thingiverse

free

4mm-4mm OD PTFE Tube Coupler / Joiner by sjutmp

... 360 and 3 attempts to build and test this. the central section will block the tube an provide a pass thru for the 1.75 filament.

thingiverse

free

Pipe Bender R 10mm OD 4mm by HellfireHD

...pipe bender r 10mm od 4mm by hellfirehd thingiverse

thingiverse

free

4mm-4mm OD PTFE Teflon Filament Tube Coupler / Joiner by TiagoDNC

...r flavour to the collection :)... now you have the: 4mm tube joiner cncartis has: 6mm to 4mm tube joiner 6mm tube joiner enjoy ;)

thingiverse

free

4mm to 6mm OD PTFE Teflon Filament Tube Coupler / Joiner by cncartist

...ess fit into the coupler and should fit quite snug without deformation. the tubes insert ~12-14mm into each side for a good fit.

thingiverse

free

6mm od x 4mm id x 2mm spacer / washer for stuff. by Ganderloof

...iverse this is a little spacer to use when you get small gaps mounting stuff. sized for m3 hardware and similar sized hardware.

thingiverse

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Flashforge CP Adapter for Bowden Tube Teflon 2mm ID 4mm OD by k-eye

...e this is an adapter for the flashforge creator pro. if you use your own bowden tube for filament it might be useful for you.

thingiverse

free

Grommet for filament coming out of a plastic box into 2mm/4mm OD by trs998

...u'll need: 3x m3 nuts (recesses for them in the print) 3x m3 10mm bolts (or a bit thicker if you have a box thicker than 2mm)

thingiverse

free

Bowden extruder for 1.75mm filament and 1/8" push fit coupling (used for 4mm OD tubing) by sheffdog

...fit coupling, it now screws in perfectly straight off the printer, i also tapered the filament entrance to the push fit coupling.

thingiverse

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PTFE Tube Coupler (4mm OD) by filiptw

...nd the biggest continuous exposure area is inside the mmu2s mechanism itself, which is directly above the printer's hotplate.

thingiverse

free

groove mount 1/8" NPTF pushfit adapter (1.75mm/2mm ID, 4mm OD) by corecode

...pushfit adapter. like e3d's version, just for 1/8" nptf pushfit adapters. using the fantastic openscad threads library.

thingiverse

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Setup for 4mm ID/6mm OD Bowden Tube (Ultimaker) by futurejames

.... hoping these instructions save you that grief! :d as an added bonus the new tube is way less finicky about filament thickness.

thingiverse

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15mm OD x 4mm ID x 1mm Thick Washer by NightRunner417

...t type washers. then you nor i ever need to go visit lowes for a washer ever again, at least until the printer breaks on tuesday.

thingiverse

free

Pneumatic Coupling PC4-M6 - 4mm OD PTFE Tubing - 6mm Thread by tezz

...modifications, thanx i always add the original creation file not just the stl, so if people want to play with the design they can

thingiverse

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Filament Park for 4mm OD PTFE Tube - Pushfit Connectors by jcatx

...4mm x 1/8" pt male thread amazon link: http://a.co/0uf1cac mode: jpc4-01 thread size: 1/8" pt thread diameter: 9.4mm update...

thingiverse

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XYZ Calibration Cube - 4mm OD tube cutting jig by indyToronto

...the cut area should be perfectly at right angle if your knife is sharp. so this is a calibration cube that is also a useful tool.

thingiverse

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4mm teflon tube holder for Prusa i3 - Remix by Mikaelj

...4mm teflon tube holder for prusa i3 - remix by mikaelj thingiverse made a version of this holder for teflon tubes od 4mm id 2mm.

thingiverse

free

PTFE tube 45° beveling jig for 4mm OD 2mm ID tubes by HalleoPard

...9 if you need something to cut a 60° bevel inside the other end of the tube, try this : https://www.thingiverse.com/thing:3428779

thingiverse

free

Tricopter Yaw Mechanism/ Mount by tmlowe

...mounting holes: 20mm spacing shaft diameter: 4mm bearing size id: 4mm od: 8mm flange od: 9mm width: 3mm tested and works great.

thingiverse

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Joint for 4mm or 6mm tube by jesi

... thingiverse i had to join two 6mm (od) tubes, so i made this joint. there is also version for 4mm, but not tested, let me know?

