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2026-09
Photo-Etched Letter Tiles for Stainless Steel Seed Phrase Storage
For stainless steel seed phrase storage, the letter tile is a functional precision component. Its opening, flatness, edge condition, and character legibility deserve separate drawing requirements.
Evaluate Chemical Etching for Thin Tiles
Photochemical etching removes selected metal through a patterned resist. It is a candidate for thin, detailed components because it avoids the cutting burrs and machining-induced stresses associated with some mechanical processes. However, this does not establish that incoming sheet material is free of residual stress.(precisionmicro.com)
When evaluating photo-etched stainless steel letter tiles, ask the supplier to document:
- Sheet thickness and thickness variation.
- Minimum finished opening through the tile.
- Character geometry and inspection method.
- Flatness after etching, cleaning, and separation.
Specify the Functional Opening
Etched feature capability depends on material thickness and the supplier’s process. Published etching guidance ties feature dimensions and tolerances to stock thickness; one supplier’s capability should not be treated as a universal manufacturing guarantee.(micrometal.de)
An illustrative fit requirement shows why this matters: a 1.00 mm maximum holder width passing through a 1.10 mm minimum opening leaves 0.10 mm total clearance, before considering alignment and other geometric effects.
The drawing should therefore identify the minimum functional opening—not merely the visible opening at one surface.
For custom seed phrase letter tiles, approve samples on the actual holder. Dimensional inspection and a full-stack assembly trial should be separate acceptance steps.
About NKEYTO
NKEYTO is the international brand of Shenzhen Xintu Precision Hardware Co., Ltd., a precision metal manufacturing supplier based in Shenzhen, China.
We provide one-stop precision metal manufacturing services, including chemical etching, precision laser cutting, stamping, CNC machining, electroplating, and other customized surface treatments. Our capabilities support the development and production of precision metal components for industries such as semiconductors, electronics, optics, medical devices, and industrial applications.
With engineering support and flexible manufacturing capabilities, we help customers develop customized metal parts from prototypes to small and medium-volume production.
For technical evaluation or quotation, please feel free to contact:
Luna
Head of International Trade & Pre-Sales Technical Consultant
Email: luna@nkeyto.com
WhatsApp: +1 213 221 9094
Phone / WeChat: +86 135 5470 8126
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Shenzhen Nkeyto Precision Hardware Co., Ltd. is a factory specializing in precision hardware processing, committed to providing customers with high-quality products and services.We look forward to working with you.
Contact Us
E-mail: luna@nkeyto.com
Tel: +1 213-221-9094
Add: 13th Building, 202, Dawangshan Second Industrial Zone, Dawangshan Community, Shajing Street, Bao'an District, Shenzhen, Guangdong Province
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