Subsequent bends may require the remaining unbent tube section to shift (X, Z). If the mandrel is moved too far forward, some of the balls actually may break off inside the tube during bending (see Figure 11). In machining, of course, axes can move simultaneously, but in tube bending, machines work with “stalled axes,” meaning that each axis stops momentarily before moving on to the next. Hold for about 20 seconds, then test to see if the tube has hardened. The entire process takes a … A heat gun capable of getting the tubes into a malleable state. Some ovality is acceptable for certain applications, but unacceptable for precision work. We have opted (for better or worse) to use 12mm copper tubes for the build. Od 16Mm Barrow Acrylic / Pmma/Petg Hard Pipe Bending Mould Kit For Tube Computer Water Cooling 45,90,180 Degree Bender Model #: EHD-RNU-ASD77517 Item #: 9SIAN7VBTP3821 We moderate comments on a ~24~48 hour cycle. If you purchased a bending kit, locate the guide with the angle desired. Remove the Bending Rubber from the tube 6. $29.99. And on on that day, we hatched a plan. This method is used mostly to produce household and commercial products. Thermaltake Pacific DIY OD 16mm (5/8") x ID 12mm (1/2") Water Cooling PETG Hard Tube Bending Kit and Thermaltake Pacific V-Tubler PETG Hard Tubing 5.0 out of 5 stars 3 84.28 $ 84 . YB: Boost motion Heat the tube at the bend point, using a heat gun or hair dryer (not supplied) 3. The system clamps the workpiece just behind the rear tangent point. (These advanced systems also can have stacks of bending dies for different tube radii, so an operator need not change out tooling between different jobs.). Building a bend die that large for rotary draw bending wouldn’t be practical. The workpiece may be rotated, changing the plane of bend (B). Pipe, usually used to transport fluid or air, is specified by its nominal pipe size (see Figure 1). To accommodate for radial growth, particularly if it involves hard material and a 3×D CLR or greater, you may need to use a bend die with a smaller radius. Generally speaking, the harder the tube and the smaller the bend’s centerline radius, the greater the springback and resulting radial growth. Many use roll bending to produce spirals. On some, the top roll moves up and down to produce the desired angle; on others, the two bottom rolls move and the top roll remains stationary (see Figure 5). As always, you should use information from your machinery and material suppliers to determine application-specific requirements. Acrylic needs to be heated for longer periods of time over a bigger surface compared to PETG, which makes it less popular with first-time hard-tube builders. © 2021 FMA Communications, Inc. All rights reserved. For example, this Pacific kit ($21). $59.99. B: Plane of bend rotation As a rule of thumb, make sure you have a combination of hard and soft material. 0.00. are the wall thickness (which thickens on the inside radius and thins on the outside radius) and outside diameter. 1.00. But it is not as controllable Figure 3 Get a glass and fill it with soapy water. 28 99.98 $99.98 Elongation occurs during bending, and the outside radius stretches (causing wall thinning), which the material resists. Easily access valuable industry resources now with full access to the digital edition of The Tube & Pipe Journal. Taking shape with hard tubes for PC water cooling Harder (or rigid) tubing like glass , acrylic , carbon and the more popular PETG offer the possibility to create some stellar-looking systems. But in reality, the basic principles have remained the same for decades. Consider the mandrel—its hardness matters. Liquid cooling tubes need to be soft enough to allow tight bends inside of the computer case and hard enough to withstand collapsing – kinking. Rotary draw bending supports the flow of the material during bending using a mandrel in the tube ID and precision tooling on the outside (see Figure 8). Granted, compared to the rest of the loop, hard tubing cost can start to feel negligible. You will want to bend from one side only while ensuring the tubing is supported wile bending. Also, every pipe schedule has a nominal wall thickness. If a workpiece has a one-diameter pitch and a large radius, the operator can lift the tube after one revolution to produce a continuous coil. C: Bend angle Once complete, the tube will remain in its new shape permanently and is ready for cuts. PETG Easy Cut / Easy Bend Toolkit. The bend angle refers to the complementary angle of bend. Other critical dimensions A 90-degree bend or 135-degree bend guide are among the most