thingiverse

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Enclosure filament guide PTFE by climber4fun

...at you can insert the 4mm od ptfe tube to avoid friktion. enclosure: < 20mm hole to drill: 13mm pfte tube: 4mm od fitting: m10

thingiverse

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Mainboard stands 8mm high by M3D_print

...mainboard stands 8mm high by m3d_print thingiverse standart mainboard stand 8mm high 4mm id 8mm od

thingiverse

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Wade L3K Extruder 4mm bore by axelsp

...l files are exported from sketchup and run through netfabb. if you require fan mounts, the original l3k parts will of course fit.

thingiverse

free

Single Piece Pump - Enhanced - 6mm OD 4mm ID Silicone Tube by ramkam

...ting inaccuracy better tolerance to material creep among time (in theory, will tell you in a few weeks) more pumping power enjoy

thingiverse

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Arrow Spinner by Splashdown

...arrow spinner by splashdown thingiverse arrow spinner using standard bearings. bearings are 5mm deep, 13mm od and 4mm id.

thingiverse

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Filament Guide for for original MK3S spool holder with Hole by mappler

...be from a drybox mounted above the printer. the top of the hole will accept the 4mm tube, but it will not pass through entirely.

thingiverse

free

Rostock Hotend Mount / Bowden Clamp by piit79

...en tube clamp. it fits j-head hotends (and other hotends with 16mm od). it uses m3 screws instead of m4 to mount to the platform.

thingiverse

free

Filament guide + bowden tube ender 3

...filament guide + bowden tube ender 3 thingiverse you will need 1 m6 and 1 m10 bowden connectors and ptfe tube 4mm od.

thingiverse

free

Filament Guide for Ender 2 by Poliflex

...or ender 2 by poliflex thingiverse clip-on - no drilling to any metal parts required. insert a short piece of ptfe hose (od 4mm)

thingiverse

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Miniature Washstand (bathroom) by kot1759

...miniature washstand (bathroom) by kot1759 thingiverse support need 4mm id / 6mm od silcone tube. tutorial video 16:47 ~ 18:50

thingiverse

free

PTFE tube cutter 34mm long by VinceHall

...ptfe tube cutter 34mm long by vincehall thingiverse jig for cutting ptfe tube 4mm od x 2mm id x 34mm long

thingiverse

free

Small peristaltic pump for 28BYJ-48 stepper motor. by jsvorc

... i was looking for some peristaltic pump with larger diameter. i check thingyverse and found only small pumps so i designed mine.

thingiverse

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Pin and Spacer for Moulded Enclosure Mount (PE1295K) by refractive-space

...5.5mm (od) x 4mm related components:arduino uno moulded enclosure mount (pe1295k)motor controller (l298n) moulded enclosure mount

thingiverse

free

Wanhao Duplicator i3 Filament Guide Tube Adapter 4mm by Jeffeb3

...9;t import into slicer (0 size). i went ahead and just scaled the hole by 0.667, which is enough to fit the 4mm od tubing snugly.

thingiverse

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Cable_Clip4mm by ReddeathMX

...erse cable clips for 4mm cable. made it to guide 3mm to 5mm od jacket cable. can be glued or fixed with short nail or 3mm screw.

thingiverse

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ve5yan by ve5yan

...), and the center hole is too small for a 4mm screw. new disc specification: od = 52.8mm, inside hole id = 4.66 (free to rotate).

thingiverse

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Seeker Mine Spinner by -DK0-

...thingiverse the division 1 seeker mine spinner. based on mode by jdteixeria. bearing: 624zz (4mm id x 13mm od...

thingiverse

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Filament Cleaner 1.75mm by 271828

...giverse clips onto 4mm od tube, uses soft foam, installs without the need to remove the filament and helps prevent nozzle clogs.

thingiverse

free

PnP Extruder by eyigit

...tube 4mm m6 female pineumatic connector 4mm m6 tube (you can do it yourself with m6 threader from aluminum tube (od:6mm id:4mm))

thingiverse

free

Prusa MK3/MK2.5 filament reverse cover bowden by OkurRo

... bowden by okurro thingiverse this is modified version od prusa mk3 filament cover for m5 nut, and m5 4mm tube pneumatic fitting

thingiverse

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Infinity Cube by LlamaMan

....5mm connectors the cubes. optionally, 4mm od ptfe tube can be used with the 4.5mm connectors to provide smoother cube movements.

