Zvezda 3688

Zvezda SU-100 Soviet Tank Destroyer Model Kit 3688 Instruction Manual

Model: 3688 | Brand: Zvezda

1. Introduction

The SU-100 is a World War II Soviet tank destroyer armed with the 100mm D-10S gun. It was developed from the T-34/85 medium tank by the Uralmashzavod design bureau in late 1943/early 1944 as a modified version of the earlier SU-85. The SU-100 played an important role on all Soviet fronts in late WWII. This Zvezda model kit (3688) allows you to build a detailed replica of this historic vehicle.

This kit is an unpainted plastic model, featuring 289 parts at a 1:35 scale, resulting in an approximate length of 11 inches (27.7 cm) when assembled. It is designed for assembly and is suitable for modelers aged 12 years and older.

Assembled Zvezda SU-100 model kit, front-side view

Image 1.1: Fully assembled Zvezda SU-100 model kit.

Historical photograph of a real SU-100 Soviet Tank Destroyer

Image 1.2: A historical SU-100 Soviet Tank Destroyer.

2. Setup and Assembly

This model kit requires assembly. The instructions are primarily visual, presented through diagrams. Familiarity with model building techniques and tools is recommended. Essential tools such as plastic cement, hobby knife, and sprue cutters are not included and must be acquired separately.

2.1 Kit Contents

  • Unpainted plastic parts (289 details)
  • Decal sheet
  • Nylon mesh for engine grill
  • Assembly instructions (picture-based)

2.2 General Assembly Guidelines

  1. Preparation: Carefully remove parts from the sprues using sprue cutters. Clean any flash or mold lines with a hobby knife or sanding stick.
  2. Test Fit: Always test fit parts before applying cement to ensure proper alignment and fit.
  3. Cement Application: Apply plastic cement sparingly to bonding surfaces. Allow sufficient drying time as per the cement manufacturer's instructions.
  4. Small Parts: This kit contains small parts. Exercise caution during handling and assembly.

2.3 Key Assembly Steps and Considerations

  • Lower Hull Assembly: The lower hull is constructed from five separate flat panels. Precise alignment is critical during this step to ensure a straight and gap-free chassis. Refer closely to the visual instructions for locating indicators.
  • Track Assembly: The kit includes individual track links and an assembly jig. Follow the jig instructions carefully for accurate track construction. It is advisable to assemble the tracks before permanently gluing the drive sprocket and return idler wheels, as the spacing between the fender and these parts can be tight.
  • Engine Grill: The kit provides a nylon mesh material for the engine grill, which offers a realistic scale appearance. This material is typically white and packed with the decal sheet. Do not use paper for this component.
  • Gun Barrel: The main gun barrel is designed to be positionable, allowing for elevation and deflection. Ensure careful assembly of the gun mount to maintain this functionality.
  • Hatches: The kit allows for various hatches to be assembled in either open or closed positions. Decide on your preferred configuration during assembly.
Close-up view of the top hull details of the SU-100 model

Image 2.1: Detailed view of the SU-100 model's top hull, showing hatches and engine deck.

Side view of the SU-100 model showing track and road wheel assembly

Image 2.2: Side profile of the assembled SU-100 model, highlighting the track and wheel details.

3. Usage and Display

Once assembled, the Zvezda SU-100 model is intended for static display. It is not designed as a toy for active play. Handle the model with care to prevent damage to delicate parts.

3.1 Painting and Finishing

The kit is supplied unpainted. For a realistic finish, apply model paints and weathering effects after assembly. Refer to historical references for accurate color schemes of the SU-100. The included decals can be applied to add markings and insignia.

4. Maintenance and Care

To preserve the appearance and integrity of your SU-100 model, follow these care guidelines:

  • Dusting: Regularly dust the model with a soft brush or compressed air to prevent dust buildup, which can be difficult to remove from intricate details.
  • Storage: Store the model in a stable environment, away from direct sunlight, extreme temperatures, and high humidity, which can cause paint fading or material degradation.
  • Handling: Always handle the model by its sturdy base or main body. Avoid touching delicate parts like antennas, gun barrels, or small details to prevent breakage.
  • Cleaning: For stubborn dirt, gently wipe with a slightly damp cloth. Avoid harsh chemicals or abrasive cleaners.

5. Troubleshooting Common Assembly Issues

While Zvezda kits are generally well-engineered, some common challenges may arise during assembly:

  • Part Fit Issues: If parts do not fit perfectly, gently sand or trim the mating surfaces. Always test fit before cementing.
  • Gaps: Minor gaps can be filled with plastic putty or stretched sprue. Ensure surfaces are clean before applying filler.
  • Instruction Discrepancies: In rare cases, part numbers in the instructions may be duplicated or unclear. Rely on the visual diagrams and your judgment to identify the correct parts.
  • Fragile Parts: Some thin or small parts may be prone to breakage. Handle them with extreme care. If a part breaks, plastic cement can often reattach it, or it may need to be replaced with a scratch-built component.
  • Warped Parts: If a plastic part is slightly warped, it can sometimes be straightened by gently heating it with warm water or a hairdryer and then holding it in the correct shape until it cools.

6. Specifications

BrandZvezda
Model Number3688
Model NameSoviet Tank Destroyer SU-100
Scale1:35 Scale
Number of Parts289
Assembled Length (Approx.)11 inches (27.7 cm)
MaterialPlastic
ColorUnpainted
Assembly RequiredYes
Recommended Age12 years and up (144 months)
Image detailing the scale (1/35), number of parts (289), and length (27.7 cm) of the SU-100 model kit

Image 6.1: Key specifications including scale, part count, and assembled length.

7. Warranty and Support

Specific warranty information for the Zvezda SU-100 model kit is not provided in the product details. For any inquiries regarding missing parts, manufacturing defects, or assembly assistance, please contact the retailer or Zvezda customer support directly. Keep your proof of purchase for any potential claims.

© 2026 Zvezda. All rights reserved. This manual is for informational purposes only.

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