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🛠️ Master your metal’s true grit with TSUBOSAN precision!
The TSUBOSAN Kosiy Japan-Hardness Tester Checker is a professional 6-piece steel file set designed to accurately gauge steel hardness between HRC40 and HRC65. Crafted from durable alloy steel and finished with a polished handle, these compact files come in a custom-fitted case, offering a portable, cost-effective solution for metalworkers and knife makers to verify heat treatment results without expensive equipment.
| ASIN | B000TGHFLC |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 39,684 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 50 in Surface & Hardness Testing |
| Colour | Polished Steel |
| Customer Reviews | 4.7 4.7 out of 5 stars (576) |
| Date First Available | 6 Sept. 2012 |
| Finish | Polished |
| Handle material | Alloy Steel |
| Included Components | Custom-fitted case |
| Item Package Quantity | 1 |
| Item Weight | 230 g |
| Item model number | JS100 |
| Manufacturer | TSUBOSAN FILE CO., Ltd |
| Material | Alloy Steel |
| Number of Pieces | 6 |
| Part Number | MA00600_4058 |
| Product Dimensions | 20.9 x 1.02 x 1.02 cm; 230 g |
| Special Features | Hardness testing |
| Usage | Metalworking |
B**S
A tad expensive, but
I make knives and can’t afford a Rockwell tester. These are a decent way of testing after heat treatment, but are a bit awkward to understand at first.
呂**布
アカン安物の包丁を買ってしまい(研いでも刃が付かない)硬度を調べると案の定HRC65以上でしたショボイSKでは刃物にするには無理な硬度です、焼き戻しでHRC60弱迄戻して一件落着 硬度計は高いのでこの商品を買いましたが使い易かったです
C**N
Tsubosan est un must
J**D
By golly, the dang things work. I trust them. I used them on mild carbon steel axes I knew from manufacturer specs to be between 50 and 55 rockwell, and that's what these indicated as well. I used them on steel I expected to be at or just under 60, bang on. And then I used them on metal I had suspected was not tempered corrected, sub 50. Well below 50. And guess what? These files told me it was below 45. They worked! (How many times will they work? Well... I figure I'll get my money's worth out of them for my purposes, as I don't need to test EVERYTHING. Just double check when I suspect something is off.
A**R
These work great for getting a ballpark measure of Rockwell hardness of steel. I currently use them for knife making and they seem to do the trick untill I can invest in a propper Rockwell hardness tester.
P**R
Good product
Trustpilot
2 weeks ago
2 weeks ago