thingiverse

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Delta Flying Extruder by Charlio99

...e used with the e3d titan extruder. the holes are made for m4 screws and the tube i used is a silicone tube of 4mm od and 3mm id.

thingiverse

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Filament straightener bearingless by Hitchabout

...dy in play 4mm od ptfe tube throughout instead of bearings.or without a tube. if it needs to be modifiedhttps://a360.co/2e3jpjy

thingiverse

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Customizable mitre box for extrusions (e.g., OpenBeam) remix by shrek1977

..., openbeam) remix by shrek1977 thingiverse need 8 - m4x60, 4 - nuts m4, 4 - washer id 4mm od ~10mm. central bolts out of nuts.

thingiverse

free

VTech Go! Go! Y-track new Arm by XylenC4

...ingiverse new switching arm which requires an m3 (od 4mm) insert in the track. it uses an m3 screw to hold it down to the track.

thingiverse

free

Neato Botvac D80 Rollers with bearings and orings for quite operation on hard surfaces by MatGyver85

...eration on hard surfaces. i used a 4mm id 10mm od flanged bearing and an 10.8mm x id 15.6 od x 2.4mm thick oring(#111). it works.

thingiverse

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4mm Bowden Coupler by PhilBurg530

...r with a 2mm passthrough in the center for the filament. i printed it it without supports but you can add them if you'd like.

thingiverse

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Airtripper BSP Extruder (Main Body) for flexible plastic with 4mm hole by chrspcritter

...the top hole to fit the 4mm od ptfe tubing to get right next to the gear and bearing for best results in printing with ninjaflex.

thingiverse

free

Caddx Vista/Nebula Standoff Antenna Mount by SurfVulcan

...unting the stock vista/nebula antenna onto a 4mm od standoff. designed with a 20 degree misalignment/tilt for optimal reception.

thingiverse

free

PTFE filament guide for Maker Select Plus by billiamthesecond

...rse filament guide to hold 4mm od ptfe tubing. fits the top frame of the maker select plus (and probably other i3 plus clones).

thingiverse

free

Anycubic extruder modified for MK8 gear by karnhack

...uder modified for mk8 gearhttps://youtu.be/ko68sqldfqg list: screws of the original extruder 2 bearings: id 3mm od 8mm width 4mm

thingiverse

free

Neato Botvac D80 Beater Brush Bearing with real bearing by MatGyver85

...ing by matgyver85 thingiverse neato botvac d80 beater brush bearing with real bearing. uses (1) 4mm id x 10mm od flanged bearing

thingiverse

free

Cable Clamp for 6mm OD Cable HV03VV-F 3x0.75mm2 by gb262624

...r and a 4mm countersunk screw. should be printed upright. and be careful when tightening the screw so as not to damage the clamp.

thingiverse

free

Filament runout 2020 Remix by LittleCareBear

... tubing for my guides in the 4mm holes in my setup! this uses 6mm thread pipe fittings! the object will print threads for them!

thingiverse

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Pillow Block CTC Flashforge Replicator by kyuzumaki

...nice pulley block by garyacrowellsr designed for smaller 10 x 5 x 4 mm bearings. details: bearing- od 10mm, depth 4mm, shaft 5mm

thingiverse

free

Tubing Bulkhead adapter 4MM to 6MM by mercinary123

...smooth end. 5mm push-to-connect (ptc) fitting: https://amzn.to/2wpge9i ptfe hose for the ptc fitting: https://amzn.to/2kuxrk6

thingiverse

free

The DIY 3-way pneumatic valve for robotic projects by robolab19

...is one:https://www.advancedfluidsolutions.co.uk/4mm-od-x-25mm-id-metric-polyurethane-flexible-tubing-pu-air-pipe-black-3356-p.asp

thingiverse

free

6mm Bungee end plug with hole by nebbian

...f some bungee cord. this is sized to connect to 6mm od (4mm id) bungee tubing. the same size of surgical tubing would also work.

thingiverse

free

QIDI Tech PTFE Tube Cutting Jig by rssalerno

... ptfe tube cutting jig for qidi tech i and x-one2 printers. cuts standard 2mm id x 4mm od ptfe tube to the 32mm required length.

