document observations on printing settings

Signed-off-by: Brian S. Stephan <bss@incorporeal.org>

README.md

@@ -47,12 +47,8 @@ about when/how to use specific parts:
 ## Printing
 
 These items all fit on a 256mm^2 print bed; I use a Bambu Lab P1P based on what I've learned from the
-OpenStickCommunity. Standard settings seem sufficiently sturdy for my purposes, though the slicer has done a couple
-weird things, in my experience.
-
-My preferred settings are 3 wall loops with 20% gyroid sparse infill. This gives the models a bit more weight and
-stability, but something like 2 wall loops, 15% grid sparse infill is fine and does not lead to a weak enclosure. The
-costs below have been made against my settings.
+OpenStickCommunity. Standard settings seem sufficiently sturdy, but see `docs/materials-and-printing.md` for more
+thoughts and settings based on my tinkering with prints.
 
 ## Assembling
 
@@ -83,7 +79,7 @@ What you'll need beyond these objects:
 ## Rough Costs
 
 This is a rough estimate of the cost to produce one of these sticks, assuming a usual 2-frame design and layout.
-Filament masses from Bambu Studio estimates, using Bambu PLA Basic.
+Filament masses from Bambu Studio estimates, using Bambu PLA Basic, 20% gyroid infill and 3 wall loops.
 
 * Left and right frame: **$10.42 USD** (208.50g each, as of 2024-02-22)
 * Left and right (inset) top panels: **~$6.40 USD** (~128g each, as of 2024-02-22)
@@ -138,14 +134,7 @@ to hang out and discuss issues and features and whatnot.
 
 ## Attribution
 
-Inspired by the incredible work of [TheTrain](https://github.com/TheTrainGoes) on the [OpenStickCommunity Fightstick
-Case](https://github.com/OpenStickCommunity/Hardware/tree/main/Fightstick%20Case), itself based on the incredible work
-by [Dash n'Mash](https://twitter.com/Dash_xx_Mash?s=20). Original work Copyright 2023 TheTrain, [licensed under CC BY
-4.0](https://creativecommons.org/licenses/by/4.0/).
-
-Made possible by the amazing efforts of [slagcoin](https://www.slagcoin.com/).
-
-## Author and Licensing
+### Author and Licensing
 
 Written by and copyright Brian S. Stephan (<bss@incorporeal.org>).
 
@@ -158,3 +147,23 @@ warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Gen
 
 You should have received a copy of the GNU General Public License along with the Buildable Stick System. If not, see
 <https://www.gnu.org/licenses/>.
+
+### Lineage
+
+Inspired by the incredible work of [TheTrain](https://github.com/TheTrainGoes) on the [OpenStickCommunity Fightstick
+Case](https://github.com/OpenStickCommunity/Hardware/tree/main/Fightstick%20Case), itself based on the incredible work
+by [Dash n'Mash](https://twitter.com/Dash_xx_Mash?s=20). Original work Copyright 2023 TheTrain, [licensed under CC BY
+4.0](https://creativecommons.org/licenses/by/4.0/).
+
+Made possible by the amazing efforts of [slagcoin](https://www.slagcoin.com/).
+
+### Distributing BSS Sticks
+
+Under the terms of the GPLv3, you must inform the receiver of the "object code" of their rights under the GPLv3. This is
+a bit of a gray area for physical objects, but likely applies to distribution of modified or unmodified STL, STEP, etc.
+files at a minimum. The easiest way to satisfy the GPLv3 in either situation is to provide a link to the source code
+(either the unmodified mainline project, or your copy, with modifications listed in a "prominent notice"); something
+like the below should suffice in either electronic or printed form:
+
+> This arcade stick is part of the Buildable Stick System, version X.Y.Z; the source code to this program is available
+> under the terms of the GNU General Public License, at [LINK].

docs/materials.md

@@ -1,25 +0,0 @@
-# Materials
-
-bss's random thoughts and notes on 3D printing materials.
-
-## Bambu Lab PLA
-
-### Basic
-
-* In general, nice texture, but under direct light, you can see a bit of the infill pattern through the walls. Not super
-  distracting, but it's there.
-
-#### White
-
-* Walls are practically translucent, you can almost always see the infill. Do not use for major components.
-* Looks perfectly good for thin things like the Neutrik plates, decorative pieces, that kind of thing.
-
-### Matte
-
-* I don't like the texture as much, but they do produce nice non-primary color colorways, and you don't see the infill.
-* Seems like their plastic treatment leaves some plate residue, so be better about cleaning it or you'll get ghosts.
-
-## Hatchbox PLA
-
-* **Blue:** very blue. Wife likes it.
-* **White:** more opaque than the Bambu PLA mentioned above, makes a pretty decent (still slightly translucent) frame.

docs/printing-and-materials.md

@@ -0,0 +1,47 @@
+# Printing and Materials
+
+bss's random thoughts and notes on the actual printing of the Buildable Stick System.
+
+## Printing Settings
+
+My preferred settings are 3 wall loops with 20% gyroid sparse infill. This gives the models a bit more weight and
+strength against bowing forces, but something more default, like 2 wall loops, 15% grid sparse infill, is fine and does
+not lead to a weak enclosure.
+
+### Working With Flatness
+
+A lot of the pieces are long and flat, so I recommend really dialing in your printer settings. The frame pieces make
+corner curling of the frame less of a problem, but you may still get it on the panels and the beveled frame pieces.
+
+Another thing to consider, in my experience, is the bottom layer pattern. Monotonic prints fast but creates long,
+uniform lines that create reflection patterns on long, flat surfaces. This can be especially distracting for the top
+panels, since they're what you're looking at 90% of the time. Using a non-uniform pattern, like hilbert curve,
+eliminates this problem, but at the expense of a much longer print --- around an hour longer for an inset panel. Other
+patterns may improve beyond monotonic, but hilbert curve seems to be the gold standard.
+
+## Materials
+
+Some notes on PLA brands, usages, etc.
+
+### Bambu Lab PLA
+
+#### Basic
+
+* In general, nice texture, but under direct light, you can see a bit of the infill pattern through the walls. Not super
+  distracting, but it's there.
+
+##### White
+
+* Walls are practically translucent, you can almost always see the infill. 3 wall loops and a varying infill pattern
+  definitely help here.
+* Looks perfectly good for thin things like the Neutrik plates, decorative pieces, that kind of thing.
+
+#### Matte
+
+* I don't like the texture as much, but they do produce nice non-primary color colorways, and you don't see the infill.
+* Seems like their plastic treatment leaves some plate residue, so be better about cleaning it or you'll get ghosts.
+
+### Hatchbox PLA
+
+* **Blue:** very blue. Wife likes it.
+* **White:** more opaque than the Bambu PLA mentioned above, makes a pretty decent (still slightly translucent) frame.