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Old 04-27-2014, 01:43 AM   #11 (permalink)
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Just a guess, but maybe they listed it as "not-bendable" because it changes the diameter of the tube wall, thus not being able to withstand 3k psi anymore. I think with the low PSI you're putting through it though, it shouldnt be a problem.
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Old 04-29-2014, 12:28 AM   #12 (permalink)
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Macroline is 1/4". it's not just a paintball thing, those 1/4 inch "push in" style fittings are used all over the place. I never thought to stick metal tube in there... I can't believe we are just discovering this now
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Old 04-29-2014, 04:11 PM   #13 (permalink)
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Originally Posted by diesel_fireman2001 View Post
Figure I would update this. The Mcmaster brass tube posted above bent just fine using a brake line bender. Fits perfectly into Macro fittings and doesn't leak. I will be bending tube for all of my guns. Some of the tube will get powdercoated black.
how tight can you bend it? say you were to bend that on your marker to emulate a geo 3.1 ? so that the brass line goes straight up (perhaps under the grips), bends at the trigger guard and follows that into the reg? I had thought of doing that with an ion but I was sceptical I could find something that would bend that far.

also Ratfink, 3K psi is the pressure of the tank, usually you have HP@800-850 and LP@300-400 psi regs on the tanks. Unless you're running CO2. I think.
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Old 04-29-2014, 05:09 PM   #14 (permalink)
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For Minimum Bend Radius the general thumb rule for bending tubing is R = 3 X OD of Tubing [up to 1/2" OD] so for 1/4" OD tubing R = 3/4"



You can bend tighter then that but it should be Mandrel Bent.
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Old 04-30-2014, 01:57 AM   #15 (permalink)
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The brass tubing is a slightly tighter fit than Maco line. Takes a little more force to push into the fittings. Which means a tighter oring fit. I would suggest putting a slight chafer on the ends of the tube so when they are pressed into the fittings, it won't tear up the oring.

Mastercam has two ID for the 1/4in tubing:
- .12 ID with .065 Wall thickness
- .186 ID with .032 Wall.

I bought both, and the .186 ID is much easier to bend.
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Old 08-18-2014, 02:52 PM   #16 (permalink)
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diesel, your PM's are full. Would you mind clearing a few?
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Old 08-18-2014, 06:53 PM   #17 (permalink)
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can someone take pity on this poor soul. I cant ever find a thing on the McMaster carr website. Can I get a link to this tubing? Is there one to fit my 5/32 and my 5/16 fittings also? im excited about this one
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It was a simple question....I thought.
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Old 08-18-2014, 07:54 PM   #18 (permalink)
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Originally Posted by zacgodwin View Post
can someone take pity on this poor soul. I cant ever find a thing on the McMaster carr website. Can I get a link to this tubing? Is there one to fit my 5/32 and my 5/16 fittings also? im excited about this one
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It won't let me link to the exact page, so click on Easy-to-Form 260 Brass. The one diesel_fireman2001 says is easier to bend is on the top left, $5.61 for 1 foot.
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Old 08-19-2014, 07:49 PM   #19 (permalink)
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Thank you so much
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It was a simple question....I thought.
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Old 08-21-2014, 09:43 AM   #20 (permalink)
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Quote:
Originally Posted by diesel_fireman2001 View Post
The brass tubing is a slightly tighter fit than Maco line. Takes a little more force to push into the fittings. Which means a tighter oring fit. I would suggest putting a slight chafer on the ends of the tube so when they are pressed into the fittings, it won't tear up the oring.

Mastercam has two ID for the 1/4in tubing:
- .12 ID with .065 Wall thickness
- .186 ID with .032 Wall.

I bought both, and the .186 ID is much easier to bend.
A chamfer tool for use on brass cartridge cases for handloaders would be perfect for that task.
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