=====Upgrades====
https://www.youtube.com/watch?v=h-HuCLmLBug
====Installation carte Relai pour OctoPrint====
notice de configuration: http://www.thingiverse.com/thing:1428478
il faut placer les scripts dans /usr/local/bin
-rwxr-xr-x 1 pi pi 50 Jan 3 2017 light_off.sh
-rwxr-xr-x 1 pi pi 50 Jan 3 2017 light_on.sh
-rwxr-xr-x 1 pi pi 50 Jan 3 2017 printer_off.sh
-rwxr-xr-x 1 pi pi 50 Jan 3 2017 printer_on.sh
en 2018, remplacement de !/bin/bash par !/bin/sh sinon segfault
====Mosfet et switch====
https://www.youtube.com/watch?v=Pauq99Wwhp8
www.buyincoins.com/item/80983.html?sc_eh=5f3d359faf6dae1d1&sc_llid=19326&sc_lid=49234888&sc_src=email_1616400&sc_uid=QdcaK1OUJ4#.WHp_yWeIdtj
====carte mega+ ramp===
http://www.gearbest.com/3d-printer-parts/pp_219235.html
====Moteurs pas à pas et pièces extrudeur====
http://www.gearbest.com/3d-printer-parts/pp_540282.html
http://www.gearbest.com/3d-printer-parts/pp_400612.html
http://www.gearbest.com/3d-printer-parts/pp_540280.html
https://fr.aliexpress.com/item/MK8-Assembled-Extruder-Hot-End-kit-for-Prusa-i3-3D-Printer-1-75mm-0-4mm-Nozzle/32760290222.html?spm=2114.11010108.888.1.xuFswE&scm=1007.12524.66420.0&request_id=20170118051657629-1840882922
Extrudeur E3DV6: http://e3d-online.com/E3D-v6
tuble téflon: http://www.banggood.com/1M-PTFE-Teflon-Bowden-Tube-For-Reprap-3D-Printer-1_75mm-Filament-p-1089552.html?rmmds=search
====Filtre pour controleur moteur pas à pas====
https://www.youtube.com/watch?v=qYI9XlADed8
https://www.thingiverse.com/thing:1997411
https://www.thingiverse.com/thing:1998222
=====Prusa i3 pas chère=====
====Anet A8====
forum facebook: https://www.facebook.com/groups/1068531466501015/
commandée: http://www.gearbest.com/3d-printers-3d-printer-kits/pp_337314.html
http://www.gearbest.com/3d-printers-3d-printer-kits/pp_343643.html?vip=72058¤cy=EUR
Firmware: https://www.3dprintersbay.com/anet-a8-a6-firmwares-latest
la mienne:
{{https://bvdp.inetdoc.net/files/3D/P70110-201238-resize.jpg}}
schéma de découpe des pièces de structure: http://www.thingiverse.com/thing:1614693/#files
pla: http://www.gearbest.com/3d-printer-supplies/pp_367906.html
zprobe: http://www.gearbest.com/3d-printer-parts/pp_591321.html
montage zprobe: https://www.youtube.com/watch?v=uMQcnMVPcX4
Anet A8 3D printer Review. all you need to know: https://www.youtube.com/watch?v=i5cEpL19ses
discussions: https://fr-fr.facebook.com/groups/1068531466501015/
montage, explications et upgrade: http://chezcyril.over-blog.com/2015/11/debuter-dans-l-impression-3d-pour-200-avec-prusa-i3.html
http://chezcyril.over-blog.com/2015/12/astuces-de-fonctionnement-de-l-imprimante-3d-prusa-i3-m-505.html
Vidéo de montage: https://www.youtube.com/watch?v=XK9fhBYpc6A
Skynet3D v1.1 alfa (marlin) firmware Anet A8 autobed leveling: https://www.youtube.com/watch?v=1YNI6T4lJ48
How to set up the Anet A8 3D Printer Auto Bed Leveling Sensor with Skynet Firmware : https://www.youtube.com/watch?v=tTl09r-E0wE
ventilo radial: http://www.banggood.com/fr/3D-Printer-12V-DC-50mm-Blow-Radial-Cooling-Fan-p-980653.html?rmmds=detail-left-hotproducts
===Firmware Repetier===
d'après: http://forums.reprap.org/read.php?406,641315
roginvs
Re: Firmware update Issues for Hesine Printer, Anet A8-B
June 11, 2016 01:53PM Registered: 7 months ago
Posts: 3
