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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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making u-channel
I need some u-channel that is an odd size. I want the stock to be about
1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Can I make this myself without the use of a brake while still having right-angles? Can I have sheetmetal worker fabricate this cheaply? matthew ohio |
#2
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making u-channel
MatthewK wrote:
I need some u-channel that is an odd size. I want the stock to be about 1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Can I make this myself without the use of a brake while still having right-angles? Can I have sheetmetal worker fabricate this cheaply? What material? What tolerance? How many? That bend radius is a show stopper regardless. I would mill a piece of 1/8 x 3/8 bar and run a 1/4" cutter down the center of one side say, 1/16" deep. You could do that in aluminum or steel or plastic and have nice sharp corners. --Winston |
#3
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making u-channel
On Feb 21, 10:21 am, Winston wrote:
MatthewK wrote: I need some u-channel that is an odd size. I want the stock to be about 1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Can I make this myself without the use of a brake while still having right-angles? Can I have sheetmetal worker fabricate this cheaply? What material? What tolerance? How many? --Winston What Winston said. If you are trying to build a channel with 1/8" long legs, and 3/8" outside dimension, 12" long you may have a problem. The legs are too short for a press brake. A box and pan brake will do the job, but may need a block to act as a female form inside the channel. Tolerance is a big issue. If I needed to make at least 5, with +-.010", I'd make a die set from Ironwood. Cheaper than Aluminum, can be worked with wood tools. An Ironwood die set shaould last for a hundred parts or more. Dave |
#4
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making u-channel
* Winston wrote:
MatthewK wrote: I need some u-channel that is an odd size. I want the stock to be about 1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Can I make this myself without the use of a brake while still having right-angles? Can I have sheetmetal worker fabricate this cheaply? What material? What tolerance? How many? Sorry about forgeting the important parts. Brass or aluminum. Tolerence...maybe as much as 1/32. matthew ohio |
#5
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making u-channel
* Mechanical Magic wrote:
On Feb 21, 10:21 am, Winston wrote: MatthewK wrote: I need some u-channel that is an odd size. I want the stock to be about 1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Can I make this myself without the use of a brake while still having right-angles? Can I have sheetmetal worker fabricate this cheaply? What material? What tolerance? How many? --Winston If you are trying to build a channel with 1/8" long legs, and 3/8" outside dimension, 12" long you may have a problem. The legs are too short for a press brake. A box and pan brake will do the job, but may need a block to act as a female form inside the channel. Thanks for the lead. Tolerance is a big issue. For this project tolerance is not a huge factor. +-.015 or maybe more. If I needed to make at least 5, with +-.010", I'd make a die set from Ironwood. Cheaper than Aluminum, can be worked with wood tools. An Ironwood die set shaould last for a hundred parts or more. matthew ohio |
#6
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making u-channel
I'm stunned, somebody actually read and responded, thank you.
If you decide to build a single purpose die set, of any material. A depression to position the pre-cut blank is required. Ejector pins/holes should be drilled to kick out the part. And, yes, this I'm thinking of a die that could be put on a firm table and whacked with a dead blow hammer a few times. Again, QUANTITY??? Dave On Feb 21, 5:48 pm, MatthewK wrote: * Mechanical Magic wrote: On Feb 21, 10:21 am, Winston wrote: MatthewK wrote: I need some u-channel that is an odd size. I want the stock to be about 1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Can I make this myself without the use of a brake while still having right-angles? Can I have sheetmetal worker fabricate this cheaply? What material? What tolerance? How many? --Winston If you are trying to build a channel with 1/8" long legs, and 3/8" outside dimension, 12" long you may have a problem. The legs are too short for a press brake. A box and pan brake will do the job, but may need a block to act as a female form inside the channel. Thanks for the lead. Tolerance is a big issue. For this project tolerance is not a huge factor. +-.015 or maybe more. If I needed to make at least 5, with +-.010", I'd make a die set from Ironwood. Cheaper than Aluminum, can be worked with wood tools. An Ironwood die set shaould last for a hundred parts or more. matthew ohio |
#7
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making u-channel
On Feb 21, 9:37*am, MatthewK wrote:
I need some u-channel that is an odd size. I want the stock to be about 1/16 inch thick or less and the dimensions would be: 1/8" x 3/8" x 12" Square brass tubing is a common hobby-shop item; my old Small Parts catalog lists 3/8" square with .028" wall, you could saw a length into two channels. Some aluminum extrusions (like for picture frames) could also be suitable. |
#8
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making u-channel
* Mechanical Magic wrote:
I'm stunned, somebody actually read and responded, thank you. Thanks for the help. I post like this on a big newsgroup could easily be over looked. If you decide to build a single purpose die set, of any material. A depression to position the pre-cut blank is required. Ejector pins/holes should be drilled to kick out the part. And, yes, this I'm thinking of a die that could be put on a firm table and whacked with a dead blow hammer a few times. This sounds great. I think I've come acrossed this in my google search but the process was just mentioned and you explained it better. Again, QUANTITY??? 5-10 parts are planned for now. matthew ohio |
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