thingiverse

free

Duplicator 6 / Monoprice Enanced Extruder Cover by dot_bob

...ion on the extruder lever. one cover is used for a bowden tube with an od 4mm and the second for a bowden tube with an od of 5mm.

thingiverse

free

Snapmaker 2.0 Enclosure PTFE Bushing by brent113

...sthrough bushing and holds a short section of 4mm od ptfe tubing to reduce friction from the filament sharply changing direction.

thingiverse

free

Filament Guide

...use this guide and 4mm od ptfe tube! this mode is designed for the da vinci jr series, but...

thingiverse

free

PLX Luxor Mini 18650 battery spacer by CAULAIRDIS

... batteries from loosing connection in the plx luxor mini. 22mm od 19mm id, 65mm long. first print at .4mm, 100 mm/s with a raft.

thingiverse

free

MODIX PTFE Tube Cutting Jig by rssalerno

...g for modix big-60 and big-120 printers. cuts 2mm id x 4mm od ptfe tube to the exact 23mm length needed to assemble the extruder.

thingiverse

free

Bed auto level Z probe optic magnetic by Brian31

...yer: 0.2mm infill: 20% material: abs allen key: 2.5mm pfte tube: id 4mm od 6mm neodymium magnet: 5mm x 5mm x 1mm 4x or 5x5x4mm 1x

thingiverse

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Cube 3 Extruder MK3 by Kiza

...lamp is a slightly modified version of the cube 3 cartridge saver, designed by qube3bot.https://www.thingiverse.com/thing:2931422

thingiverse

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F450 arm for M3 inserts without leg by villamany

... really well printed with pla at 30% infill, lightweight and doesn't flex :) i use m3 inserts of about 4mm od and 4mm height.

thingiverse

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Tiny Flex Extruder Bowden Variant by tkramm

...r-pulley-drive-gear.html nema 17 motor 624 bearing 2x m3x12 1x m3x25 1x m4x10 4x m3 hex nut 4x m3x16 1x spring 7mm od 30mm length

thingiverse

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Amoeba Fidget Spinner by -DK0-

.../12 and remaining in balance. bearing: 624zz - 4mm id x 13mm od x 5mm h weights: 8mm od x 10mm h stainless steel dowel pins enjoy

thingiverse

free

parametric R/C Car Wheel by triffid_hunter

...e they are. stls have od=90mm and fit a 12mm hex with 4mm shaft and wall widths multiples of 0.5mm. see scad for other sizes.

thingiverse

free

Caddx Vista Standoff Antenna Mount by SurfVulcan

...stock antenna onto a typical 4mm od standoff. designed with a 20 degree lean/misalignment tilting the antenna rearward slightly.

thingiverse

free

Greg's wade v5 - PTFE mod by ThePhilStrongProject

...;s wade extruder v5 which has been modified to allow a ptfe tube to be used to guide the filament. use 4mm od / 2mm id ptfe tube.

thingiverse

free

Raise3D N2/2+ kit for mosaicmanufacturing palette by sylus

...by sylus thingiverse this kit is dedicated to connect encode to any extruder with od 4mm pneufit plug encoder...

thingiverse

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Geared Fluid Indicator by SurgeFF

...ndicator. made for 6mm od 4mm id tubing. glue shaft to housing. insert all gears then glue on cover. make sure gears spin freely.

thingiverse

free

Spinnaker boom bushing / bush / fitting by Deemoss

...ged (drilled) depending on number of perimeters used. three 4mm attachment holes provided but i suggest glueing in place instead.

thingiverse

free

OO/HO Early BR 2 Aspect Signal by calvinstreeting

...ly br aspect signal i used 4mm od plastic lolly pop tubes for main pole 57mm long and 10mm for upper post and 3mm red/green leds

thingiverse

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3DR Quadcopter Landing Gear (3DRobotics Quad) by nickroosen

...ere was nothing to choose from here. use 0.157" od (~4mm) x 4 carbon fiber rod for the shaft. mount with original hardware.

thingiverse

free

RepRap Prusa I3 Flexible Filament Mod by imginit

...2mm id teflon tube for the guide hole. you must slow down the printing speed by 60-70%. tested with polyflex 1.75mm filament

thingiverse

free

Rod adapter for Xnaron Printable Magnetic u-joint for Rostocks by jamesarm97

...les were for 3/8" rods. mine are about 5.5mm / .188" od from http://www.hobbytown.com/shop/carbon-fiber-tube-24-188-od/

thingiverse

free

PTFE Bowden Tube Cutting Tool 45mm by TomLyon

...cally designed for qidi tech printers. simply slide the end of the tube inside and use a razor blade to cut the tubes to length.

