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Pipe bending 101 - Page 78

post #771 of 2174
Quote:
Originally Posted by Krusher33 View Post

Do keep us updated on that! BTW are you using it on the copper or the pre-chromed stuff you found?
No, I ditched the chromed pipes for plain copper, then I sand them lightly with 2000 grit wet/dry and polish with Brasso. All of the 3/8" was bent with the Superior Tool bender from Lowes.

All of the tubing I've installed so far is 3/8", all on the "back end" of the loop. On the "front end", or res to pump > I want to go with 1/2", which is only 3 lines. All the tubing to/from the 4 pedestal radiators is soft tubing from the bulkhead fittings in the bottom of the case and I will not be changing that.
post #772 of 2174
So not trying to steal anything on here but I have started my Build Log and would greatly appreciate all the advice I can get in water cooling and components. I know I will be piping for sure. biggrin.gif
post #773 of 2174
I think I saw someone here is using these, but thought I'd post just in case someone was interested. This is listed as a Parker push fitting, 3/8" tubing size, 1/4" BSSP thread size. As is the case with a lot of industrial type fittings, the actual internal size dips to about .256".
6-1/4PLPHBF4-B

Although I could not find any specs on the thread length, I believe this is an example of a fitting that has a long thread length that would require either using spacer(s) or trimming off the excess threads.
Typically I see these being sold in a 10 pack for roughly $90 US retail.

Also in the Parker catalog 3501-e there is listed on the same page push fits for metric tubing as well, for example 12mm tubing, 1/4" BSSP thread.
_______
Moving along to the Mettleair fittings which have been discussed before, they are available for 3/8" tubing, 1/4" BSSP threads. The actual internals dip down in size somewhat, as they are set up so as to be tightened internally with a 6mm hex wrench.
However as a test I set one of the fittings up in a drill press and successfully bored out the bottom of the fitting to just under 3/8". I did not go quite to a full 3/8" as leaving a slight ridge in the fitting prevents the tubing from being inserted all the way through the fitting, which is not necessary.
post #774 of 2174
I'm a little bummed about some of the bends I made on the recent 3/8" tubing I bought. Every time I bend a 90 I get some crinkling on the inner radius. I did not have this problem with the earlier tubing. Both were bought at the same place (Lowes) and made by Nibco. I ended up going through 4 foot of a 5 foot coil and still got the crinkles in the bend.
Same bending tool used for both. Strange, I can only assume it has something to do with the tubing itself.

Lowes has some type "L" in a 10 foot coil I may try, although it's double the price of the UT grade it would be worth it to get rid of the crappy bends.

Also I bought some type "L" straight 1/2" pipe for a few pieces when my little 1/2" bender gets here, I'm hoping it bends OK (the pipe).

Starting to wish I had stuck with the chromed pipe, it bent so nice although the chrome had some crazing on the 90's and I can't find it in the 1/2" size for the few pieces I'll need.
post #775 of 2174
Mandrix,


Can we get some pics of the bends to see what is occuring exactly. Also if I recall from memory correctly the Supply lines used from lowes are a lot thinner than the 3/8" tubing especially if its straight tubing and not the soft coil tubing. You might be holding your tongue right. rolleyes.gif I have faith you will get the bends your seeking. thumb.gif



Edit: Thinner meaning thinner walls... Its early. doh.gif
post #776 of 2174
Thread Starter 
Mandrix,is the pipe shifting when you bend it?
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post #777 of 2174
Quote:
Originally Posted by kpforce1 View Post

Ok so for those interested in the Epoxy paint I used here are the results.... it looks powder coated biggrin.gif The last two are the paint I used with part #
Warning: Spoiler! (Click to show)


Hey, if you have any reject pipe with that paint on it, would you do me a solid and try sanding it a little or something? I like that paint idea a lot, but would much rather have a matte finish to my piping. That would be awesome.
    
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post #778 of 2174
Quote:
Originally Posted by Seredin View Post

Hey, if you have any reject pipe with that paint on it, would you do me a solid and try sanding it a little or something? I like that paint idea a lot, but would much rather have a matte finish to my piping. That would be awesome.

You're in luck thumb.gif I had something land on my beautiful paint job so I have to sand it anyway frown.gif. I had to wait for days to ensure the paint had cured though. Maybe I can do this tonight and see how it turns out. You could always use white Plastidip on your tubes instead biggrin.gif.... It would be waaaaay easier to get that matte white finish you are looking for thumb.gif
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post #779 of 2174
Quote:
Originally Posted by Drierwor View Post

Mandrix,


Can we get some pics of the bends to see what is occuring exactly. Also if I recall from memory correctly the Supply lines used from lowes are a lot thinner than the 3/8" tubing especially if its straight tubing and not the soft coil tubing. You might be holding your tongue right. rolleyes.gif I have faith you will get the bends your seeking. thumb.gif



Edit: Thinner meaning thinner walls... Its early. doh.gif
This is coil tubing, utility grade but it's the same as I started with.
Quote:
Originally Posted by B NEGATIVE View Post

Mandrix,is the pipe shifting when you bend it?
I don't think so.....I just didn't have that problem before, so I'm puzzled.

I can't see anything that's changed with the bender itself.....but still, you may be on to something. I'll keep a closer eye on the tubing as I bend it when I get some more.
Thanks.
post #780 of 2174
Mandrix, did you try to anneal your pipes? A simple gas torch would do the trick. I'd give it a try ut being copper, it should take a bit of time.
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