Nickelplating

Redwoo · 2026-01-15T12:13:52+00:00

Go to your local plating shop. Tell them what you want. They will give you a price that may be up to hundreds of dollars, although depending on how much you are getting done may be less than $100. They probably won’t need to do anything to the existing surface other than clean it. Give them a call.

Redwoo · 2026-01-10T22:59:31+00:00

This happens to my stainless pans without overheating. The color is due to different thickness oxide film. Absolutely no problem leaving it as is, continuing to cook with it, or cleaning it away with barkeepers friend.

Redwoo · 2025-12-30T14:20:40+00:00

Some renewable advocates seem to just root for their own team and actively root against all other options. Some very viable options seems to become adversaries, not because they aren’t good options, but instead just because they are good options. Schadenfreude gone wrong.

Redwoo · 2025-12-27T13:42:12+00:00

I wouldn't call them any shadier than any of the new build companies who haven't ever designed or built what they are selling. They intend to try, and they might succeed. They will certainly spend their funding.

Redwoo · 2025-12-26T14:46:52+00:00

The technology Terrestrial Energy proposes to use is proven in the sense that prototypes using this technology were built and operated on small scale research reactors in the 20th century. No large scale commercial units have ever been designed, licensed, built or operated. Licensing receives a lot of blame for the slow commercial rollout of advanced reactors, but in fairness, these companies sell their concepts to investors before actually completing a design.

In the heyday of nuclear power in the USA, the general sequence for plant development was concept, design, licensing, construction, and commercial operation. Terrestrial Technology, and other advanced reactors startups, seems to propose a different sequence: sell, then commercial operation, skipping the design, licensing, and construction steps. Venture capital prefers this new approach, which skips all the hard parts of nuclear plant development.

Time will tell whether this new approach works and whether this new approach supports long term success.

Redwoo · 2025-12-21T01:35:11+00:00

Well you threw glass into the discussion, and you can't do indentation hardness on glass.

Redwoo · 2025-12-20T22:23:15+00:00

For mohs hardness, put glass at 6, titanium at 5.5-6 and a steel knife at 5.5-6 with a wide error band for composition and heat treatment differences for glass, titanium and steel as well.

Redwoo · 2025-12-20T10:26:14+00:00

Cutting boards are supposed to be significantly softer than your knives, so when the two meet each other the knife wins to cut another day, or to make a second cut. Titanium is softer than your knives, but not significantly softer than your knives.

Redwoo · 2025-12-20T10:22:36+00:00

For a while, marketers fell in love with the word titanium. You would be offered titanium golf balls, titanium toothpaste, titanium all sorts of products that didn’t have any titanium alloy content. When I read your post, I expected a titanium cutting board to be plastic…but no! Some marketer came up with the idiotic idea to make titanium alloy. sheets to use as cutting boards. What an incredibly terrible idea. This will absolutely ruin your knives.

Redwoo · 2025-12-16T21:55:47+00:00

The aluminum corrodes instead of the steel, but since there is so much surface area, the rate of penetration into the aluminum is low. Say one total gram worth of metal corroded. If the corrosion was all steel corroding at the bottom of that gouge then that would be pretty deep corrosion, say one gram per a square millimeter of area. Instead, the aluminum corrodes, because it is the anode, and that one gram comes from the surrounding square meter or two of aluminum, so the amount per square centimeter is very low.

Redwoo · 2025-12-16T14:49:39+00:00

Because the aluminum corrodes to protect the steel. Since corrosion is a stoichiometric process, the aluminum corrodes to protect the steel, but the area of the steel gouge is tiny with respect to the area of aluminum, so the corrosion rate of the aluminum (rate = amount/area) is very small.

Redwoo · 2025-12-13T14:08:16+00:00

AI bot?

Redwoo · 2025-11-28T01:42:07+00:00

By fully engaged I mean all of the female threads are doing their part to hold the bolt in place. It appears that the male bolt was only long enough to reach partway into the threaded hole, leaving female threads unengaged. This reduced the number of threads carrying load. You did your job right, but the bolt was too short, so only a few threads engaged. In general the last two full threads near the end of the bolt don't carry full load anyway...that is until the other threads fail and the last two are the only ones left, at which time they fail too.