thingiverse

free

LED-Strip_Control_Mount by ReddeathMX

... three 4mm screw or glue. perfect fit, be careful when set the control inside the support. also add a hole for 12mm od rgb switch

thingiverse

free

Under-spool tabletop PTFE guide

...rsaljoint' design. also added one for 4mm. holes are for 3mm countersunk screws. the radius for the ptfe tubing hole is 50mm.

thingiverse

free

PTFE tube holder for 13mm tube by JimboRR

... cable tubes, this is the untested result. at time of writing both my printers are down so i can't print and test design yet.

thingiverse

free

Anet A8 Filament Guide by SwissGravityForce

... the mirror function in your slicer. you will need a small piece of ptfe tube (id 2mm, od 4mm) to run the filament thru smoothly.

thingiverse

free

Cable management - sort them out snapper 3DCR by Prenta

...mm id 22 height 34mm thick 4mm having problems with alot of wires so these do come handy. with one, two, three and four routes.

thingiverse

free

Bowden Extruder Push Fitting Shim by jasoa

... helps to prevent accidental disconnects. designed to work with 4mm tube od x 1/8" bspt male push-to-connect tube fittings.

thingiverse

free

Micro Air Engine by Thingynze

.../watch?v=1tchk7wkcci you need this hardware: 2x 7mm 2m screws with 3.5x1 mm heads 2x 4mm 2m screws a small tube with an od of 4mm

thingiverse

free

BIQU B1 USB cable and bowden tube clip by Empse

...he bowden tube. two types, one with straight outer wall and second with round outer walls. fits cables and tubes with 4mm/5mm od.

thingiverse

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Tusk cooling for Duet smart effector smaller fan by cdoe

...39;ve used brass tubes with 4mm od from ebay and used drilling jig from https://www.thingiverse.com/thing:2445660 to drill holes.

thingiverse

free

Anet A8 roller bearing filament guide by smallindine

... use 2x 624vv ((id)4mm x (od)13mm x (thickness)6mm) rollers and 2 x m4 screws. fixes to the original frame screw on the top left.

thingiverse

free

Airtripper Mount for Kossel Mini by MakerCoast

...he planetary geared box stepper and the 8mm shaft filament drive gear. all of these components can be found at www.makercoast.com

thingiverse

free

Tube holder & cleaner for thing: 508896 by jesi

...use with 4mm (od) ptfe tube. edit 130218: added mode for 6mm (od) tube, not...

thingiverse

free

E3D Hemera Model (Printable)

...printable. update: added versions with space for 3mm heatserts. 4mm od or 5mm od style. tverse is fsck'd right...

thingiverse

free

PTFE Tube Flange for dry box by mtdjr

...ing a near airtight seal. 4mm od ptfe tubing will fit snugly through center hole. add some silicone or hot glue for good measure.

thingiverse

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Half inch hose clamp

...i'm sure there was probably an easier way to mode ...

thingiverse

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Idler Arm with Bowden Input by elmerohueso

...removed the wording on top of the arm, and filled in where the the nut is so the u bearing can be screwed directly in to the arm.

thingiverse

free

PTFE Cutting Jig 13mm Length by GMagician

...:3062809 by adding cutter for upper part of prusa's extruder. use reference items to cut tube head then insert tube and cut.

thingiverse

free

Paramotor Throttle with cruise control.

...pst button for engine kill switch screws etc. if you fly paramotors you will figure it out. use your exsisting cables or buy new.

thingiverse

free

Parker Pen Case

...the joiner. it uses 4 magnets at 10 mm length and 4mm od. it fits a parker sonet mechanical pencil and a parker jotter ballpoint.

thingiverse

free

Raise 3D N2/N2+ filament guide tube bracket by R3Der

...2mm id/4mm od ptfe guide tubes. it allows removal of the front acrylic extruder cover without removal of the guide tube bracket.

thingiverse

free

Folgertech FT-5 filament guide by SteamLabs

.../20 extrusion. holes are for m5 socket head cap screws. works well with my other design: http://www.thingiverse.com/thing:1982717

thingiverse

free

Flanged Roller for Mini Kossel ( for use with 9mmx4mm bearing rollers with m3 inner diameter hole) by WingedPower

