- bips/bip-0039.mediawiki at master · bitcoin/bips https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
- Titanium Cold Storage of HD Seed Words:Bitcoin https://www.reddit.com/r/Bitcoin/comments/6jpr7l/titanium_cold_storage_of_hd_seed_words/
- BIP39金屬冷儲數字代碼(隨機12個) DLTDOJO - 熵熱踢道場 https://dltdojo.org/angular1/ddjbtc.html
- BIP39 - Mnemonic Code https://iancoleman.github.io/bip39/
- 洛氏硬度試驗 - 維基百科,自由的百科全書 https://zh.wikipedia.org/wiki/%E6%B4%9B%E6%B0%8F%E7%A1%AC%E5%BA%A6%E8%AF%95%E9%AA%8C
- HRC 25-37, 304 Stainless Steel and 304L Stainless Steel - NKS http://www.nks.com/304_stainless_steel.html
- HRB 70 to 74 Titanium http://www.supraalloys.com/specs.php
- HRB70=HRC27 Hardness Conversion Table http://www.supraalloys.com/specs.php
- 2mm x 50mm x 90mm (略小於名片)
- NTD 100 1PC
- 2mm
- 0~8 (9 PCS)
- A~Z (26 PCS)
- &.@ (3 PCS)
- Punch Holder 1 PC
- 硬度 HRC 60度 正負 2
- NTD 560
鋼印組內附punch holder敲擊無法敲出足夠深度,可改木槌等手工敲擊,無夾具。
- 手敲字不易對齊對正
- 2mm太小,手工敲擊力道不均,字小如又缺角更容易誤判。
- 2mm字小兩面估計可敲4-6組金鑰,考慮到辨識性與手工易敲性建議4mm。