Upgrading RG Sinanju with 107 Upgrade Parts: A How-To Guide
By Fuwa Fuwa Land-Fuwa Fuwa Land | Published: 2026-10-22
Category: How-to Guides
Learn how to install the 107 Upgrade Parts on your RG Sinanju with this step-by-step guide, including prep, fitting, and finishing tips.
Quick Answer
To upgrade your RG Sinanju with the 107 Upgrade Parts, prepare your kit and parts, test-fit each piece, then secure and finish for a clean, detailed build.
Why Add Detail Parts to Your RG Sinanju?
The Real Grade Sinanju already has impressive surface detail, but the 107 Upgrade Parts take it further. These add-on components are designed to bring additional detail and customization to your Gunpla build, allowing you to refine the look of your kit with upgraded pieces. If you enjoy personalizing your models, these parts offer a practical way to stand out without needing advanced skills.
One trade-off to keep in mind: adding aftermarket parts increases build time and requires careful handling. The upgrade set is not a snap-fit replacement; you'll need to trim, sand, and sometimes glue pieces to get a perfect fit. If you're a seasoned builder, this is part of the fun. If you're newer, take your time and follow the steps below.
Step-by-Step Installation Guide
- Prepare your workspace and tools: Lay out your RG Sinanju kit and the 107 Upgrade Parts. You'll need a hobby knife, fine sandpaper or a glass file, and plastic cement or super glue. Clean the parts with mild soap and water to remove any mold release residue. Check that all 107 parts are present before starting.
- Test-fit each upgrade part: Before applying glue, dry-fit each upgrade part to its intended location on the RG Sinanju. Use masking tape to hold parts in place if needed. This helps you spot areas that need trimming or sanding for a flush fit. Do not skip dry-fitting; it prevents misaligned parts later.
- Trim and sand for a seamless fit: Use a hobby knife to remove any excess plastic or nubs from the upgrade parts. Sand the contact surfaces gently with fine-grit sandpaper (e.g., 600-1000 grit) to ensure the parts sit flat against the kit. Test-fit again after sanding. Go slow; removing too much material can create gaps.
- Secure the parts with adhesive: Apply a small amount of plastic cement or super glue to the back of each upgrade part, then press it into place. Hold for a few seconds to set. For larger parts, use a clamp or rubber band to hold them while drying. Use adhesive sparingly to avoid visible squeeze-out.
- Finish and protect the build: Once the glue is dry, clean up any excess adhesive with a hobby knife or sandpaper. If you plan to topcoat, apply a thin layer of matte or gloss clear coat to seal the parts and give the kit a uniform finish. Let the topcoat cure fully before handling the model.
Product Facts
- 107 Upgrade Parts - RG Sinanju: The 107 Upgrade Parts set is compatible with the RG Sinanju and includes add-on components designed to bring additional detail and customization to your Gunpla build. This means you can enhance the look of your RG Sinanju without needing to paint or modify the base kit extensively.
107 Upgrade Parts - RG Sinanju