...ball bearings. this flanged is designed to fit a bearing on each side and fill up the 9-10mm space at the top of the mini kossel.

thingiverse

free

Wanhao Duplicator i3 Right Side Filament Guide (4mm PTFE) by BearsFan315

...ament getting snagged. if you want one for the left side, load it up in software (cura) and mirror/ flip it. slice, print, enjoy.

thingiverse

free

Low profile spool holder by PookY

..., 5mm id 5mm wide bearings, two m5 washers, 2 10mm m5 screws, a 5mm id spring and a m5 screw depending the length of your spring.

thingiverse

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Neutrik NL2MP speakON to binding post adapter box by cjdavies

... (4mm od) & m3 countersunk head bolts. printed in pla with 3 perimeters, would be better printed in pet-g for real world use.

thingiverse

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Filament Extrusion Measurement Rig by brunofporto

...e to put a piece or lenght of 4mm od ptfe tube and better clearance for the filament. also two versions with 100mm and 125mm gap!

thingiverse

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PTFE Tube holder for MMU Under Shelf Auto Rewinder

...tay on spool when rewinding and pulling. im using 3mm id/ 4mm od tubing. the hole is 4.1mm diameter and provides a nice snug fit.

thingiverse

free

Extended Filament Guide for Wanhao i3 plus by DartKrafts

...ore with the extruder. it is made to be used with 4 od x 2 id (4mm x 2mm) ptfe tubing. although it can be used without if needed.

thingiverse

free

Parametric hydro halo / watering ring by kmcallister5

... friction-fit stem for a 4mm od silicone tube. i included the openscad source so you can customize it to your heart's desire.

thingiverse

free

Qidi Tech 1 Filament Tube Support Guide Rear by leeph

...f you don't have the 4mm tube, the filament can just go straight up - i use the 4mm to guide a longer run to external spools.

thingiverse

free

Mirage Screen Door Repair Parts by WoodWorkerB

... weaken and break over time. a brass bushing is required to be inserted into the 'round' end. 6mm od x 4mm id x 8mm long.

thingiverse

free

Laser Cutter air nozzle for Chinese Laser Cutter by rekrapd

... through hole and 2 x m4 bolts hold the air nozzle in place through the factory holes - no drilling required (on my unit anyway).

thingiverse

free

IKEA LACK Table Filament Tube by Jgunde

...originally didn't have the ptfe tube but there was to much friction. definitely add the ptfe tube! this fits 1.75mm filament.

thingiverse

free

MK3 Sensor Cover with threading by OliK

... a 2mm id 4mm od ptfe tube. original stl from prusa github: https://github.com/prusa3d/original-prusa-i3/tree/mk3/printed-parts

thingiverse

free

Simple Spool Holder by AmericanEngineering

... roll smoothly. stop by my profile to check out some of my other designs :)https://www.thingiverse.com/circuitconnections/designs

thingiverse

free

Prusa i3 Mk2 Filament Guide by Megabound

...ation/noise. takes 4mm od 2mm id ptfe tubing. sits high so the head can get full travel left and right while at maximum z-height.

thingiverse

free

Flashforge Dreamer 2nd Gen Teflon Tube Cutting Jig by FPVRacingParts

...10 for 1 meter) and cut it to the perfect lengths by using this jig and a razor blade. better than $2.25 for 30mm plus shipping!!

thingiverse

free

Minimalistic Filamnet Roller by poor_red_neck

...ller will move back and forth to accommodate different sized spools while being "one piece" but for now this will do :)

thingiverse

free

Ball Bearing idler Pulley for 6mm belt by geoff_cohen

...- proven quality - high rpm speeds" and select mode: 4x8x3mm bearing, with standard rubber seals. there is a...

thingiverse

free

Oruga SawersBOT by derive88

...thingiverse transforma tu sawersbot en un robot oruga para pode darle mayor libertad de movimiento en areas mas agresivas!...

thingiverse

free

Case for STM32 Nucleo-64 by Rogerio_Rodrigues

...00pcs-m3-x-5mm-x-od-4mm-injection-molding-brass-knurled-thread-inserts-nuts/32430148405.html?spm=a2g0s.9042311.0.0.2742b90aexgyyt