add rear umbilical + y endstop relocation mod (#704)

* add rear umbilical mod

* Update README.md

* Update README.md

* update folder structure

* Create Rear_Umbilical.step

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

Co-authored-by: Vesh <71715518+DSG1307@users.noreply.github.com>

printer_mods/Minsekt/Rear_Umbilical/README.md

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+# Rear Umbilical Addon and Y Endstop Relocation
+
+| BOM | Pieces |
+| ------ | ------ |
+| M3 Heatinsert | 4x |
+| M3x10 SCHS | 4x |
+
+![umbilical](./images/rear_umbilical.png)
+
+since my a/b motor mounts are MJF single pieces i needed a way to add umbilical compatibility without the need to reprint anything. so i designed this.
+its however heavily based on Selliot79's Design. i just designed it to be a bit smaller, to fit a IGUS CF5.05.18 perfectly and moved the mountings to the rear, so theres space for a [Y Endstop relocation](./Y_Endstop_Relocation) 
+
+
+

printer_mods/Minsekt/Rear_Umbilical/Y_Endstop_Relocation/README.md

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+# Y Endstop Relocation.
+
+
+| BOM | Pieces |
+| ------ | ------ |
+| M3x35  | 2x |
+
+![rear](./images/endstop.png)
+
+Once youll go Umbilical you need to relocate your Y Endstop.
+my whole build ist printed in single-piece MJF's, so i did not want to reprint everything. 
+
+figured im not alone with the last, so i designed this one.
+Its position is the same as Hartk1213's Y endstop relocation but with the possibility to adjust it. 

printer_mods/README.md

@@ -260,6 +260,7 @@ like so:
 | Mellow | [V0 Fly-Gemini](./Mellow/V0_Fly-Gemini) | Fly-Gemini adapted model for V0 | :heavy_check_mark: | :x: | :x: | :x: | :x:|
 | mikepthomas | [MKS Mosfet Mount](./mikepthomas/MKS_Mosfet_Mount) | MKS Mosfet Mount based of the Trident Raspberry Pi Mount. | :x: | :heavy_check_mark: | :heavy_check_mark: | :x: | :heavy_check_mark: |
 |MikesMods|[LGX mount for V0.1 with 2nd X rail](./MikesMods/LGX_mount_for_V0.1_with_2nd_X_rail) |V0.1 mod for mounting Bondtech LGX extruder with addition of 2nd X rail on the back of the 1515 extrusion. | :heavy_check_mark: | :x: | :x: |:x:|:x:|
+| Minsekt | [Rear Umbilical](./Minsekt/Rear_Umbilical) | Rear Umbilical mounting solution including a relocated Y-Endstop | :x: | :heavy_check_mark: | :x: | :x: | :x: |
 |mjoaris |[10x11 Cable Chain Endcaps](./mjoaris/10x11_Cable_Chain_Endcaps) |Printable Endcaps for 10x11 Cable Chains |:x: |:heavy_check_mark: |:heavy_check_mark: |:x:|
 | |[Mini12864 LCD Mount](./mjoaris/Mini12864_LCD_Mount_for_V2.4) |Swiveling case for the Fysetc Mini12864 LCD |:x: |:grey_question: |:heavy_check_mark: |:x:|
 |Mosher|[Door hinges with M3 screws shafts](./mosher/m3_door_hinges) |Simple mod of print in place door hinges, which uses m3 screws as shafts. |:x:|:x:|:heavy_check_mark:|:x:|