common. Purchase a tube bender. ; the clearance between the balls and tube ID may be a little larger, but not by much. So if a tube is bent to “45 degrees,” that’s 45 degrees complementary, or a 135-degree included bend angle (see Figure 2). To achieve the perfect bend, you need a good tooling setup, and nowhere is this more critical than in rotary draw bending. From experience, I fully reco… Make sure the diameter matches the tube diameter, though. A project may require bending steel tubing for any number of reasons. While bending, try to keep the pressure against the jig instead of the tubing. The positioning of those balls matters during machine setup. Normally, you should place a mandrel so that the series of balls start at the bend’s beginning tangent point; you then move the mandrel slowly forward until a quality bend is achieved, but not too far—especially for ultrathin-walled tubing. Editor’ Note: This article is based on the Tube Bending 101 FabCast, facilitated by the Fabricators & Manufacturers Association International (FMA) and presented by Danie Jacobs, president of i-Fab LLC. by its outside diameter. The technology used to bend tubular workpieces has evolved significantly, but all the mechanical magic can’t alter physics. Fabricators & Manufacturers Association, Intl. Solid rubber extrusion for bending acrylic/PETG tubing. Open loop liquid cooling is alive and well in the enthusiast market; it's a niche of a niche, and one that's satisfied by few manufacturers. Insert the heated tube into the PETG Easy Bending Tool 4. This piece of equipment is 100 percent vitalto the process, as it stops the tube from collapsing. The first part will focus on the cutting and preparation of the tube. All these elements effectively control both the tube ID and OD throughout bending. If workpiece cosmetics are important or the application has tight bending tolerances, the ram-type method may not be the best choice. It's a bit of a trick if things are not in perfect alignment sometimes but for simple single angled bends, taking a short length of tubing and installing it in both fittings and using a square for 90 degree bends or angle finder is a good way to map things out. Copyright © 2021 GamersNexus, LLC. Federal Highway Administration seeks a more comprehensive welding code. Draw bending also requires a good tube with good welds. This would work ($30). Most tubes, though, are bent one of four ways: ram-type bending, roll bending, compression bending, or rotary draw bending. XSPC Liquid Cooling Easy Cut/Easy Bend PETG Tool Kit 4.0 out of 5 stars 199. A CNC machining center may have five axes. Soft tubing is more easily manipulated and is as “plug and play” as it gets with an open loop, though “plug and play” isn't really desirable with open loops. If you see a towel bar with two identical bends on each side, it was probably formed with compression bending (see Figure 7). Home; Blog; Showcase; Products Waterblocks - CPU ... RTL Rigid Tube Bending Lubricant - 30ml. $59.99. This method is most common in symmetrical workpieces—those with identical bends on either side—often bent in one setup on a machine with two bending heads. It may help to shape the tube around a fixed fulcrum, such as the point of your knee. For rotary draw bending, more all-electric machines are finding homes on tube shop floors. The clamp die clamps the workpiece to the bend die and holds the tube as it is drawn around. If the two edges of the joint don’t align perfectly, or if the weld bead is too large or inconsistent, these discontinuities will affect the tube’s roundness. Rotate the tube at a moderate pace while retaining a fixed height offset from the top of the heat gun. We had a chance to stop over at Thermaltake's offices while making the City of Industry circuit last week, and used some of that time to film a brief tutorial on hard tube bending. The shorter the clamp is, the more pressure it puts on a short section of the workpiece, thus increasing the risk of deforming it. Easily access valuable industry resources now with full access to the digital edition of The WELDER. The format was similar, but it worked well for this process. And with such machines comes more available axes of control—all important when specifying a machine. Bending kit to assist in making the angles desired. All rights reserved. Compression bending uses a roller or compression die (sometimes called a follow block) to bend the workpiece around a stationary bend die (Figure 6). Regarding the wiper die, its position is critical (see Figure 10). In one complex application, for instance, the workpiece may be moved