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Pipe bending 101 - Page 87

post #861 of 2174
Quote:
Originally Posted by mandrix View Post

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.

That would be me with the parker push fittings. The thread definitely needs to be trimmed for waterblocks, the ones I used on the radiators didn't need to be trimmed but they are very long.

Also those packs generally sold online have a questionable photo of the same type but difference size.
Quote:
Originally Posted by mandrix View Post

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.

I used the UT grade stuff with no issues. It might be your bender? I also straightened the entire roll and let it set for a while. Did you get the crinkling on the interior of the bend? I noticed that happen when I tried to do quick bends. Once I got the hang of it and did slow smooth motions I noticed that I no longer had that issue.




Create looking work guys.

CD69Scorp, love it. Very clean, will look great with some die.

Hammerforged, looked very clean thumb.gif
Edited by deafboy - 3/23/13 at 2:24am
 
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post #862 of 2174
Thread Starter 
Sometimes a spray of silicone on the formers can help with creasing.
Also you need to match the benders with the tube,metric only really works with metric,even a small variation between tube and bender can result in creasing.
If there is a mid match,you could try tape to fill out the former to make it fit,electrical tape is good for this,
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post #863 of 2174
Quote:
Originally Posted by deafboy View Post

That would be me with the parker push fittings. The thread definitely needs to be trimmed for waterblocks, the ones I used on the radiators didn't need to be trimmed but they are very long.

Also those packs generally sold online have a questionable photo of the same type but difference size.
I used the UT grade stuff with no issues. It might be your bender? I also straightened the entire roll and let it set for a while. Did you get the crinkling on the interior of the bend? I noticed that happen when I tried to do quick bends. Once I got the hang of it and did slow smooth motions I noticed that I no longer had that issue.




Create looking work guys.

CD69Scorp, love it. Very clean, will look great with some die.

Hammerforged, looked very clean thumb.gif
The first batch I got bent just fine. I later got another 5 ft coil and yeah, I had the crinkling and it was very likely my fault.
I switched over to annealed tubing and I'm having less hassles. I use a weird combination of spring bender and a non-lever type bender for the 90's and it works out pretty good. (I have arthritis super bad in my hands).
The 1/2" is still a little hard for me to work with but the 3/8" is pretty smooth sailing.
I think I will maybe have one more 1/2" tube to bend and I'll pretty much be through, unless I change something purely for aesthetics.

I did run into one weird problem, and that is a Koolance fitting that the hole in the cap is too small to fit over the tube. Just some production fluke, and I'm debating whether to send it back or not.
post #864 of 2174
Quote:
Originally Posted by mandrix View Post



I did run into one weird problem, and that is a Koolance fitting that the hole in the cap is too small to fit over the tube. Just some production fluke, and I'm debating whether to send it back or not.


I had the same issue with my 10mm pipe and those fittings. It was pretty disappointing to see them adverting both 10mm and 3/8", when the 10mm pipe can't even get screwed in unless you file a bit near the end. Think I'll email them, because it's not right to say it works with it but you can't even screw the nut on mad.gif

Picture is horrid, I'll take a look at the camera thread and figure how to work this darn thing.

Just happy it works after sitting for ~2 weeks idle.
post #865 of 2174
Quote:
Originally Posted by Shogon View Post

I had the same issue with my 10mm pipe and those fittings. It was pretty disappointing to see them adverting both 10mm and 3/8", when the 10mm pipe can't even get screwed in unless you file a bit near the end. Think I'll email them, because it's not right to say it works with it but you can't even screw the nut on mad.gif

Picture is horrid, I'll take a look at the camera thread and figure how to work this darn thing.
Warning: Spoiler! (Click to show)
Just happy it works after sitting for ~2 weeks idle.

Well that is weird. You might want to contact someone. My thought is that these fittings were actually optimized for metric but happen to work with imperial tubing. But if the 10mm pipe won't fit any of the caps (or whatever they are called) then maybe that's not true.

I told PPCs about the one fitting being too small and they passed it on to Koolance. I'm still waiting to hear what Koolance has to say.
I guess if Koolance doesn't pony up a new cap then I've got an $11 paper weight.

I notice that more and more the shops are passing everything on to the vendor to correct. I mean that has worked out OK for me so far but we'll wait and see what happens.
For example if Aqua Computer has a screwup/missing parts etc they are very quick to send replacements out. How Koolance approaches things I have no idea, but the squeaky wheel usually gets the grease so I would not hesitate to contact them, or have the shop you bought them from pass it on.
post #866 of 2174
Update on some tubing biggrin.gif. had to make brackets to hold them at the back of the card thumb.gif ----edit---- yes, the tubing will get painted white also biggrin.gif


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post #867 of 2174
Dang thats pretty slick. Well done.
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post #868 of 2174
Wow it just gets better and better
    
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post #869 of 2174
post #870 of 2174
Quote:
Originally Posted by mandrix View Post

[/SPOILER]
Well that is weird. You might want to contact someone. My thought is that these fittings were actually optimized for metric but happen to work with imperial tubing. But if the 10mm pipe won't fit any of the caps (or whatever they are called) then maybe that's not true.

I told PPCs about the one fitting being too small and they passed it on to Koolance. I'm still waiting to hear what Koolance has to say.
I guess if Koolance doesn't pony up a new cap then I've got an $11 paper weight.

I notice that more and more the shops are passing everything on to the vendor to correct. I mean that has worked out OK for me so far but we'll wait and see what happens.
For example if Aqua Computer has a screwup/missing parts etc they are very quick to send replacements out. How Koolance approaches things I have no idea, but the squeaky wheel usually gets the grease so I would not hesitate to contact them, or have the shop you bought them from pass it on.

I also bought mine from PPCs, I'll be sure to to email Koolance sometime soon about it. I went a little cheaper in those regards, I combined a XSPC male to male adapter and the koolance fittings without the threads. Think it's a $3 savings per fitting. Didn't make a difference though considering they don't work biggrin.gif

Gonna work on my the tubing for the folding computer, just hope I have enough push fits on hand! Aquatuning is murder on shipping unless you spend a lot.

Pretty expensive at $8 for the cheapest fitting, but I'm glad to see they are getting something in for pipe.
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