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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Brass all thread
SteveB writes:
It's for a pool filter ... Don't use brass in a swimming pool. You want 316 stainless, hidden at your local chandler. |
#2
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Hi Richard,
Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave |
#3
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Dave, I can't do that wrote:
Hi Richard, Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave Corrosion. Better not to have it come apart in the wee hours. Even more miserable if you are paying an hourly rate to the guy that hast to get it apert, a few years down the road. Cheers Trevor Jones |
#4
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Brass all thread
"SteveB" wrote:
I am having trouble finding this. I need 1/4 - 20 in two 24" lengths. I may have to bite the bullet and get it online if I can't find it locally. Any ideas to what sort of business may have this? It's for a pool filter, and when I ask, a glazed look comes over their eyes. My local Lowe's carries stainless. [which is what i would use on a pool- I think the chlorine eats brass] I found out when I grabbed a couple pieces of threaded rod and nearly had a heart-attack when the girl rang it up. The brass is only $7 at mcmaster.com - If you're stuck on brass they might be your best bet. [I usually find it quicker to order from them than wait until I remember to pick up something while I'm out.] Jim |
#5
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Brass all thread
I am having trouble finding this. I need 1/4 - 20 in two 24" lengths. I
may have to bite the bullet and get it online if I can't find it locally. Any ideas to what sort of business may have this? It's for a pool filter, and when I ask, a glazed look comes over their eyes. Steve |
#6
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Brass all thread
Dave, I can't do that writes:
Don't use brass in a swimming pool. Why not? Pool water will slowly dissolve brass, so it won't last mechanically. Whatever chemistry you use to sanitize your pool makes this inevitable. Dissolved metals in pool water redeposit on the pool surfaces and stain them. |
#7
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Brass all thread
Dave, I can't do that writes:
Don't use brass in a swimming pool. Why not? You might also consider why metal pool fixtures are always stainless, not brass or zinc like freshwater boat hardware. |
#8
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On Feb 18, 6:30*pm, Richard J Kinch wrote:
Dave, I can't do that writes: Don't use brass in a swimming pool. Why not? You might also consider why metal pool fixtures are always stainless, not brass or zinc like freshwater boat hardware. Even tap water damages brass, by slowly leaching out the zinc. You don't see it because the copper holds its original shape. That's why old faucet washer screws break so easily. Jim Wilkins |
#9
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Brass all thread
Richard J Kinch wrote:
Dave, I can't do that writes: Don't use brass in a swimming pool. Why not? You might also consider why metal pool fixtures are always stainless, not brass or zinc like freshwater boat hardware. You mean cheap bass boat hardware? Everything on my boat is stainless. Richard |
#10
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Brass all thread
Someone I must have plonked wrote:
Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave The all thread holds the plastic DE filter assembly together. I have used shorter sections of brass with aluminum and steel joiners, but they corrode into unrecognizable blobs in one season. The brass is unchanged. Why not use brass? I'm not making a brass float or anything that big. Steve |
#11
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----- Original Message -----
From: "Trevor Jones" Newsgroups: rec.crafts.metalworking Sent: Monday, February 18, 2008 5:12 PM Subject: Brass all thread Dave, I can't do that wrote: Hi Richard, Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave Corrosion. Better not to have it come apart in the wee hours. Even more miserable if you are paying an hourly rate to the guy that hast to get it apert, a few years down the road. Cheers Trevor Jones apparently chlorine eats stainless too. i had to replace a stainless rod (maybe 1/2" by 10") in my pool filter. it had holes through it like swiss cheese. was amazing to look at. (i figured the holey parts were where there had been some contamination in the process of making the stainless.) (but i'm sure stainless lasts longer than brass.) b.w. |
#12
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Bronze ? - Si-Bronze ?
