RailCore2 BOM (Deprecated, ZL recommended)
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This BOM is for the "standard" RailCore II - consider it deprecated. The 250 ZL or 300ZL is recommended. Links may be out of date.
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Item NamePriceQtyTotalLinkNotes
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FRAME COMPONENTS
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HDPE Side Panels$1001$100.00
https://www.kraegar.com/product-page/railcore-ii-side-panel-set-standard-build-250mm-3
DXFs available from the Fusion 360 CAD Design: http://a360.co/2z30VXH
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15x15x (Misumi HFS3-1515-390 )$2.022$4.04https://us.misumi-ec.com/Misumi pre-cut (2 for the standard build, 3 for the ZL Build)
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15x15x (Misumi HFS3-1515-370 )$1.924$7.68https://us.misumi-ec.com/Misumi pre-cut (Horizontal Y)
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15x15x (Misumi HFS3-1515-360 )$1.874$7.48https://us.misumi-ec.com/Misumi pre-cut (Corner Uprights)
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15x15x (Misumi HFS3-1515-344 )$1.782$3.56https://us.misumi-ec.com/Misumi pre-cut (Bed Carriers, not needed in ZL Build)
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15x15x (Misumi HFS3-1515-400 )$2.084$8.32https://us.misumi-ec.com/Misumi pre-cut (Horizontal X)
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15x15 Corners (8)$16.251$16.25http://a.co/0MakkPQ4 Spare corners after ordering$147.33
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MOTION COMPONENTS
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400mm TR8 leadscrew + brass nut$10.992$21.98http://a.co/aUdxGg8TR8x2-TR8x8 (choose resolution)
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optional TR8*8 anti-backlash nut$7.982$15.96http://a.co/htBVVS2****TR8x8 linked; optional backlash nut, but recommended
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30 tooth 8mm bore GT2 pulley$3.992$7.98
https://www.smw3d.com/gt-pulleys-gt2-and-gt3/
For syncing the Z leadscrews
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32 tooth 8mm bore GT2 pulley$3.991$3.99
https://www.smw3d.com/gt-pulleys-gt2-and-gt3/
For the top of the Z leadscrew, couples to the Z stepper
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8mm steel collar$7.811$7.81http://a.co/iex4QZv2 Required (4 spares)
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350mm MGN12H + carriage$34.995$174.95https://www.smw3d.com/mgn-rail-block/MGN 12H-L350MM
Alternate Rail Source: http://www.ebay.com/itm/MGN12H-Linear-Sliding-Guide-Block-250-300-350-400-450-500-550mm-CNC-3D-Printer-/152236837331
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16 tooth 5mm bore GT2 Pulley$3.993$11.97
https://www.smw3d.com/gt-pulleys-gt2-and-gt3/
For X/Y/Z steppers (Only 2 needed for the ZL Build)
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Gt2 smooth idlers (3) 5mm ID$7.991$7.99http://a.co/bDcYV7M1 packs of 5; 2 spares
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Gt2 20 tooth idlers (7) 5mm ID$8.992$17.98http://a.co/2oeGToLfor corexy motion gear. 2 packs of 5, 3 spares
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5mm I.D. x 6mm O.D. x 0.40mm Shim$13.241$13.24http://a.co/fElunfLFor shimming the bearings - not required, but recommended
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608zz bearings (4)$0.994$3.96
https://www.smw3d.com/shielded-bearings-for-rotary-motion/
For Z axis
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GT2 Belt (5m)$9.171$9.17http://a.co/7yHHNY4X/Y Motion belts
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200mm closed loop Gt2 6mm belt$9.881$9.88http://a.co/eQhOFiwFor driving the Z axis (pkg of 10, nine spare)
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860mm closed loop GT2 6mm belt$14.881$14.88http://a.co/8jbkdSCfor syncing the Z axis (pkg of 2, one spare)$321.74
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HARDWARE
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Threaded Inserts M3 x 0.5$7.461$7.46http://a.co/aEc8L87Brass inserts, tons of spares
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Threaded Inserts M5 x 0.8$8.751$8.75http://a.co/5UQBOSYBrass inserts, tons of spares
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M3 x 6mm button head bolts$0.0530$1.50
http://www.boltdepot.com:80/AddToCart.aspx?qty7218=30
May be needed for thinner rails. Includes spares
