3d printers

Plans
http://www.ebay.com/itm/DIY-plastic-injector-mold-machine-PDF-PLANS-/281443092333?pt=LH_DefaultDomain_0&hash=item418750c76d pdf plans on injection molding machine

http://www.ebay.com/itm/281450613268 3d delta printer, plans in solidworks format

http://www.openbeamusa.com/blog/2014/5/22/stay-classy-makerbot Links to delta printer

https://www.kickstarter.com/projects/deltamaker/deltamaker-an-elegant-3d-printer-0/posts/555370

http://www.deltamaker.com/

http://www.inventapart.com/ https://www.kickstarter.com/projects/1650950769/rigidbot-3d-printer?ref=discovery
 * http://www.emakershop.com/browse/listing?l=964 Prusa parts list

reprap

 * http://www.reprap.org http://blog.think3dprint3d.com/

reprappro

 * https://reprappro.com/documentation/ormerod/ Ormerod  https://github.com/reprappro/Ormerod,  uses https://github.com/T3P3/Duet  Duet electronics instead of Ramps

http://www.thingiverse.com/thing:498521 jaws for ormerod

https://www.youmagine.com/designs/mendel90-e3d-v6-bowden-setup mendel90

3dmonster
http://www.3dmonstr.com/, https://www.kickstarter.com/projects/breytblat/3dmonstr-large-industrial-grade-quad-extruder-3d-p 40 microns

makerbot
Makerbot

extruders

 * Micron3dp All metal design" enables working with Polycarbonate up to 300 degrees Celsius
 * http://www.dglass3d.com/

http://richrap.com/?p=121,   http://www.thingiverse.com/thing:23775  Dual extrusion

http://e3d-online.com/The-Kraken,  http://e3d-online.com/E3D-v6/Full-Kit/v6-1.75mm-Universal-Bowden

http://wiki.stoutwind.de/doku.php?id=stoutwinds-rampage-universal-single-extruder, http://www.thingiverse.com/thing:537291  A multipurpose Extruder for 3.00mm filaments. You can use it as bowden or direct extruder. It's compatible with over 40 hotends. There are several tools and adapters included. Has Optimized geometry and variants for square nut and hexagon nut fastening. You get a really precise description for our extruder here: http://wiki.stoutwind.de/doku.php?id=stoutwinds-rampage-universal-single-extruder The extruder development and creation of the description/build information took several weeks and more than 300 hours (including research, development, sorting, photo shooting, rendering, texting, validating, ...). It's build from ground up, inspired by Greg's wade reloaded extruder and many other. It has optical identic features but when you look inside you will see many differences and bonus/comfort features. It's worth to look deeper into.

3d Delta
3d delta printing

Build logs
http://www.danielhansen.net/2013/10/reprap-3d-printer-prusa-i3-build-log.html

Lego
http://www.hpi.uni-potsdam.de/baudisch/projects/faBrickation.html

3d patents
http://b9creator.com/

http://hackaday.com/2014/05/24/makerbot-files-patents-internet-goes-crazy/

3d designs
http://repables.com/

http://www.thingiverse.com

Filament DIY
Filament extrustion

Instructables

 * http://www.instructables.com/id/eWaste-60-3DPrinter/?download=pdf
 * http://www.instructables.com/id/Combination-CNC-Machine-and-3D-Printer/?ALLSTEPS Nylon printing issues

Gear maker
http://www.plagear.com.tw Plastic gears

3d
http://www.3d-printer.co.za

http://www.ultraflow3d.co.za

http://www.sumpod.com/

http://www.indiegogo.com/projects/sumpod-3d-printer-and-mini-cnc-round-2

3D-Manufacturing
http://www.thingiverse.com/thing:7975

You might also want to mention: RepRap -- http://reprap.org Fab@Home -- http://fabathome.org and Thningiverse - http://www.thingiverse.com

Also, even though it's not 3d printing, shopbots might also be worth a hat-tip.

Bearings
http://www.instructables.com/id/Nylon-Printable-608-Ball-Bearing/ Nylonn printable ball bearings