Recommendation? - Drill Bits for steel | BladeForums.com
2019年6月1日 · Also, technique in drilling through steel is very important. I am not an expert in this - I would recommend going to YouTube - there are some good general machinist videos out there on drilling through steel. The basic points to keep in mind are: 1) slow drill speed, 2) sharp bits, 3) moderate and CONTINUOUS pressure. all the above should ...
Best drill bits for drilling into steel? | Contractor Talk ...
2011年3月9日 · I run cobalt drill bits with a 135-degree tip, up to 1/2" diameter, in my drill press through 1/4" and 3/8" mild steel plate pretty routinely without troubles. No pilot hole, but I do use a center punch and a couple of drops of cutting oil with medium speed and normal pressure.
Difference between Cobalt and Carbide drill bits?
1999年4月17日 · Jan 6, 2002. #2. Carbide bits can be used to drill already hardened steel. But they are brittle and tend to break if you're not real careful. Cobalt bits are the greatest for drilling annealed ready to work steel. They will outlast high speed steel bits four to one so they are worth the little bit extra they cost. Hope this helps.
Drill bits for drilling tangs - BladeForums.com
2007年12月25日 · I have been using modest priced high speed steel drill bits for years. A drill press will make things much easier, and it was one of the first pieces of equipment that I aquired for the knifeshop. Anyways like you I first started by using a variable speed hand drill. Stand comfortably and first drill a pilot hole 3/32.
Best drill bit for tile - Contractor Talk
2024年4月14日 · Only bits I have found that really work are the Relton Groo-V bits. Rotary or hammerdrill both work well with the same bit. They go through everything I have thrown at them when doing shower doors like butter. You can hear them grind through. I usually only use 1/8, 3/16 and 1/4 inch for what I do.
Carbide drill bits through hardened steel? | BladeForums.com
2013年12月15日 · The issue is that they're the most wear resistant steels on the market and they're all harder than most steel normally is. Most guidance on carbide drilling I can find only reference hardened steel at something like 50 RC. A lot of these guys are shocked that people work with steels at 60 RC.
Drill bits for phenolic/g10/micarta - BladeForums.com
2009年7月13日 · 7,676. Dec 22, 2011. #8. R. Scheppmann Knives said: I use the cheap titanium coated bits on Micarta and G10; running the same speed as I drill my metal. Never had any issues. Bingo, that's exactly how I drill my handle materials, whether it's G-10, micarta, carbon fiber, or any other resin based material. I save my cobalt bits for the steel.
drilling tempered steel - BladeForums.com
2006年7月8日 · 1,140. Mar 9, 2011. #5. Diamond is not a good option for steel. You should be fine with a solid carbide spade drill. There is a synthetic diamond called CBN (cubic boron nitride) that would probably work, but they are very expensive. Regular diamond should never be used on steel, since the diamond is composed of carbon and there is carbon in ...
Drilling and WD40 vs. Cutting fluid | BladeForums.com
2013年6月7日 · Tapmatic Steel Cutting Fluid is essentially pure kerosene. WD-40 is kerosene and fish oil. The only real benefit of cutting oil in this application is to prevent chips from sticking to and building up on the cutting edge and in the flutes of the drill. Many modern coatings on drills negate the use of lubricants.
Drilling Through Normalized (?) O1 Tool Steel - BladeForums.com
2015年7月4日 · A yellow heat is usually too hot for a normalizing heat. 1050, 1060/5, 1070/5, 1080/5 is all good sword steel and less problematic. But 01 is good steel and if that's your choice, learn all you can about it. Learn to anneal it for drilling holes …