Repetier for Zonestar P802M works perfect for my Anet A8-B (https://github.com/repetier/Repetier-Firmware/tree/master/boards/Zonestar%20P802M)
===Firmware Skynet3D===
Pour avoir l'auto bed level: https://github.com/pedromreis/Skynet3d
https://www.facebook.com/skynet3ddevelopment/
===Explication auto leveling pour firmware marlin===
http://www.instructables.com/id/Enable-Auto-Leveling-for-your-3D-Printer-Marlin-Fi/?ALLSTEPS
====Grenntech====
http://www.ebay.fr/rpp/deals/6002102711_Imprimante_3D_Geeetech_Prusa_I3_Pro_B_
http://www.ebay.fr/itm/Duty-free-Geeetech-Acrylic-Reprap-Prusa-I3-Pro-B-3D-imprimante-MK8-free-shipping-/231911254318?_trkparms=5373%3A0%7C5374%3AFeatured
=====Z probe=====
====Pour ANET A8====
super page explicative: https://3dprint.wiki/reprap/anet/a8/improvement/autobedleveling
vidéo exemple: https://www.youtube.com/watch?v=EcGFLwj0pnA
modèle 3D pour tenir la sonde: https://www.thingiverse.com/thing:1911146
====Actionneur avec micro controleur intégré====
https://www.geeetech.com/3dtouch-auto-leveling-sensor-for-3d-printer-p-1010.html
http://www.ebay.fr/itm/Geeetech-3DTouch-Auto-bed-Level-Sensor-for-Prusa-Delta-To-be-Premium-3D-Printer-/232063839340?hash=item3608152c6c:g:D9kAAOSwMgdX17yo
http://www.geeetech.com/wiki/index.php/3DTouch_Auto_Leveling_Sensor
====Capteur inductif====
http://imagesia.com/lj18a3-8-z-bx-inductive-proximity-sensor_ydh2
https://www.google.fr/search?client=ubuntu&channel=fs&q=lj18A3-8-Z%2FBX&ie=utf-8&oe=utf-8&gfe_rd=cr&ei=oRidV-OlN9bAaMuTgfgN
=====Configuration Slicer=====
http://manual.slic3r.org/simple-mode/simple-mode
=====Impression couleur=====
http://hackaday.com/2015/11/18/diamond-hotend-opens-the-color-gamut-for-3d-printing/
=====Supers modèles openscad =====
librairie pour description relative: http://www.thingiverse.com/thing:349943
librairie pour faire des boites avec faces avants paramétrables: http://www.thingiverse.com/thing:1264391
librairie pour faire des vis: http://www.thingiverse.com/thing:8793
tirés de http://forum.labsud.org/topic91.html :
Ressorts: http://www.thingiverse.com/thing:21234
http://www.thingiverse.com/thing:1690305
Roulement à bille sans bille: http://www.thingiverse.com/thing:53451
polymer slides pro IGUS: https://www.youtube.com/watch?v=VYW1p3T9tKo
Boulons et Ecrous: http://www.thingiverse.com/make:15450
Supports Ecrous: http://www.thingiverse.com/apps/customizer/run?thing_id=70494
Poulies de courroies: http://www.thingiverse.com/apps/customizer/run?thing_id=16627
Cable Chain paramétrique: http://www.thingiverse.com/thing:1078216
Engrenages: http://www.thingiverse.com/apps/customizer/run?thing_id=50223
http://www.thingiverse.com/apps/customizer/run?thing_id=54395
Bracelets: http://www.thingiverse.com/apps/customizer/run?thing_id=57810
http://www.thingiverse.com/apps/customizer/run?thing_id=45950
http://www.thingiverse.com/apps/customizer/run?thing_id=53197
Vases Spirales: http://www.thingiverse.com/apps/customizer/run?thing_id=53916
Pièce de test tordue de chez tordue ! (voui ce n'est pô OpenScad): http://www.thingiverse.com/thing:64549
La liste de Jérémie FRANCOIS: http://www.thingiverse.com/MoonCactus/collections/libraries-amp-soft
planeur: http://www.thingiverse.com/thing:1115840
http://3dprintingforbeginners.com/how-to-make-diy-filament-for-your-3d-printer/
