2004年8月20日 · That will anneal a lower carbon steel just fine. But, for a high carbon file, it can create a hard form of pearlite that will give you problems later. The oil quench after the steel is cooled down to about 900°F is a much better method for higher carbon content steels. Save the canola oil to use again when re-hardening the blade in HT.

2015年2月19日 · For rapid steel removal, it is darn hard to beat the Pferd 14" chip breaker, from Amazon. All Pferd and Grobet files are top of the line. Simonds is a more affordable file that is WAY better than the new Nicholsons. I buy Pferd and Simonds from Amazon. The problem with new Nicholsons are they are made in Mexico and some in brazil.

2006年11月9日 · However, hardened steel file guides without carbide, can be used to great success for hand work, but don't hold up to use with powered abrasives. You probably can't "go wrong" with any of the options, but the OP asked for opinions, and you know we've got some to give round here.

2011年11月28日 · In the 1921 book Munitions Manufacture In The Philadelphia Ordnance District there is a chapter on McCaffrey File company mainly about the role they played in supplying the US military during WWI. There is a brief description of the manufacturing process beginning with "The steel used in making the McCaffrey Files comes in bars eight to ten ...

2010年7月27日 · So, I know a steel file isn't the best for a dagger or fighting knife, well, I don't think it is. It is however all I had available and I am extremely new to this. Stock removal of course and I am doing most of the work by file. My problem is that I am both unsure about what quenchant to use along with the tempering. Any help is appreciated.

1998年10月13日 · If you have to anneal the file in a small spot, heat an old fashioned soldering copper red hot and hold it in the place you are going to drill until it is cool; this keeps the heat localized. Putting a dot of soft solder on the file in the position you are going to anneal conducts the heat through it better when you apply the red hot copper.

2008年1月27日 · Stainless steel files [for use on stainless steel] are there to prevent contamination .Use them only for stainless Use on carbon steel will put bits of carbon steel on the stainless .The carbon steel will rust , and that will continue into the stainless .A proper stainless machining operation will never use the tooling on anything but stainless steel.

2018年11月26日 · So are the Black Diamonds. They were a company that Nicholson bought a long time ago. They left the name for the sake of sales. At the time they were using a 1.30 carbon steel that was produced for them by Bethlehem. At one point they came up with new processing,but the 1.30 Carbon steel was cracking with the new process.

2015年7月25日 · You can now file, grind, sand, and drill holes easily in the softened file. Once the shaping is done, you re-harden the file ( see below on hardening). Steel changes its atomic arrangement ( called its "structure") around 1420F. At the same point it stops becoming magnetic. Using a magnet will tell you when your hot steel is around 1420F.

2006年3月12日 · To me, when you 'file' something you're using a metal file to cut other metal. If your tool is abrasive based your not 'filing' anymore. People talk of diamond 'files', but that is really a 'stone' product like any other abrasive bonded to a handle or mandrel.