Plastic ? Martin Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal. NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com/ SteveB wrote: I am having trouble finding this. I need 1/4 - 20 in two 24" lengths. I may have to bite the bullet and get it online if I can't find it locally. Any ideas to what sort of business may have this? It's for a pool filter, and when I ask, a glazed look comes over their eyes. Steve |
#13
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The Chlorine dissolves the Zinc and then the left over copper is spongy.
Spongy copper falls apart. Think sinks that were brass - the brass stems that held the washer often fractured and cracked and was replaced. The seats were replaceable. Nowadays the new fangled sinks don't have washers. Such an easy life. Martin Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal. NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com/ Dave, I can't do that wrote: Hi Richard, Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave |
#14
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I have some bronze portholes that were in tropical water for 50 years.
There is very nominal spotting of green in places. More coral than green. They are Naval Bronze. A Very special alloy. Martin Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal. NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com/ cavalamb himself wrote: Richard J Kinch wrote: Dave, I can't do that writes: Don't use brass in a swimming pool. Why not? You might also consider why metal pool fixtures are always stainless, not brass or zinc like freshwater boat hardware. You mean cheap bass boat hardware? Everything on my boat is stainless. Richard |
#16
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Brass all thread
"William Wixon" wrote in message ... ----- Original Message ----- From: "Trevor Jones" Newsgroups: rec.crafts.metalworking Sent: Monday, February 18, 2008 5:12 PM Subject: Brass all thread Dave, I can't do that wrote: Hi Richard, Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave Corrosion. Better not to have it come apart in the wee hours. Even more miserable if you are paying an hourly rate to the guy that hast to get it apert, a few years down the road. Cheers Trevor Jones apparently chlorine eats stainless too. i had to replace a stainless rod (maybe 1/2" by 10") in my pool filter. it had holes through it like swiss cheese. was amazing to look at. (i figured the holey parts were where there had been some contamination in the process of making the stainless.) (but i'm sure stainless lasts longer than brass.) b.w. Now you got me going. I live in Utah. This is for a pool in Las Vegas. If I was there, I'd braze the four rods into two two foot long rods. Now, I may have to buy some here, braze them together and take them there. During disassembly for five years now, I have only had a problem with the couplers, not the nuts. They spin right on and off easily. Must be some special kind of brass. Will let you know how this R&R goes in a few weeks when I do the yearly DE filter disassembly, clean and recharge. Steve |
#17
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Brass all thread
"William Wixon" wrote in message ... ----- Original Message ----- From: "Trevor Jones" Newsgroups: rec.crafts.metalworking Sent: Monday, February 18, 2008 5:12 PM Subject: Brass all thread Dave, I can't do that wrote: Hi Richard, Don't use brass in a swimming pool. Why not? I don't have a swimming pool but would like to log it for future reference. Dave Corrosion. Better not to have it come apart in the wee hours. Even more miserable if you are paying an hourly rate to the guy that hast to get it apert, a few years down the road. Cheers Trevor Jones apparently chlorine eats stainless too. i had to replace a stainless rod (maybe 1/2" by 10") in my pool filter. it had holes through it like swiss cheese. was amazing to look at. (i figured the holey parts were where there had been some contamination in the process of making the stainless.) (but i'm sure stainless lasts longer than brass.) b.w. Don't forget that "stainless" refers to a family of alloys, the characteristics of which vary rather widely. You need to choose the proper one for your application. Whether what you need is available as a threaded rod is, however, another matter... Jerry |
#18
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Brass all thread
"DanG" wrote in message ... If you use stainless, make very sure you use anti seize. Stainless can be vicious about galling. One of the reasons I want to stay with brass. Even with the couplers corroding, just some brushing cleans out the threads. Would be nice to find two of the right length, or go get two and braze together. Will go to the welding store tomorrow. Might even be able to cut some short pieces of 4" or so and then braze them on the ends of plain brass rod to have just enough threads for the nuts and washers to hold it all together. There's a hundred ways to cook a poodle. But it all tastes like chicken. Steve |