====Formes mathématiques====
http://www.georgehart.com/rp/rp.html
http://www.3dprintmath.com/chapters/3-Four-dimensional-space
http://www.3dprintmath.com/
www.mathcurve.com/fractals/hilbert/hilbert.shtml
http://www.yeggi.com/q/hilbert+curve/?s=tt
=====produit de finition et pellets=====
http://www.filabot.com/collections/components/products/xtc-3d-high-performance-3d-print-coating
http://www.filabot.com/collections/components
http://www.filabot.com/collections/pellets
=====Imprimante LAAS=====
https://wiki.laas.fr/robots/3D%20printer
https://www.lulzbot.com/store/printers/lulzbot-taz-5
=====Reprap=====
http://www.leboncoin.fr/informatique/860459971.htm?ca=16_s
=====Étalonnage=====
Flowrate Calibration Method: https://www.thingiverse.com/thing:3397997
=====Impression résine avec vidéoprojecteur DLP=====
forum.allinbox.com/aspectgeek/Montages-Mecaniques-Electroniques/3D-print/real-3dprint-v3-sujet_127_1.htm
http://forum.allinbox.com/aspectgeek/Montages-Mecaniques-Electroniques/3D-print/real-3dprint-v3-sujet_127_2.htm
http://www.instructables.com/id/RooBee-One-SLA-DLP-Aluminum-Frame-3D-Printer/
=====Impression résine avec écran téléphone=====
https://www.kickstarter.com/projects/olo3d/olo-the-first-ever-smartphone-3d-printer
=====Fonderie aluminium sur moule perdu en PLA=====
coulage aluminium: https://www.youtube.com/watch?v=iKgA6xGDu_c
=====Récupération plastique pour fabriquer du filament=====
http://www.semageek.com/diy-fabriquer-un-extruder-de-filament/
http://3dprinting.forumactif.org/t132-que-faire-des-rates-pla-et-abs-recyclage
avec perceuse manuelle: http://www.thingiverse.com/thing:17454
extrudeuse à imprimer: http://www.thingiverse.com/thing:152380
kit: https://www.filastruder.com/products/filastruder-kit?variant=338125655
=====Soudure par friction=====
https://www.youtube.com/watch?v=Cj9TMmUldhc
=====Lissage=====
====Vapeurs d'acétone à froid====
http://www.references3d.com/lissage-acetone-a-froid/#.WHEjIGeIdth
https://www.youtube.com/watch?v=6xFUNFG-UKE
====Epoxy====
https://www.youtube.com/watch?v=g0TGL6Cb2KY
achat: https://www.amazon.com/XTC-3D-High-Performance-Print-Coating/dp/B00PFXK4JY/ref=as_li_ss_tl?ie=UTF8&keywords=xtc%203d&qid=1464731817&ref_=sr_1_1&sr=8-1&linkCode=sl1&tag=myinstrucacco-20&linkId=6af8c4ea984173fb46cca47c95d462e9
=====Cout d'impression=====
===en 3mm===
diamètre=3mm, rayon=0.15cm
volume d'un mètre linéaire= 7cm3
densité du pla=1.25g/cm3 ( https://www.filimprimante3d.fr/content/12-combien-d-objets-imprimer-avec-une-bobine-de-fil-pla-ou-abs )
masse d'un mètre linéaire= 8.8grammes
une bobine de 1kg fait 113m, et coute 18 euros donc 0.16Euros /m
===en 1.75mm===
diamètre=1.75mm, rayon=0.0875cm
volume d'un mètre linéaire= 2.4cm3
densité du pla=1.25g/cm3 ( https://www.filimprimante3d.fr/content/12-combien-d-objets-imprimer-avec-une-bobine-de-fil-pla-ou-abs )
masse d'un mètre linéaire= 3grammes
une bobine de 1kg fait 333m, et coute 18 euros donc 0.05Euros /m
====Comparaison pour différents types d'infill===
http://www.thingiverse.com/thing:1212726
=====Scannerisation 3D=====
http://www.instructables.com/id/Build-a-DIY-Desktop-3d-Scanner-With-Infinite-Resol/?ALLSTEPS
http://www.instructables.com/id/3d-Scan-Anything-Using-Just-a-Camera/?ALLSTEPS
=====Impression 3D résine=====
Vidéo sur la plus rapide: https://www.youtube.com/watch?v=uqYEOyBmyLM
