diff --git a/computer_machining/index.html b/computer_machining/index.html
index fbf0601a2fa82f2439932c6b6e3743db385511f4..f1b9e809fc80aedfff32c713bda82e40433c8c45 100755
--- a/computer_machining/index.html
+++ b/computer_machining/index.html
@@ -14,7 +14,7 @@
<pre><font face="bitstream vera sans,arial,helvetica,sans-serif">
<b>projects</b>
- <a href=https://www.forbes.com/sites/kerryflynn/2014/07/31/how-to-make-a-standing-desk-for-under-200-mit-grads-go-digital>Standing Desk</a>, <a href=https://www.opendesk.cc/>Opendesk</a>, <a href=http://atfab.co>AtFab</a>
+ <a href=http://fab.cba.mit.edu/classes/863.13/people/nitsky/week5.html>Standing Desk</a>, <a href=https://www.opendesk.cc/>Opendesk</a>, <a href=http://atfab.co>AtFab</a>
<a href=http://www.shelter20.com/>Shelter 2.0</a>, <a href=http://blog.ted.com/digitally_fabbe/>yourHOUSE</a>, <a href=https://wikihouse.cc>Wikihouse</a>, <a href=https://fablab.hochschule-rhein-waal.de/fabhouse-en>FabHouse</a>, <a href=https://archello.com/project/the-fab-lab-house>Fab Lab House</a>
<b>machines</b>
@@ -65,11 +65,13 @@
<a href=http://inventory.fabcloud.io/?purpose=Computer-Controlled%20Machining><b>tooling</b></a>
drills <i>vs</i> mills
router, V bits
- flutes
+ number of flutes
coatings
center-cutting
- up/down cut
+ up, down, straight cut
flat/ball end
+ tapered
+ extra long
<a href=http://new.industrialpress.com/machineryhandbook><b>speeds and feeds</b></a>
chip load: ~ 0.001-0.010"
@@ -79,7 +81,7 @@
<a href=http://www.mcmaster.com/#machining-lubricants><b>lubricants</b></a>
-<a href=http://www.mcmaster.com/#abrasive-powders><b>abrasive machining</b></a>, <a href=https://ng.cba.mit.edu/show/slide/24.06.Pilchuck.png><b>grinding</b></a>
+<b>abrasive <a href=http://www.mcmaster.com/#abrasive-powders>slurry</a>, <a href=https://www.amazon.com/s?k=abrasive+bits>bits</a>, <a href=https://ng.cba.mit.edu/show/slide/24.06.Pilchuck.png>grinding</a></b>
<b>fixturing</b>
vises
@@ -97,12 +99,14 @@
<b>dust collection</b>
-<a href=../computer_cutting/flexures.png><b>flexures, living hinges, kerfing,</b></a> <b><a href=https://www.google.com/search?q=steam+bending&tbm=isch>steam bending,</a></b> <b><a href=http://packardforestproducts.com/bending-plywood>wacky wood</a></b>
-
<b><a href=https://www.mcmaster.com/fasteners>fasteners</a>, <a href=https://www.mcmaster.com/adhesives/glue>glues</a></b>
+<a href=../computer_cutting/flexures.png><b>flexures, living hinges, kerfing,</b></a> <b><a href=https://www.google.com/search?q=steam+bending&tbm=isch>steam bending,</a></b> <b><a href=http://packardforestproducts.com/bending-plywood>wacky wood</a></b>
+
<a href=https://www.thingiverse.com/thing:169723><b>joints</b></a>, <a href=https://www.instructables.com/50-Digital-Joints-poster-visual-reference/><b>joinery</b></a>, <a href=https://link.springer.com/article/10.1007/s00004-014-0181-0><b>reciprocal frame</b></a>, <a href=https://www.google.com/search?q=tensegrity&tbm=isch><b>tensegrity</b></a>, <a href=https://digital.nls.uk/scientists/archive/74629052><b>Maxwell criterion</b></a>
