3D Printing Sellers and Items

• Bold - sellers/items I have personally had good experience with
• Non-bold - sellers/items I have only heard are good, or are just generally large/well-known

Sellers

Aliexpress - China

• 3DSWay - general 3D printer parts
• AnyCubic - delta stuff
• Ali Brother - the Griffin guide says good silicon heaters
• BST Automation - good linear guides
• DuoWeSi - general 3D printer and CNC parts
• FYSETC - stepper drivers which work most of the time
• HongYi Automation - integrated lead screw motors, packed well
• IdeaFormer - general 3D printer parts, kapton tape
• linkcnc - general 3D printer and CNC parts
• Keenovo - silicon heaters
• MakerBase (aka MKS) - control boards
• MicroMake - delta stuff
• Powge - bearings, pulleys, idlers. GREAT customer service
• Reprap "Official" Store - general 3D printer parts
• SWMaker (aka Queen Yuki) - general 3D printer parts, apparently good customer service
• Wantai Motor - stepper motors
• YuYong 3DMaker - v-slot, v-wheels, extrusion plates, openbuilds clones
• Xinlong Factory (Xinfact) - aluminium extrusion, V-wheels

eBay - Int'l

• Antclabs - genuine BLTouch
• HaoZhong - carbon fiber tube/rod
• HKSupport - genuine Gates GT2 RF belt
• PowerNex TW - genuine Mean Well power supplies

eBay - Australia

Also on a separate list: Australian Sellers

• Aurarum - expensive filament, extrusions
• Aus3D - all sorts of parts, genuine E3D
• Chaddy 3D store - V-slot
• CNC and Cupcake World - CNC parts, lead screws, etc
• Cubic Technology - eSun filament
• DNK Systems - genuine BuildTak
• eshop1may - china stuff, but at least it's cheap and local
• eshop5may - china stuff, but at least it's cheap and local
• Layr3D - general 3D printer parts, genuine PEI
• Kingdom3D - eSun filament
• Lateral Design - rods and bearings
• LearCNC - general 3D printer parts, good quality
• MakerMates - V-slot, other parts
• Maker Store - V-slot, OpenBuilds stuff
• Mid North Coast Components - reasonably cheap fasteners
• Plate Sales Tas - random aluminium plate
• Plaig Bearings - radial bearings
• Stepper Online - stepper motors
• SydDIYShop - extrusion, rods, bearings

USA

• Deltaprintr - curious about Mini Hotend
• Filastruder - genuine E3D
• Gizmo Dorks - genuine PEI
• Panucatt - Re-ARM boards
• SeeMeCNC - delta stuff
• Ultibots - delta stuff

Europe

• Duet3D (UK) - genuine Duet3D
• E3D (UK) - genuine E3D (duh)
• OozNest (UK) - general 3D printer parts
• reprap.me (Denmark) - general 3D printer parts, Due and RADDS
• StaticBoards (Spain) - Premium RAMPS and other stuff
• Watterott (Germany) - good stepper drivers

Non-3D Printer Stuff

• Anker - USB power banks and chargers
• BlitzWolf - good USB cables
• GameSir - not-totally-terrible game controllers

Items

• BigTreeTech RAMPS 1.6 - interesting
• Delta Corners - Micromake - injection molded
• Delta Corners - SWMaker - aluminium
• Gates GT2 RF 6mm belt - HKSupport
• MKS GEN
• MKS GEN_L - good cheap 8-bit control board
• MOSFET - MKS - probably the same as the Tevo one
• MOSFET - Tevo - this is the one I have
• PEI for LulzBot TAZ - genuine in Australia
• StaticBoards Premium RAMPS
• Stepper motor set - I have these 4 on my HyperCube
• V-wheel Delrin - lot of 20 from Xinfact
• V-wheel PC - lot of 20 from Xinfact
• Worm Gear - used in the KISS belted Z

Low Tier

• Banggood - low quality dropshipping of parts that sometimes work

Aliexpress Sellers

• AZSMZ - poorly-made smoothieboard clones
• BigTreeTech - mediocre electronics
• Creality - CREALITY CR-10 BEST 3D PRINTER 2018
• Tevo - TEVO TARANTULA BEST 3D PRINTER 2017
• TriangleLab - useless "smoothers" with 4 diodes, crap titan clones

Jerks - Do Not Buy

• GearBest - the whole site, avoid it, avoid anyone shilling affiliate links
• Sintron - useless crap which doesn't work