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Y Carriages for the Railcore 250/300 ZL/ZLT


S/D Carriage

Hemera Mount

Dual Hotend Kit
[Railcore Upgrade Parts]



Designed for the Railcore II printers, this is a mount for the E3D Hemera, made out of 6061 Aluminum. These are compatible with the direct extruder variant of the Hemera.

The Hemera Y Carriage was a joint collaboration with Mandala Rose Works and Filastruder.

The Hemera Y Carriage will use it's very own James Tongue Fan Shroud which you can download from Thingiverse and print yourself. We are offering high temp resin prints of the Hemera Fan Duct as well. They will be printed in Fun To Do High Temp Industrial Resin good up to 225C.

We also have a download link for some STLs from Thingiverse for a BlTouch mount , a cable bundle mount and the needed spacers for the James Tongue fan shroud.

If you are using the full printed Y carriage that comes with kits, you will also need to either print a belt retainer and clip or upgrade to the machined aluminum one.

The mounting location for the limit switch is built into the Hemera Y Carriage as well. Height on the carriage is the same as an e3dv6.

Assembly instructions for Hemera Y Carriage

Hemera Y Carriages are in stock, and will ship within a day.

The 7th picture contains the information on the offsets of the Rear Mounted BLTouch from the nozzle.

Kit Contents

  • Aluminum Hemera Y Carriage (54g)
  • 2 - m2 x 10mm cap head bolts to mount the endstop switch

Hemera Y Carriage


Hemera Fan Duct

This is fan duct specifically designed for the Hemera. Please note, Resin does not have any flex to it, and any bending of it can cause it to crack. Please take care when installing the resin shroud that you install it smoothly and evenly with no binding. Also, make sure you do not overtighten screws when installing this shroud.

We currently have international shipping configured for United Kingdom, Turkey, Germany, France, Sweden, Netherlands, Indonesia, Brazil, Ireland, Norway, Belgium, India, Austria, Canada, Australia, Denmark, Russia, Italy, Switzerland, New Zealand, Malaysia.

If you place an order from a country not in the list above, you will receive an invoice for the appropriate shipping amount.

If you are not in one of those countries, please send us an email at email order and we will get shipping configured for your country. Please include your full shipping address so we can get the correct pricing for you.

All imports, duties, taxes or customs charges are the reponsibility of the receipient.




The Single/Dual Y Carriage (SD Carriage) is a replacement carriage for the printed carriage for the Railcore2 line of 3d printers.

This is the same carriage as our Dual Y Carriage, but with additional hole locations so you can use this as a single extruder plate.

The best part of this is if you want to upgrade to dual extrusion down the road, all you need to do is purchase the upgrade kit, which contains a Dual hotend Fan Shroud printed in high temp FunToDo Indistrial Resin, Adjustable Hotend Rail and Ajustable Groove Mount! (Listing for the upgrade kit coming soon!)

See the listing for the Dual Hotend Y carriage kit below to see more information about the upgrade kit.

To use the James Tongue Aluminum Fan Shroud with the SD Carriage, you need this adapter from Thingiverse.

S/D Carriage Only



Upgrade the S/D Carriage to Dual Extrusion

Please Note: This is not a required option. This is only if you wish to upgrade your S/D carriage from single extruder to dual extruder.

The Upgrade Kit contains: Adjustable Rail, Adjustable Groovemount (fits on rail), and clip. You have the option of ordering a dual extruder fan as well.

Upgrade Kit Options


We currently have international shipping configured for United Kingdom, Turkey, Germany, France, Sweden, Netherlands, Indonesia, Brazil, Ireland, Norway, Belgium, India, Austria, Canada, Australia, Denmark, Russia, Italy, Switzerland, New Zealand, Malaysia.

If you place an order from a country not in the list above, you will receive an invoice for the appropriate shipping amount.

If you are not in one of those countries, please send us an email at email order and we will get shipping configured for your country. Please include your full shipping address so we can get the correct pricing for you.

All imports, duties, taxes or customs charges are the reponsibility of the receipient.




The Dual Y Carriage kit contains everything you see in the pics.

  • Lightweight Aluminum Y Carriage with spots for 2 hotends
  • Adjustable Hotend Mount
  • Hotend Clip for holding Groovemount Hotends
  • Dual Fan Shroud and mounting brackets printed in High Temp Resin (225C max)

The adjustable hotend mount is locked onto a special rail in the Dual Y Carriage with 2 m3 nuts and bolts. The nuts fit in a slot on the back of the rail, and the screws go in from the side, allowing you the abililty to adjust the height of the 2nd hotend from the front of your printer without having to tear anything apart to get to the adjustment screws. The nozzles are 25mm apart from each other.

The fixed hotend mount uses any of the hotend mounts that we sell, for Mosquito, E3dV6 or J-Head hotends. If you choose to put a mosquito mount for your adjustable hotend, you will have to use a groovemount adapter for it, as the adjustable rail won't allow the use of a non-groovemount adapter.

The Dual Output fan shroud was custom designed for us by James Tongue to work with our Dual Hotend Y Carriage and are provided in the kit as a high temp resin print. Resin is FunToDo Industrial Black or Red and is good up to 225C.

We also have a modified BMG mount, actually, 2 of them. They are designed to fit over the fixed or adjustable hotend and can be downloaded from Thingiverse. The other hotend mount is assumed to be using a bowden setup. Obviously, you may change these as you see fit, or even make an adapter to use the Dual BMG extruder. We have left a lot of choice up to the end user on the implementation of this system.

Please Note: The use of this Dual Hotend Y Carriage will cost you approximate 45-50mm in the Y axis on your printer.

The Mandala Rose Works Dual Hotend Y Carriage was tested and approved by J. Steve White of Railcore Labs.

Color of Resin Parts

We currently have international shipping configured for United Kingdom, Turkey, Germany, France, Sweden, Netherlands, Indonesia, Brazil, Ireland, Norway, Belgium, India, Austria, Canada, Australia, Denmark, Russia, Italy, Switzerland, New Zealand, Malaysia.

If you place an order from a country not in the list above, you will receive an invoice for the appropriate shipping amount.

If you are not in one of those countries, please send us an email at email order and we will get shipping configured for your country. Please include your full shipping address so we can get the correct pricing for you.

All imports, duties, taxes or customs charges are the reponsibility of the receipient.