+<b><a href=https://aprubio.com/2025/01/13/metallic-kusudama/>folding</a></b>
+
<b>toolpaths</b>
kerf, offset, runout
conventional, climb
@@ -124,7 +128,7 @@
<a href=https://camotics.org>CAMotics</a>
<a href=https://www.shopbottools.com/products/software>VCarvePro</a>
<a href=http://www.featurecam.com/>FeatureCAM</a>
- <a href=http://www.mastercam.com/en-us/>Mastercam</a>
+ <a href=http://www.mastercam.com/>Mastercam</a>
<a href=http://www.hsmworks.com/>HSMWorks</a>
<a href=https://camworks.com>CAMWorks</a>
<a href=https://www.freecadweb.org/wiki/Path_Workbench>Freecad Path</a>
diff --git a/electronics_design/index.html b/electronics_design/index.html
index 0cdf41634332f85a65f99bb0aaa573ac5747adab..6a43aa9c379cac46a84882d29dd013e5c92d3dca 100755
--- a/electronics_design/index.html
+++ b/electronics_design/index.html
@@ -94,7 +94,7 @@
use the test equipment in your lab to observe the operation
of a microcontroller circuit board
<i>individual assignment:</i>
- use an EDA tool to design a development board
+ use an EDA tool to design and check a development board
that uses parts from the <a href=https://inventory.fabcloud.io>inventory</a> to interact
and communicate with an embedded microcontroller
extra credit: try another design workflow
diff --git a/electronics_production/index.html b/electronics_production/index.html
index 5c02dcbbd50ecb2beee2ae47c6963da4fd4443b8..e6d6b59c59c89f26b8a28e012e1478b522032006 100755
--- a/electronics_production/index.html
+++ b/electronics_production/index.html
@@ -18,7 +18,7 @@
<a href=https://www.4pcb.com/media/presentation-how-to-build-pcb.pdf>lithography</a>, <a href=https://hackaday.com/2016/09/12/take-your-pcbs-from-good-to-great-toner-transfer/>transfer</a>, <a href=https://www.youtube.com/watch?v=RudStbSApdE>print</a>
ferric/cupric chloride, ammonium/sodium persulfate
<a href=http://fab.academany.org/2020/labs/kamakura/students/toshiki-tsuchiyama/assignments/week04/#5-make-etching-liquid>citric acid, peroxide</a>
- <a href=https://us.vwr.com/store/search/searchMSDS.jsp>SDS</a>
+ <a href=https://www.osha.gov/sites/default/files/publications/OSHA3514.pdf>SDS</a>
<a href=https://www.researchgate.net/publication/235313645_Water_use_in_the_printed_circuit_board_manufacturing_process_and_approaches_for_reducing_consumption>water consumption</a>
<a href=https://archive.epa.gov/sectors/web/pdf/01050.pdf>waste</a>
<a href=http://www.youtube.com/watch?v=XdamEhs2RIk&list=PL-xEsC0ZUCUM42QNHaOOdoOwYg0j251dU&index=1>machining</a>
@@ -113,7 +113,7 @@
<a href=https://www.amazon.com/TOAUTO-Soldering-Conversion-Temperature-Correction/dp/B08L8YGYQZ>hot air</a>
<a href=gravity.jpg>gravity</a>
<a href=../output_devices/I2S/hello.MAX98357A.RP2040.fix.jpg>cutting traces, adding jumpers</a>
- <a href=https://www.google.com/search?q=bga+rework+station>placement</a> <a href=http://cba.mit.edu/tools/index.html#Mechatronika_M10V_Pick_and_Place>pick-and-place</a>
+ <a href=https://www.google.com/search?q=bga+rework+station>placement</a> <a href=https://www.opulo.io/products/lumenpnp>pick-and-place</a>
encapsulation
<b>CAM</b>
@@ -135,7 +135,7 @@