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M3 x 8mm Button Head Bolts (100)$3.101$3.10
http://www.boltdepot.com:80/AddToCart.aspx?qty7219=100
For the corner cubes, and for mounting the steppers (bag of 100, includes spares)
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M3 x 10mm button head bolts (100)$3.251$3.25
http://www.boltdepot.com:80/AddToCart.aspx?qty7220=100
For attaching motor mounts to the frame (need 56, cheaper by the bag)
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M3 x 12mm button head bolts$0.0710$0.70
http://www.boltdepot.com:80/AddToCart.aspx?qty7221=10
For securing the Y rail (2) + extras (they're handy to have a few around)
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M3 x 16mm button head bolts$0.0818$1.44
http://www.boltdepot.com:80/AddToCart.aspx?qty7222=18
For attaching the leadscrews, securing the Y rail
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M3 x 20mm button head bolts$0.084$0.32
http://www.boltdepot.com:80/AddToCart.aspx?qty7223=4
For attaching your controller
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M3 x 30 button head bolts$0.124$0.48
http://www.boltdepot.com:80/AddToCart.aspx?qty15292=4
For attaching the hotend & lower tensioner
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M3 x 10mm Hex head Bolts (100)$5.651$5.65
http://www.boltdepot.com:80/AddToCart.aspx?qty11100=100
For bolting the sides & bottom to the rails (Need 74, cheaper to order 100)
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M3 x 16mm hex bolts (100)$7.701$7.70
http://www.boltdepot.com:80/AddToCart.aspx?qty11102=100
For attaching the z-axis (can order 54, 46 spares for $1 more)
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M3 x 35mm socket flat head bolts$0.093$0.27
http://www.boltdepot.com:80/AddToCart.aspx?qty17990=3
For attaching the bed to the carrier
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M3 x 25 cap head bolts0.092$0.18
http://www.boltdepot.com:80/AddToCart.aspx?qty6384=2
For securing the upper tensioner
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3mm x 45mm socket cap bolts$0.184$0.72
http://www.boltdepot.com:80/AddToCart.aspx?qty6388=4
For the belt retainer clips
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3mm x 0.5 nuts (100)$1.802$3.60
http://www.boltdepot.com:80/AddToCart.aspx?qty4773=200
For bolting the rails to the frame, motor mounts to the frame (cheaper to order 100 and have spares)
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3mm lock nuts (100)$3.192$6.38
http://www.boltdepot.com:80/AddToCart.aspx?qty4792=200
For bolting the sides & bottom to the rails (cheaper to order by boxes of 100)
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M3 washers (100)$1.101$1.10
http://www.boltdepot.com:80/AddToCart.aspx?qty4513=100
Buy lots of washers, they're cheaper in boxes of 100
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M3 Fender washers0.059$0.45
http://www.boltdepot.com:80/AddToCart.aspx?qty7319=9
For the bed & PSU
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M5 x 25mm Cap Head bolts0.161$0.16
http://www.boltdepot.com:80/AddToCart.aspx?qty6411=1
For the Upper Tensioner
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M5x50mm Cap Head Screws$0.407$2.80
http://www.boltdepot.com:80/AddToCart.aspx?qty6453=7
Be sure to order the socket cap head, these are partially threaded for the idlers
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M5 steel nylock nuts$0.078$0.56
http://www.boltdepot.com:80/AddToCart.aspx?qty4794=8
For the M5 bolts on the idlers - be sure to get nylon lock nuts
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M5 washers$0.0517$0.85
http://www.boltdepot.com:80/AddToCart.aspx?qty4515=17
For between the idlers
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M2 x 12mm bolts$0.136$0.78
http://www.boltdepot.com:80/AddToCart.aspx?qty6366=6
For the endstop switches & mini IR probe
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M2 Nuts$0.056$0.30
http://www.boltdepot.com:80/AddToCart.aspx?qty7362=6
For the endstop switches & mini IR probe$58.50
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ELECTRONICS
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24v 500w PSU$34.951$34.95http://a.co/4Twjl4xABI 500W Weatherproof LED PSU
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Power Switch$4.991$4.99
https://www.smw3d.com/10a-250v-inlet-module-plug-power-socket/
10A 250v Power switch and socket, order a fuse to match.