#19
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Brass all thread
On Feb 19, 12:31*am, "Jerry Foster"
wrote: Whether what you need is available as a threaded rod is, however, another matter... Jerry I bought a few pieces of the largest size available of gas/TIG welding rod in steel, aluminum, brass and stainless, for a whole lot less than it costs in a hardware store. If you know the length, buy some 316 rod and thread the ends. It should last until crushed by the next ice age. 1/8" = #5, 9/64 = #6, 5/32 ~= #8, 3/16 = #10. Jim Wilkins |
#20
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Brass all thread
In article ,
"SteveB" wrote: One of the reasons I want to stay with brass. Even with the couplers corroding, just some brushing cleans out the threads. Would be nice to find two of the right length, or go get two and braze together. Will go to the welding store tomorrow. Might even be able to cut some short pieces of 4" or so and then braze them on the ends of plain brass rod to have just enough threads for the nuts and washers to hold it all together. Try Bronze (even harder to find); it has passes the 2000 year immersion in salt water test Free men own guns - www(dot)geocities(dot)com/CapitolHill/5357/ |
#21
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Brass all thread
www.mcmaster.com has 36" 316SS for $8.59 in 1/4-20, also brass ($10.14),
silicon bronze ($49.74), titanium ($74.16), and monel ($81.25) :-). They have 24" pieces, too, but in fewer materials. A good place to check chemical compatibilities is: http://www.coleparmer.com/techinfo/chemcomp.asp Looks like bronze and 316SS beat brass for sodium hypochlorite (but your pool better not be anywhere near 20%-)) and salt water. -- Regards, Carl Ijames carl dott ijames aat verizon dott net (remove nospm or make the obvious changes before replying) "SteveB" wrote in message ... I am having trouble finding this. I need 1/4 - 20 in two 24" lengths. I may have to bite the bullet and get it online if I can't find it locally. Any ideas to what sort of business may have this? It's for a pool filter, and when I ask, a glazed look comes over their eyes. Steve |
#22
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On 2008-02-19, SteveB wrote:
[ ... ] Now you got me going. I live in Utah. This is for a pool in Las Vegas. If I was there, I'd braze the four rods into two two foot long rods. Now, I may have to buy some here, braze them together and take them there. During disassembly for five years now, I have only had a problem with the couplers, not the nuts. They spin right on and off easily. Must be some special kind of brass. Perhaps a bronze, called "naval brass". That tends to be an alloy which can handle chlorine corrosion, sicne the sea has lots of NaCl. :-) Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#23
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DoN. Nichols writes:
That tends to be an alloy which can handle chlorine corrosion, sicne the sea has lots of NaCl. :-) Chlorine as chloride (what's in seawater) is not chlorine as hypochlorous acid (what's in a swimming pool). Chlorinated swimming pool water will (slowly) dissolve even gold. |
#24
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"DoN. Nichols" wrote in message ... On 2008-02-19, SteveB wrote: [ ... ] Now you got me going. I live in Utah. This is for a pool in Las Vegas. If I was there, I'd braze the four rods into two two foot long rods. Now, I may have to buy some here, braze them together and take them there. During disassembly for five years now, I have only had a problem with the couplers, not the nuts. They spin right on and off easily. Must be some special kind of brass. Perhaps a bronze, called "naval brass". That tends to be an alloy which can handle chlorine corrosion, sicne the sea has lots of NaCl. :-) Enjoy, DoN. I'll go out on a limb here. My SWAG is that because it is inside a pool filter, that it was made with chlorine corrosion in mind. Ergo, a marine brass, or some particular type of metal that still looks good today after probably twenty years of use. Even if I have to reweld the ends on every few years, that's better. The problem is that when you lift the whole assembly out, it is caked with DE, and if one of those cuts loose, about fifty plastic parts go flying, some with self destructive results. After sitting in there a year unmoved, it is a little tempermental. Had to replace three panels on the first cleanup. Luckily they still make the parts, but it would have been a lot simpler if it had just held, and there was no damaged parts. Just a guess. |
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