Collection: Learn about watches: Sandwich dial for improved lume performance

 


  • Sandwich dial with BGW9 Superlume for NH35 divers. Thick lume application for best lume performance.
  • To achieve the brightest lume, after creating the best mix of luminous paste (we'll cover this in detail in another guide), we need to maximize the area and thickness of the application. There are two common ways to apply lume onto a dial: printing, or lume filling. The prior is extremely challenging after multiple layers of printing, as the lume paste will start to flow to the side and affect the printed shape. The latter is also challenging and generally costly as this method will require metal indices or shaped dial features designed with lume filling in mind.

    This is when sandwich dial comes to the rescue. A sandwich dial is a dial that consists of a luminous bottom layer and a top layer with design elements and cutouts that expose the lume underneath. The bottom layer includes large recessed areas that will allow generous and easy application of luminous materials. Therefore, if done correctly, a sandwich dial can easily glow brighter than a dial with over 30 layers of printed luminous materials.

    Beware of fake sandwich dials in the market though, as we do have dial makers cutting the cost by simply stamping the metal plate and filling a shallow layer of lume at the recessed areas. These dials will have significantly weaker lume and less depth on the design of the dial.

19 products
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    DIY Watchmaking Kit | NH34 GMT Dive Watch | Seiko GMT movement | Ceramic Coke GMT Bezel | DWC-D03
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  • DWC D03 GMT Forest Green Sandwich Lume Dial for TMI NH34
    DWC D03 GMT Forest Green Sandwich Lume Dial for TMI NH34/NH35
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    ¥7,200
    Sale price
    ¥7,200
  • DWC D03 GMT Maroon Red Sandwich Lume Dial for TMI NH34
    DWC D03 GMT Maroon Red Sandwich Lume Dial for TMI NH34/NH35
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    Sale price
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  • DIY Watchmaking Kit | 42mm NH34 GMT BATMAN Dive Watch | Automatic GMT Blue and Black | Ceramic Batman GMT | DWC-D03 RIVAL
    DIY Watchmaking Kit | NH34 GMT BATMAN Dive Watch | Automatic GMT Blue and Black | Ceramic Batman GMT | DWC-D03 RIVAL
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    Sale price
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  • DIY Watch Kit | 42mm Blue GMT Dive Watch | Seiko NH34 Automatic GMT | 24hr Blue Bezel (Stainless Steel) | DWC-D03
    DIY Watch Kit | Blue GMT Dive Watch | Seiko NH34 Automatic GMT | 24hr Blue Bezel (Stainless Steel) | DWC-D03
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    ¥72,000
    Sale price
    ¥72,000
  • DIY Watch Kit | 42mm GMT Pepsi Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
    DIY Watch Kit | GMT Pepsi Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
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    ¥73,800
    Sale price
    ¥73,800
  • [LIMITED] DIY Watchmaking Kit | 42mm PVD Black GMT BATMAN Dive Watch | Seiko Automatic GMT movement | DWC-D03
    DIY Watchmaking Kit | PVD Black GMT BATMAN Dive Watch | Seiko Automatic GMT movement | DWC-D03
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    Sale price
    ¥101,300
  • DIY Watch Kit | 42mm GMT Sprite Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Green & Black GMT Bezel | DWC-D03
    DIY Watch Kit | GMT Sprite Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Green & Black GMT Bezel | DWC-D03
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    ¥73,800
    Sale price
    ¥73,800
  • [LIMITED] DIY Watchmaking Kit | 42mm PVD GMT Coke Red-Black Dive Watch | Seiko Automatic GMT movement | DWC-D03
    [LIMITED] DIY Watchmaking Kit | PVD GMT Coke Red-Black Dive Watch | Seiko Automatic GMT movement | DWC-D03
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    ¥101,300
    Sale price
    ¥101,300
  • [Modding Starter Combo] DIY Kit Bundle | 42mm Dive GMT Coke, Pespi, and Silver steel Bezel | Seiko Automatic GMT movement | DWC-D03
    [Modding Starter Combo] DIY Kit Bundle | 42mm Dive GMT Coke, Pespi, and Silver steel Bezel | Seiko Automatic GMT movement | DWC-D03
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  • 42mm Blue Bronze Dive Watch kit with Nato Strap | D03 Deep Blue Sandwich Dial with BGW9 SuperLume | Movement: Seiko Automatic
    42mm Blue Bronze Dive Watch kit with Nato Strap | D03 Deep Blue Sandwich Dial with BGW9 SuperLume | Movement: Seiko Automatic
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  • 42mm White dial "Coke" Diver Dress GMT Watch Kit | Stainless Stain Bracelet | Ceramic Red-Black GMT Bezel | DWC-D03
    White dial
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    ¥90,700
    Sale price
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  • 42mm White dial "Batman" GMT Watch Kit | NH34 GMT Dive Watch | White FKM Rubber Band | Ceramic Blue-Black GMT Bezel | DWC-D03
    White dial
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    ¥82,700
    Sale price
    ¥82,700
  • DIY Watch Kit | 42mm Blue Bronze Dive Watch w/ Brown Vintage Strap & Sandwich Dial (Seiko NH35)
    DIY Watch Kit | 42mm Blue Bronze Dive Watch w/ Brown Vintage Strap & Sandwich Dial (Seiko NH35)
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    Sale price
    ¥93,300
  • DWC D03 GMT Deep Blue Sandwich Lume Dial for TMI NH34
    DWC D03 GMT Deep Blue Sandwich Lume Dial for TMI NH34
    Regular price
    ¥7,200
    Sale price
    ¥7,200
  • 42mm White Dial "Pepsi" GMT Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
    42mm White Dial GMT Pepsi Dive Watch | Seiko GMT movement | Aluminum-Steel Hybrid Red & Blue GMT Bezel | DWC-D03
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    ¥79,100
    Sale price
    ¥67,600
  • 42mm White Dial "Explorer" GMT Watch Kit | Stainless Stain Bracelet | Silver GMT Bezel | DWC-D03
    42mm White dial Diver Dress GMT Watch Kit | Stainless Stain Bracelet | Silver GMT Bezel | DWC-D03
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    ¥79,100
    Sale price
    ¥67,600
  • DWC GMT D03 White Sandwich Lume Dial for TMI NH34 (Fine silver coated edition)
    DWC GMT D03 Silver Sandwich Lume Dial for TMI NH34  seiko
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    ¥7,200
    Sale price
    ¥7,200
  • NEW ARRIVAL - Plated 925 Silver 42mm PEPSI GMT Dive Watch kit | Vintage Diver with Patina | Aging experience | Seiko NH34
    NEW ARRIVAL - Plated 925 Silver 42mm PEPSI GMT Dive Watch kit | Vintage Diver with Patina | Aging experience | Seiko NH34
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    ¥80,900
    Sale price
    ¥68,500