---
layout: default
title: Stage 2
nav_order: 2
parent: Stages
permalink: docs/stages/stage-2
---

{% capture preface %}
> The goal of this stage is to drop the next heaviest parts on the X carriage: The V-slot wheels and steel mounts. This will yield us another **270g** of moving weight reduction--that's another half pound!
{: .fs-5 .fw-300 .text-grey-dk-100 .text-justify }
{% endcapture %}
{% include docs-preface.html
  title="# Stage 2: Linear Y Rails"
  image="/assets/images/docs/stages/stage-2/stage-2-render-lg.png"
  alt="Endorphin stage 2"
  content=preface
%}

---

## Bill Of Materials

#### Linear Rails

| Size         | Length | Quantity | Link                                                   |
| :----------- | :----- | :------- | :----------------------------------------------------- |
| MGN12H Rails | 300mm  | 2        | [Amazon](https://www.amazon.com/gp/product/B09QPCTYDM) |

#### Bolts

| Part             | Type              | Quantity | Link                                                   |
| :--------------- | :---------------- | :------- | :----------------------------------------------------- |
| M3x8 socket head | ISO 4762, DIN 912 | 20       | [Amazon](https://www.amazon.com/gp/product/B08R3GJGWT) |

#### T-Nuts

| Size           | Quantity | Link                                                   |
| :------------- | :------- | :----------------------------------------------------- |
| M3 2020 T-nuts | 12       | [Amazon](https://www.amazon.com/gp/product/B08NZMD2BJ) |

---

{% capture printing %}
Deciding which face to print is somewhat of a tossup for these two pieces, as far as strength goes. Pictured is the print orientation used for testing and the test printer has been going strong for 6 months now with no issues.
{: .text-justify }
{% endcapture %}
{% include docs-step.html
  heading="## Printing"
  image="/assets/images/docs/stages/stage-2/plating.png"
  alt="Endorphin stage 2 plating"
  content=printing
%}

{: .note }
A great help in mounting the rails is an [MGN12 alignment tool](https://www.thingiverse.com/thing:2368837). There are dozens of other options on Thingiverse and Printables. You'll want to print this tool before the next step.

{% capture left %}
1. Loosen the X and Y belts then slide the Y belts out of the wheel plates. You won't be able to reuse these belts so you can toss them.
1. Remove the v-slot wheel screws and wheels on the left wheel plate
1. Remove the two screws on the underside of the plate which attach it to the X gantry and save one of these screws for later
1. The plate can now be removed from the gantry
1. Using M3x8 screws and T-nuts, attach an MGN12 rail to the frame (this is where the alignment tool comes in handy)
1. Attach your new left linear mount (the smaller of the two) to the linear bearing block (the slidey thing) using M3x8 screws
1. Press the X gantry into the 20mm cutout in the mount then use one of the M5 screws from step 3 to secure mount to the X gantry from the underside

{% endcapture %}
{% include docs-step.html
  heading="## Left Side"
  video="/assets/vids/docs/stage-2/assembly-left-linear-y.mp4"
  content=left
%}

---

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