=====Z probe optique=====
http://www.escher3d.com/pages/order/products/product1.php
=====Insonorisation=====
http://talk.smartfri.odns.fr/index.php?topic=437.0
https://www.reddit.com/r/3Dprinting/comments/2zummd/whats_the_best_way_to_deal_with_3d_printer_noise/
http://www.igus.fr/wpck/7188/DryLin__R__RJMP
http://velocirepraptor.com/construire-une-boite-pour-proteger-son-imprimante/
=====Capteur de filament=====
http://www.thingiverse.com/thing:285504
http://www.thingiverse.com/thing:155899
http://www.ebay.com/itm/112050658503?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
http://plugins.octoprint.org/plugins/filament_sensor/
http://plugins.octoprint.org/plugins/actiontrigger/
mesure de vitesse du fil: http://www.thingiverse.com/thing:1904929
avec mesure de température par sonde DS18B20:
https://github.com/vitormhenrique/OctoPrint-Enclosure
http://www.framboise314.fr/mesure-de-temperature-1-wire-ds18b20-avec-le-raspberry-pi/
https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=61922&p=460723
=====Fumées=====
https://www.lesimprimantes3d.fr/forum/topic/1628-filtrer-lair-dune-imprimante/
http://www.globalspec.com/learnmore/manufacturing_process_equipment/filtration_separation_products/hepa_filters_ulpa_filters
http://www.3dprintfilemarket.com/140629194058.html
http://www.3dprintfilemarket.com/140508000937.html
https://www.amazon.com/gp/product/B000QX51LY/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B000QX51LY&linkCode=as2&tag=dallasantiqueori&linkId=W5YXTQ7GHHVZVNZN
===BuzzBox===
http://www.lesnumeriques.com/imprimante-3d/buzzbox-coffret-pour-imprimantes-3d-n37889.html
https://www.kickstarter.com/projects/729827674/buzzbox-3d-printer-enclosure?lang=fr
=====Solidité des pièces=====
Benchmark: http://3dprintingforbeginners.com/infill-strength/
Intérêt d'un boitier sur la solidité des pièces: https://www.youtube.com/watch?v=VYW1p3T9tKo
=====Viewer GCode en ligne=====
http://jherrm.com/gcode-viewer/
=====Réglages=====
Infill et recouvrement: https://ultimaker.com/en/resources/20416-infill
Problèmes et solutions: http://reprap.org/wiki/Print_Troubleshooting_Pictorial_Guide
problèmes d'extrusion: https://www.lesimprimantes3d.fr/forum/topic/2276-vous-avez-un-probl%C3%A8me-dextrusion-peut-%C3%AAtre-la-solutionpost-en-cours/
http://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide
===Petite liste===
Soo... This will be a long post, but let me share it, and hopefully save some time to the other newbies :)
After the usual print / tinkering / print / tinkering I noticed that I started to get these horizontal "bands" in the prints - sometimes the layers were displaced, sometimes they were just wider/narrower on all 4 sides.
And because I like to do systematic testing, I tried everything (well... almost everything - as it turned out):
- Reduced the speeds (to 30mm/s outer, 40mm inner, etc.) - usually suggested solution for all issues ;) - Didn't get better. A bit worse actually :)
- Increased the speeds (to 60-100mm/s)
- Tried different layer height (0.2, 0.3) - the issue was not so prominent on 0.3, but it was still there
- different values and combinations for some print options (acceleration - 100-400, jerk 5-10, infill 0-20). Printing with infill 20% seems to have helped a bit.
