SV08 Gantry v2 – Precision & Easy Tensioning

🧰 Overview

SV08 Gantry v2 brings a cleaner, more precise CoreXY experience:

Front-access belt tensioning for the AB motors (Voron-style)

Aligned pulleys at the XY joints for parallel belt paths

Easier setup & maintenance with more travel for fine alignment

Optional double-shear support version for extra rigidity 

This is the new gantry repo. The previous “SV08 3D-Printed Gantry” stays online so existing users can reprint replacement parts if they don’t want to switch.

✅ What’s New (v2)

AB motor tensioners accessible from the front of the printer

Redesigned XY joints to align pulleys with the front idlers

Improved belt path parallelism → better tracking & accuracy

More tensioning travel → faster, repeatable alignment

📦 Files Included

Printable parts for the SV08 Gantry v2 (CoreXY)

XY joint set, front idlers, AB motor mounts, covers

(Optional) Double-shear variant parts (when released, will be added here)

🛒 Hardware (BOM) – Core items

• Heat-set inserts: M3, M4, M5   

🔩 Screws

• M3×8 SHCS → 16 pcs
• M3×10 SHCS → 8 pcs
• M3×25 SHCS → 8 pcs
• M3×30 SHCS → 4 pcs
• M3×40 SHCS → 2 pcs
• M4×30 SHCS → 16 pcs
• M5×10 BHCS → 4 pcs
• M5×14 SHCS → 1 pc
• M5×25 SHCS → 7 pcs
• M5×35 SHCS → 2 pcs

Heat-set inserts

• M3 (Ø4.5 mm, L 4–5 mm) → 29 pcs
• M4 × 5 mm → 16 pcs
• M5 × 4 mm → 14 pcs

Nuts / Spacers

• M3 nut — 2 pcs
• M5 × 1 mm spacer — 2 pcs

Bearings and Pulleys

• Idler pulleys USE Reuse stock!  or this is a good candidate
• REPLACEMNET PULLEYS DIRECT FIT BETTER QUALLITY 

GT2 Idler Pulley (20T, 9-9.3 total width)5mm bore	2
GT2 Idler Pulley (20T, 9-9.3 total width)5mm bore	12
GT2 Motor Pulley 20T, 5mm bore	2

• 4x GE5C bearing + M5 washer (for Z holder integration) 

Belts

• 4Meters of GT2 6mm Belts 
• Existing SV08 belts & pulleys can be reused

Tip: Don’t overtighten pulley screws—keep them snug and spinning freely.

🧭 Assembly

• See the manual! go to the Download section and scroll down! 
• 📄 Assembly Guide (PDF): go to the download and download the PDF!

🖨 Print Settings (Recommended)

• Material: ABS  Polymaker Aff Link 
• Perimeters: 4–5
• Infill: 20–30% (Gyroid/Cubic)
• Layer height: 0.2 mm
• Walls & holes tolerance: enable horizontal expansion if needed

Heat-set inserts: install with a soldering iron & alignment jig if available

🔧 Compatibility

• Printer: Sovol SV08 

📝 Print Note – AB Motor Lower Part

⚠ Many users of the previous version had problems here due to incorrect supports.

Do NOT use “Tree Supports” unless you leave a big gap — with just 1–2 layers of support, they don’t work well for this part.

Instead, use Grid Supports (auto-generated) as shown in the preview example.

No extra custom settings are needed — just let the slicer generate grid supports.

✅ This ensures proper bridging around the motor mount holes and avoids weak or messy overhangs.




If you use the physical endstop download the proper part for the A motor ( the one on Right) and the endstop holder
 

If you use the OG Toolhead! you will need this print
https://www.printables.com/model/1143921-fix-sovol-sv08-hot-end-belt-clip

in order to have the belt parallel to the X beam other wise you will have it like the green line in the picture below! 
Thanks @WaldecirSant_1983916  for all the feedback!






💬 Want to Help Improve It?

If you test it, please leave a Make or comment with your results and suggestions. We’ll include all confirmed improvements in the final release.

Let’s bring our Sovol printers to the next level – together! ⚙🔥


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