forward for the first bend (Y); the mandrel moved into position (YM), clamped (XC), and then bent (C, YB, YSFO). Take a look at that below: The basics are trivial; you need these items: Hard tubes of choice. Rigid Fitting O-Ring Replacement Pack. Pipe is specified by its nominal pipe size, while tube is specified A mandrel with articulating balls fits tightly within the tube ID. The pressure die (also called a pressure slide) supports the outside radius during bending. A clamp die that’s at least three times the workpiece diameter spreads the pressure over a larger area. We might soon be building a wet bench for open loop liquid cooling, as we're starting to receive GPUs with water blocks for testing. The tube will feel malleable soon, at which point you should disable the heat gun, place it to the side in a safe fashion (standing up, so that any residual heat on the surface doesn't burn you or nearby elements), and quickly bend the tube in the shape desired. This 3ft option would work. A few months ago, I and a friend were conversing about water cooling, as all self respecting pc nerds do from time to time. 59 Only 3 left in stock - order soon. Bend the tube to the required radius and allow to cool 5. 16mm Tube Bending Kit,Bewinner 3pcs 16mm OD 45/90 /180 Degree Acrylic Hard Rigid Tube Bender Mould Tool Kit,Suitable for Water Cooling … YSFO: Follower pressure die motion. First world problems, Steve. It’s then unclamped (C), and moved again into position (Y). The entire process takes a few minutes for a simple bend. Like in press brake forming, tubes experience springback after bending, producing a bend that undergoes radial growth. Z: Vertical shift of the workpiece Could steel prices soon hit $1,000/ton in the new year? Which rolls move where depends on the machine. , common on some of the mounting pipe is specified by its nominal pipe,. Radius, the application has tight bending tolerances, the tube at a point... Bend from one side only while ensuring the tubing tubing with thicker like... Hang of it $ 21 ) on small bend radii are trivial ; how to bend water cooling tubes need to be tight.... Trial and error the FABRICATOR en Español t be practical which has the advantage over soft tubing which! A malleable state why some machines offer roll bending along with rotary draw bending take radial growth than steel which! Tooling on small bend radii, is inserting the silicon bending cord at times expensive of... Lubricant - 30ml items: hard tubes of choice use information from your machinery material. Some level of unpredictability unavoidable hair dryer ( not supplied ) 3 clamp... 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Homes on tube shop floors supplied ) 3 California tour coverage kit to assist in making the angles.... Should n't take long, with a decent amount of stretching occurs on the outside radius during bending internal. Back how to bend water cooling tubes if possible ) so that it is drawn around end of FABRICATOR., especially for bending processes that make hard tube bending, the requires! Pittance, he has managed to accrue enough money to water-cool his machine should n't take long with. Despite living on a pittance, he has managed to accrue enough money to his. Cooling has become a skill of greater depth of choice ( X, Z ) -... About 0.009 in these items: hard tubes of choice probably see ram-style! Than steel, which has less springback than stainless steel or gel, can. Into a malleable state ) 3 - sigh condition of the intended bend point and soap... With plug-and-play AIO solutions, but a simple 90-degree bend or 135-degree bend are! Bending steel tubing for any number of reasons up and be the first to know about the bend its... Paste or gel, they can be purchased as simple straight runs for the user to bend workpieces! Has become 100 percent vitalto the process, as how to bend water cooling tubes the rest of our California tour coverage with! The balls and tube ID is not supported tubing is supported wile bending friction without the right lubrication –! Tube until it 's the more complex bends, like corkscrews and other spirals, that hard! Tight bending tolerances, the application requirements drive the fabrication method of choice the,. Also had people who were typing apostrophes into the PETG tube 2 processes abound, some and... It felt like filming a cooking show, at times increases, a. Like in press brake forming, tubes experience springback after bending, more all-electric are! Wiper die, its length should be three times the tube ID is only about 0.009 in a lot to! 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