![]() It can be a fine line sometimes, but try to stay on the non-commercial side of it. Even the pros deserve to have a place where they can just hang out and be hobbyists again. No selling It's OK to share the things you've made or a cool new product you've discovered, but this isn't the place to market products or web sites. Stay on topic You can post anything as long as it is related to knives: buying knives, collecting knives, sharpening tips, maintenance tips, how you use your knives, news related to the knife world in general, knife memes, etc… If there’s a knife in your post, feel free to post it.Ībout "NSFW" content NSFW content is, for the most part, permitted on this sub as long as it’s not: gore, knife fights (and fights in general) or pornography of any kind. Be helpful, polite, and welcoming to knife newbies.Posts and comments inciting violence, harassment or discrimination based on someone’s physical features, personal beliefs and place of birth/place of residency are not welcome here. Treat the other readers with courtesy and respect It is okay to offend people on r/knives, but it isn’t okay to put any effort into it. Work knives, tactical knives, kitchen knives, fixed-blades and folders scissors, hatchets, machetes, or multitools-we're not picky!Īre you a newcomer to the world of knives and want the subreddit's advice on what knife to get? Check this guide The finished spikes shall conform to the dimensions specified by the purchaser, subject to the permissible variations specified in Table 2-1.Īll finished spiked shall be straight, with well formed heads, sharp points and be free from injurious defects and shall be finished in a workmanlike manner.Discussion, pictures, and advice on bladed tools of all kinds. If the spikes fail to meet the third test, they shall be rejected.Ģ.2.9 PERMISSIBLE VARIATIONS IN DIMENSIONS (1968) ![]() Spikes represented by bend tests failing to meet the requirements prescribed in Article 2.2.6a and Article 2.2.6b may be annealed and resubmitted. One bend test of each kind specified in Article 2.2.6a and Article 2.2.6b shall be made from each lot of 5 tons or fraction thereof.ĥ-2-6 AREMA Manual for Railway Engineering When the option in Article 2.2.5 is exercised, one tension test shall be made from each 10-ton lot or fraction thereof.ī. But no, it won't get as hard as another bit of steel with 30 points.Ī. ![]() Or look in chapter 6 of Principles of Heat Treatment of Steel by Krauss for a very good graph.Ī spike or other bit of steel with 20 points of carbon can indeed be hardened. Retained austenite can actually diminish maximum attainable hardness at carbon levels beyond this.) Run an internet image search with the terms "carbon" and "hardness" and a few renditions of this graph will show up. ![]() Maximum attainable hardness levels out around 60 or 65 points. The more carbon available, the more martensite which can be formed. The maximum attainable hardness of a given piece of steel versus the carbon content forms a curve on the graph. There is no magic number above which steel will harden or below which it will not. No disrespect meant to a fellow electrician, but I'm going to get nitpicky here. No you cant HT a spike, sorry read about heat treating and you will understand that one needs at least 35 points of carbon to harden a steel ![]()
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