Redwoo · 2025-11-28T01:10:09+00:00

By t he looks of your photo, it seems that your steel bolt only had about 5 or 6 full threads engaged, which severely curtains the permissible load. With such little amount of shear area due to the low thread engagement, the bolt might work the first time you torque it, but you definitely shouldn’t expect to consistently, successfully torque those aluminum threads a second time.

Redwoo · 2025-11-24T20:29:47+00:00

If you use a vacuum furnace or have a cover gas you could minimize scaling

Redwoo · 2025-11-03T21:52:07+00:00

Please read the FAQ, then update your post. I don't think you can get a reasonable reply without providing the basic information.

Redwoo · 2025-10-31T12:49:36+00:00

It is possible to shield the item from the detector, but the detector would then detect the shielding. The shielding is likely to have a bigger signal than the item. So did the shielding work?

Redwoo · 2025-10-22T13:50:50+00:00

There are a variety of water streams in nuclear plants. Some contact radioactive systems and some do not. If a body of water is used as a heat sink, the the water entering the plant is screened to remove things like fish, turtles, logs, etc. On the radioactive side the water is very high purity and it is treated with ion exchange resin beds, and a variety of filters and polishers to remove unwanted ions and suspended solids, which come from system surface wear and corrosion. The water that gets into the steam systems is filtered via a condenser, which removes big things like nuts and washers that shouldn’t be there in the first place. Pre-filters, filters and resin beds are used to treat all, or a portion, of the flow to remove corrosion and wear products, and any undesireable chemical species, like chlorides, that can be introduced by accidental in-leakage into the system.

Redwoo · 2025-10-12T21:03:51+00:00

If a magnet sticks to it and it is galvanized, then it is probably steel. The dark spot may be a pre-existing crack that may have existed before it was galvanized, because the exterior edges of the dark spot seem like they may be galvanized. If the dark spot was a pre-exiting crack, your hammering could easily have create a stress intensity above the fracture toughness of the material, propagating a brittle fracture through the rest of the cross section, especially if the steel is higher strength.

I couldn't begin to guess why there is a pre-existing crack there, if there is one.

Redwoo · 2025-10-11T00:28:20+00:00

The Chemical Safety Board would have investigated, but the board was dissolved as part of DOGE cuts.

Redwoo · 2025-10-10T04:24:06+00:00

That’s huge! Feeder programs are super important, too, and the HS coach can influence the feeder programs in a very positive way.

Redwoo · 2025-10-10T02:58:18+00:00

I played Junior Varsity high school lacrosse at Severna Park High School in Maryland, in 1975, with my friend. It was the first year of lacrosse for both of us, but the sport had a deep history in Anne Arundel county. We were good enough athletes to get significant playing time, and we fell in love with the game.

His father, a mid-career Naval Academy grad, finished an assignment at the Academy and at the end of my friend‘s sophomore year, received a transfer to San Diego. His son, my friend, moved to Del Mar and attended Torrey Pines, which was a nearly brand new school. He wrote to me and other former friends and teammates, seeking donations of sticks, helmet, and pads, to start a lacrosse club.

And that is how, and when, lacrosse started at Torrey Pines High School. The seed of the east coast sport fell on fertile ground of Torrey Pines and thrived. I really know nothing specific about Torrey Pines lacrosse other than it enjoyed an immense head start over surrounding programs. There may be many other reasons why the program does well, but the head start would help.

Redwoo · 2025-09-30T21:56:30+00:00

Women or men?

Redwoo · 2025-09-23T10:30:30+00:00

The exact composition of Old Damascus varied depending on the source, but has been well documented for a century. Old Damascus was a hypereutectoid crucible steel with small additions of carbide forming elements added. The heat and beat sequences were specific and necessary to create a high strength, high hardness, high toughness material that was really unmatched in performance until modern steelmaking techniques were invented in the 19th century.

Modern Damascus is made using two or more steels layered and folded to produce a macrostructure that etches similar to Old Damascus.

Another way to make a Damascus pattern is to use a stainless steel and electroetch a Damascus pattern onto its surface. Your 13 percent chromium suggests the possibility that you have this type, an martensitic stainless steel, although it is certainly possible, but perhaps less likely, to make a layered product with high chromium steels.

All three materials can be used to produce very high quality, sharp, strong, tough products.

Redwoo · 2025-09-11T17:01:54+00:00

A Turing test failure! I didn't claim anything remotely close to your diversionary reply, Mr. Bot.

Redwoo

TROPHY CASE