Merge pull request #62 from marbocub/master

add Vz330 Y-Gantry-1515

README.md

@@ -61,6 +61,7 @@ like so:
 |            | [Idler Shoulder](./knarfie/shoulder_idler) | Idler mounts with spots for shoulder bolts  | ✔️ | ✖️ | :green_heart: |
 |            | [Trihorn](./knarfie/trihorn_duct) | Trihorn duct for the VZ Printhead | ✔️ | ✔️ | :green_heart: |
 | MadduxVape | [Vz330 Duet Config](./MadduxVape) | Vz330 AWD Config for Duett board| ✔️ |  ✖️ | :green_heart: |
+| marbocub   | [Vz330 Y-Gantry-1515](./marbocub/Vz330_Y-Gantry-1515) | Vz330 Y-Gantry for 1515 size gantry | ✔️ |  ✖️ | :green_heart: |
 | mdwasp     | [Swappable Exhaust Tube](./mdwasp/swappable_exhaust_tube) | Hot-swappable exhaust tube | ? | ✔️ | :green_heart: |
 | panik988   | [Sherpa + NF Crazy front face (bracket)](./panik988/sherpa_nf_crazy_bracket) | NF Crazy Face Mount with bracket for Sherpa | ✔️ | ✔️ | :green_heart: |
 | pbsuper    | [VZTrident](./pbsuper/VZTrident)| Tripple Z for VZbot complete printer. | ✔️ | ✔️ | :blue_heart: |

marbocub/Vz330_Y-Gantry-1515/README.md

@@ -0,0 +1,45 @@
+# Vz330 Y-Gantry-1515
+
+This is the Y gantry bottom parts for the VzBoT Vz330. They are used to replace X gantry to lower cost, lighter weight 1515 size instead of 2020 size.
+
+### examples of 1515 size rods
+|Type|Weight(440mm)|Moment of inertia of area|
+|---|---|---|
+|A6063S−T5 square tube 15x15xt1.5|97g|0.249×10<sup>4</sup> mm<sup>4</sup>|
+|Misumi HFS3-1515|150g|0.280×10<sup>4</sup> mm<sup>4</sup>|
+|MakerBeamXL|147g||
+
+![Image1](images/image-001.jpg)
+
+The geometry and shape is based on the Vz330 V1.2's Y gantry except for minor differences and is fully compatible.
+
+note: After the Vz330 V1.2 is released, the left and the right of the Y gantry are not common parts.  If you are using less than V1.2, please re-printing and combining Y-gantry-top-left and Y-gantry-top-right released by official VzBoT.
+
+![Image2](images/image-002.jpg)
+
+Side dimple marks show the direction of the part. Illustrated below are the left part, the tooth side is the front and the smooth side is the back.
+
+![Image4](images/image-004.png)
+
+## BOM
+
+|Part|STL|PCs|
+|---|---|---|
+|Left Bottom|This Y_gantry_1515_bottom_left-15.0.stl|1|
+|Right Bottom|This Y_gantry_1515_bottom_right-15.0.stl|1|
+|Left Top|The official Vz330 V1.2's Y_gantry_top_left.stl|1|
+|Right Top|The official Vz330 V1.2's Y_gantry_top_right.stl|1|
+|X end stop|The official Vz330 V1.2's XendStop.stl|1|
+
+If the fitting is tight you can use *_15.1-looser.stl instead of *_15.0.stl for fit looser.
+
+## Tested
+
+### Using a 1515 gantry:
+
+I have long term tested using an aluminium 15x15xt1.5 square tube and a MGN12H for X gantry about one year and confirmed there are not really any problems for printing.
+
+### This Y-Gantry-1515:
+
+They are printed IEMAI CF-ABS and tested over the 3 months of 300-600mm/s high speed printings and do not show any problems.
+