measure supply voltages
probe I/O signals
-<b> <a href=https://fabacademy.org/2020/labs/ulb/students/quentin-bolsee/assignments/week05/>assignment</a> <a href=https://fab.cba.mit.edu/classes/863.24/people/IsaakFreeman/week6/week6.html>assignment</a> <a href=https://gitlab.cba.mit.edu/quentinbolsee/tracking/-/raw/main/img/pcb_upside_down.jpg>assignment</a> <a href=http://fab.cba.mit.edu/classes/863.17/CBA/people/seanhickey/weeks/06-large-format-machining/>assignment</a> </b>
+<b> <a href=https://fabacademy.org/2020/labs/ulb/students/quentin-bolsee/assignments/week05/>assignment</a> <a href=https://fab.cba.mit.edu/classes/863.24/people/IsaakFreeman/week6/week6.html>assignment</a> <a href=http://fab.cba.mit.edu/classes/863.17/CBA/people/seanhickey/weeks/06-large-format-machining/>assignment</a> </b>
<i>group assignment:</i>
- characterize the design rules for your in-house PCB production process
- submit a PCB design to a board house
diff --git a/scanning_printing/index.html b/scanning_printing/index.html
index b28b5ade4378a7ca22b13146873005507ed3e4b4..90bc093553699ef090b3781ff3056bd71d265f61 100755
--- a/scanning_printing/index.html
+++ b/scanning_printing/index.html
@@ -46,7 +46,7 @@
<a href=http://cba.mit.edu/docs/papers/22.12.Biomaterials.pdf>lifecycle</a>
<a href=emissions.pdf>ventilation</a> <a href=https://blog.prusa3d.com/the-original-prusa-mk4-and-mk4s-are-ul-greenguard-certified_101657>certification</a>
<a href=designrules.jpg>design rules</a>
- <a href=https://n-e-r-v-o-u-s.com/projects/albums/kinematics-link/>supports</a> <a href=https://help.prusa3d.com/article/support-material_1698>types</a>
+ <a href=https://n-e-r-v-o-u-s.com/projects/albums/kinematics-link/>supports</a> <a href=https://help.prusa3d.com/article/support-material_1698>types</a> <a href=https://fabacademy.org/2025/labs/bottrop/students/julian-bassler/assignments/week05/>design</a>
overhang <a href=overhang.FCStd>FCStd</a> <a href=Prusa/overhang.jpg>jpg</a> <a href=overhang.stl>stl</a>
clearance <a href=clearance.FCStd>FCStd</a> <a href=Prusa/clearance.jpg>jpg</a> <a href=clearance.stl>stl</a>
<a href=https://news.mit.edu/2020/defextiles-leveraging-3d-printer-defect-to-create-quasi-textiles-1020>unsupported</a>
@@ -144,7 +144,7 @@
<a href=MarchingCubes.pdf>marching cubes</a>
<a href=https://help.grabcad.com/article/230-guide-to-voxel-printing>voxel print</a>
<a href=https://reprap.org/wiki/G-code>G-codes</a>
- <a href=https://shop.thehueforge.com/>images</a> <a href=https://www.nonplanar.xyz/>non-planar paths</a> <a href=https://www.cnckitchen.com/blog/arc-overhangs-a-new-way-of-printing-without-supports>arc overhangs</a> <a href=https://www.cnckitchen.com/blog/brick-layers-make-3d-prints-stronger>brick layers</a>
+ pause <a href=https://shop.thehueforge.com/>image</a> <a href=https://www.nonplanar.xyz/>non-planar</a> <a href=https://www.cnckitchen.com/blog/arc-overhangs-a-new-way-of-printing-without-supports>arc overhang</a> <a href=https://www.cnckitchen.com/blog/brick-layers-make-3d-prints-stronger>brick layer</a>
<b>software</b>
<i>meshing</i>