and responding that the software and hardware do not support this feature. You'd need a print bed that can swivel under the control of a stepper or something.

Reader asks if there is a way to insert a wait period to let the layer cool before printing.

I believe the answer is yes?MakerWare does appear to use a cooling slowdown with Miracle Grue and Skeinforge. May be worth revising this, because my experience has been that layers with short toolpaths (like pointy things) tend to do just fine because the layer is slowed down as it prints.

Reader asks for a chart of the tools we cover in this book to help decide which one is best, essentially a feature matrix with items such as simplicity level, voxel support. This is worth considering in a future update.