- Tried with tighter belts (to the point in which I had to finally print the rear frame brace)
- Tried with looser belts (to the point where I got ripples all over the print)
- Cleaned the extruder gear (it was clean anyway)
- Oiled all rods
- Removed the Y-Axis cable chain mod (I thought it might be putting some resistance to the movement)
- Temporarily removed the "overhead spool holder" that some hate so much (made ABSOLUTELY no difference)
- Measured all axes, everything is "square". On a side note, the pulley on my X axis motor is a liiittle bit excentric from the start (just the pulley, not the motor axis). I ordered a few replacements.
- Printed in different (warmer) room. The room in which the printer usually runs is not heated and it's 14C there now :)
- printed on different, a lot more rigid table - absolutely no difference.
- Printed on different temps (PLA): 185-220
- Tried with my old roll of filament, with which I had printed the same test cubes, and they were perfect back then. Not anymore.
- Tried slicing with Simplify3D using the settings from the files section. Oh the horror...
NOTHING REALLY HELPED.
TLDR;
You know what helped? Changing the wall thickness to 1.2 instead of 0.8. And now the cube is (almost) perfect - in reality it looks even better than the photo.
FFFFUUUUUU
I know that NOW everyone will tell me that the error was obvious, but the other day, when I initially asked about the issue, everyone was sooo quiet... ;)
PS: Ignore the bad first layer on the photo. It's not it's fault - small leveling errors correct themselves in the upper layers;)
=====Z probe =====
http://www.thingiverse.com/thing:2091529
explication de configuration via skynet
=====Z probe piezo=====
http://www.thingiverse.com/thing:2033848
https://www.youtube.com/watch?v=mbUOuzCvzq0
http://www.thingiverse.com/thing:707392
http://www.thingiverse.com/thing:1399512
discussion: http://forums.reprap.org/read.php?1,635075,page=3
schéma électrique: http://forums.reprap.org/file.php?1,file=83738
principe: http://eskimon.fr/1583-arduino-502-differents-types-de-mesures
https://en.wikipedia.org/wiki/Piezoelectric_sensor
====Système Piezo====
https://www.youtube.com/watch?v=mbUOuzCvzq0
http://www.spainlabs.com/foros/tema-NOVEDAD-SENSOR-PARA-AUTONIVELADO-DE-TIPO-RESISTIVO
https://groups.google.com/forum/#!topic/asrob-uc3m-impresoras-3d/YyqPhjIc-pE%5B1-25%5D
https://groups.google.com/forum/#!msg/asrob-uc3m-impresoras-3d/YyqPhjIc-pE/CFPuSU4_CwAJ
https://docs.google.com/viewer?a=v&pid=forums&srcid=MTEwOTQ1MzA1MzA4MDUwMjA2MDEBMDk4NTU3NTk0MzY1MjU5NzcyMTABT1NXMnIweEhDd0FKATAuMgEBdjI
https://oshpark.com/shared_projects/jgprH7hw
https://oshpark.com/profiles/Moriquendi
http://forums.reprap.org/read.php?1,635075,737155,page=4
forums.reprap.org/read.php?1,635075,page=3
forums.reprap.org/file.php?1,file=83738
===Réalisation perso avec digispark===
https://digistump.com/wiki/digispark?redirect=1
https://digistump.com/board/index.php?topic=2250.0
https://digistump.com/wiki/digispark/tutorials/basics
http://www.instructables.com/id/Digispark-DIY-The-smallest-USB-Arduino/step4/Digispark-schematic/
doc attiny 85: http://www.atmel.com/images/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf
ADC: https://www.marcelpost.com/wiki/index.php/ATtiny85_ADC , http://www.atmel.com/Images/doc8352.pdf
https://www.arduino.cc/en/Tutorial/Knock
http://www.learningaboutelectronics.com/Articles/Piezo-knock-sensor-circuit.php
https://digistump.com/board/index.php?topic=142.0
=====Comparaison Slicer=====
Slicer/Cura/Simplify3D/Craftware
https://www.youtube.com/watch?v=USA29CuYOvk
https://www.youtube.com/watch?v=GHnbkRm9IGg
====Simplify 3D====
Impression d'une portion d'un objet seulement: https://forum.simplify3d.com/viewtopic.php?f=23&t=3699
Réglages de paramètres différents pour différentes couches: https://www.simplify3d.com/support/articles/different-settings-for-different-regions-of-a-model/
Configuration avec octoprint: http://community.robo3d.com/index.php?threads/simplify3d-octoprint-gcode-direct-to-octoprint-setup.8217/
=====Super idées=====
outils pour finition, mélangeur de fils, seringue à résine, scanner 3D et plateau souple amovible:
https://www.youtube.com/watch?v=_EFr374glGU
https://www.kickstarter.com/projects/3dfacture/fixer-a-professional-3d-print-finish-repair-and-gl?lang=fr
http://www.fleks3d.com/#printremoval
=====Nettoyage du plateau pour résoudre les problèmes d'adhésion=====
https://www.youtube.com/watch?v=ShFaJ027pFs
=====Film pour adhésion sur la plateau chauffant====
Buildtak: http://www.ebay.fr/itm/like/252711027725?lpid=97&chn=ps
https://www.filimprimante3d.fr/plateau-chauffant/639-buildtak-film-d-adherence-tous-materiaux.html?codesf=5513095969&gclid=CjwKEAiAq8bEBRDuuOuyspf5oyMSJAAcsEyWM8UZJ-nBb5NrpcAj28jJqemMPiAeumpnNYiwM9QdjhoCtnzw_wcB
=====Douilles Drylin tout plastique pour remplacer les roulements linéaires=====
possibilité de commande d'échantillons.
