An Aussie bloke had a thread on this over on TalkBS 😀
He'd bought round diamond files from an Ali-Ex tool store, B2 Mold Accessories, and wanted to share his good news. Now as the name suggests, B2 are a tool store selling a wide range of abrasives.
Pretty important point as instead of some joker touting welding tip files to "luthiers" it's a business with a focus on grinding and shaping tools 🙂
Caused a few ruffled feathers with the Stew Mac/Gotoh crowd, especially when he countered their "Buy quality, buy once. Buy cheap, buy twice" pish by pointing out that at $1AUD he could buy 100 times and still not reach to their $105USD 😃
They cost a bit more now, £1.46 each or 5 for £2.82. For bass guitars you want 1.2mm (0.046) going up to 3.2mm (0.125).
I'd leave a link but copy/paste is just leaving text 😞
Will post a follow once I see where I'm going wrong 👍