Discussion in 'Project Logs' started by Nexxo, 21 Jan 2014.
Have you not been following this man's work?!?
Oh, it's Redflames... Yeah, you were sarcastic.
Getting notifications about this thread is like your eccentric uncle visiting you once a year. You wish they would stay longer and keep sharing stories about their travels.
To be honest, a thread update here is the biggest surprise that 2020's given us
These last few weeks, I have been mostly bending brass tube.
This part of the project is what gave me the most worry. Brass is tricky. In model engineering forums across the globe, hardened metalworkers, smiths and engineers gather late at night in threads misty with cigarette smoke, their scarred and calloused hands clutching strong liquor, as they relate with hushed voices their trials and tribulations bending brass pipe.
For brass is the trickster god of metals; it does not behave like other metals do. It lures you in with its lovely shine, so easy to cut and mill, but it is a nightmare to forge, bend and shape. It gets harder when you heat it, not softer; tempering it makes it soft. Try to bend brass pipe and, unlike soft, compliant copper tubing, it kinks, and its walls collapse.
Many stories exist: how brass instrument makers freeze water in brass pipe before bending it, to prevent wall collapse. How engineers use sand or clay, or sometimes pour in molten lead (which is then melted out again after the bend). Some use steel bending springs. Some use special jigs. Some invoke the spirits. Some sacrifice a chicken to the metal gods. No method seems more reliable than the other.
So, having browsed a number of these forums, I sourced the most reliable --but still affordable-- pipe bender on the market: the Imperial 370-FH:
Which turned out to be a solid, quality piece of kit. But: will it bend?
Indeed it does. It bent the 12mm OD, 10mm ID brass tube effortlessly and with minimal wall folding:
On the upside, as I said brass cuts beautifully. As such a plumber's tube cutter with its carbide cutting wheel makes for nice, clean and precise cuts:
Especially when you rotate the tube at slow RPM in the lathe. Much neater than using a parting tool (of course you can only do this with straight tubing pieces). The lathe also allows for quick and easy chamfering of the edges of the tube, and polishing it with a grey (soft) scotchbrite pad to get the right brushed finish.
So where are we going with this? Well, combined with Bitspower TruBrass components, we get the following:
The important thing to remember when designing the water cooling loop is:
1. Make it as simple as possible;
2. The order of the components does not matter, as long as the reservoir is the last part of the loop.
Hence as you can see, the loop will go from pump --> GPU --> memory --> CPU --> radiator --> reservoir --> pump.
More to follow...
...and so does @Nexxo
This is one of my downfalls, always too complicated with pipes up the wazoo and out the oozaw.
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