http://www.igus.fr/wpck/2295/drylin_r_rjum_03
http://www.igus.fr/wpck/2407/DryLin_R_Lineargleitlager
http://www.igus.fr/wpck/1848/DryLin_Baureihen
=====Extrudeur à argile=====
http://www.thingiverse.com/thing:2102960
=====OpenScad====
====Generation de plusieurs .stl à partir d'un .scad====
https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_OpenSCAD_in_a_command_line_environment
===Pour faire plusieurs STL à partir d'un SCAD===
#!/bin/sh
mkdir -p stl
openscad -D printerpart=1 -o 'stl/top.stl' support_akka_v2.scad
openscad -D printerpart=2 -o 'stl/bottm.stl' support_akka_v2.scad
printerpart=0;//default value for the constant printerpart, it can be changed through command line using -D
////use compile.sh to generate the stl files in stl/ subdirectory
type=printerpart; //assign the constant value to a variable to be able to test it, even if the constant hasn't been defined in command line
//pour visualisation de l'assemblage
if (type==0)
{
supportsuperieur();
supportinferieur();
}
//pour impression via script compile.sh
if (type==1)
rotate ([180,0,0]) supportsuperieur();
if (type==2)
translate([80,0,17]) supportinferieur();
===Pour personnaliser des objets===
Ceci permet de générer un texte depuis un script bash et de compiler le scad vers différents stl avec les marquages.
#!/bin/bash
#bash pour avoir le printf
mkdir -p stl
#for i in $(seq -w 1 3) do
for i in {1..6}; do
iaff=$(printf "%02d" $i)
echo $iaff
lettre='A'
#openscad -D printerpart="str(\"A01\")" -o 'stl/base_arduino_parametrable1.stl' base_arduino_parametrable.scad
openscad -D printerpart="str(\"$lettre$iaff\")" -o 'stl/base_arduino_parametrable'$lettre$iaff'.stl' base_arduino_parametrable.scad
done
printerpart=0;//default value for the constant printerpart, it can be changed through command line using -D
//https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Using_OpenSCAD_in_a_command_line_environment
//use compile.sh to generate the stl files in stl/ subdirectory
type=printerpart; //assign the constant value to a variable to be able to test it, even if the constant hasn't been defined in command line
//pour visualisation de l'assemblage
translate([-22.5, -30, -2]){
difference(){
cube([16, 12, 2], center = true);
echo("Je suis passé par ici");
echo(type);
if (type!=0){
translate([7, -1, 0]) scale(0.5,0.5,0.5) rotate(180,[0,1,0])
linear_extrude(height = 3.5) { #text( type, font = "Liberation Sans");
}
}
}
=====Filament conducteur=====
https://filament2print.com/fr/graphene/653-filament-conducteur-en-graphene.html
https://filament2print.com/fr/pla-speciaux/654-pla-conducteur-proto-pasta.html
exemple de carte arduino imprimiée: https://www.thingiverse.com/thing:3431218