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0.9 degree NEMA 17$23.953$71.85http://a.co/5qBDalvXYZ steppers (A decent torque 1.8 can be substitued for the Z)
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Mini IR probe$24.991$24.99
https://www.filastruder.com/collections/electronics/products/mini-differential-ir-height-sensor
Z-Probe - bltouch also supported
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50mm Layer fan$7.371$7.37http://a.co/0J0F8JC
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Bed heater 240mm x 240mm silicone pad
$49.801$49.80http://www.ebay.com/itm/281442503025
Optionally you can use a 120v version with an SSR, but the recommended PSU can power this directly
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Extruder Stepper$14.251$14.25
https://www.omc-stepperonline.com/hybrid-stepper-motor/nema-17-bipolar-09deg-36ncm-51ozin-09a-54v-42x42x40mm-4-wires-17hm15-0904s.html?mfp=17-step-angle%5B0.9%5D%2C16-bipolar-unipolar%5BBipolar%5D
E3D alternative: https://www.filastruder.com/collections/electronics/products/nema17-stepper-motor
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Duet Wifi$169.991$169.99
https://www.filastruder.com/collections/electronics/products/duet-wifi
Can substitute your controller of choice, 32bit recommended with 0.9 steppers
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Bed Thermistor$0.991$0.99https://www.smw3d.com/thermistors/Select 100K 3950 with lead thermistor
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Endstop switches$1.532$3.06
https://www.mouser.com/ProductDetail/Omron-Electronics/D2F-01F?qs=0w99tykdtPLhoVh2lktm%252bQ%3D%3D
OMRON D2F-01F Micro Switch Microswitch SPDT Subminiature
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40mm Electronics Enclosure Fans2$0.00
Optional, any 24v, 40mm fan is fine. I haven't installed one yet and have not had heat issues
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4 conductor wire, 20m$10.961$10.96http://a.co/3uG1OMjAny 22 gauge wire is fine if you have some already$393.20
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HOTEND, BED, ETC
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E3D V6 (24V)$69.991$69.99
https://www.filastruder.com/products/all-metal-e3d-v6-hotend?variant=1236046388
Be sure to order the 24v version, universal with bowden
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E3D Titan$64.991$64.99
https://www.filastruder.com/collections/titanextruder/products/e3d-titan-extruder
Order the "Standard" version
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E3D Bowden Coupler$7.991$7.99
https://www.filastruder.com/collections/e3d-spare-parts-and-accessories/products/bowden-couplings-all-types?variant=21286000324
Be sure to select "1.75mm" and "Groovemount"
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LokBuild 12x12 Print surface$25.001$25.00http://a.co/5QvJMjYThis is optional, any print surface in a 250mm^2 or 10x10 works. Printinz, PEI, boro etc.
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250mmx 250mm Aluminum Bed & Carrier
80180713Maker.comDXF's can be pulled out of the Fusion 360 Model
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Rubber Hose For between bed & carrier$4.991$4.99http://a.co/hhEkxIWYes, really. It acts like a very stiff spring for levelling the bed.$252.96
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Total$1,173.73
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Optional Components
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PanelDue (5" with pre-made cable)$94.991$94.99
https://www.filastruder.com/collections/electronics/products/paneldue?variant=35407854479
Optional, but recommended
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Aluminum Idler Carriers$201$20.00713maker.com
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Aluminum X/Y/Z Stepper Mounts$251$25.00713maker.com
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5mm shoulder bolt, 10mm shoulder$2.702$5.40https://www.mcmaster.com/#90265A129Required for the aluminum Idler mounts
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5mm shoulder bolt, 20mm shoulder$4.592$9.18https://www.mcmaster.com/#90265A133Required for the aluminum Idler mounts (order 4 if getting the aluminum X carriages)
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