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Tips on creating brass scale models
eric2575 -
Sunday, March 22, 2009 - 7:24am
brass | brazing | models | rod | scale | soldering | welding Hi all: I'm a newcomer and would like some advice about tools and methods for working with brass rod and sheets to create scale models from four feet down to six inches. My first model will be a simple boat of about 10" length build with a 1/8" brass rod skeletal frame. I would like the finished boat to be highly polished and would really like to avoid silver joints. Does that mean brazing is my only option? Does anyone have experience with "yellow" solder? If I go the brazing route, will a mini or jeweler's torch do the job? How localized will the brazing spot be? Can I braze a part within an inch of a previously brazed part? What about silver solder, can that be applied without a big sliver spot on the joint? Is silver solder applied with a soldering iron exclusively, or can it also be applied with a torch? I really don't want to file away all the excess solder on every joint. Some of my models will have a large number of seams. Some will have intricate detail in brass, such as a ship's wheel down to about 1/4". I'm thinking that I might have to employ several different methods of joining the brass. All tips and recommendations are welcomed and appreciated. Thank you Eric ![]() Brazing Brass
warren -
Sunday, March 22, 2009 - 10:41am
Eric, I have not tried a jewelers torch for brazing brass. It may work but depends on the size of the tip you use and the thickness of the brass. Remember when brazing brass you will actually melt some of the base metal because it has real close to the same melting temp of the brazing rod. What you will have to watch out for is undercuts around the brazing area. This is caused because the base metal will wash to the not as same temp of the brazing rod. You should be able to braze close to a previous joint once it has cooled some. Also remember that when the brass is hot it will tear so you have to make sure it is supported. It will also be very soft and may sag. The bottom line is make sure that you are using just the right size tip that you can only heat to where you are brazing. www Metalrecipes -- heat and beat to the desired shape, repeat as necessary. |
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Hi Eric, sounds like some
Hi Eric, sounds like some really neat projects. I've always wanted to build a scale model of a boat from scratch. I needed to color match brass and Matt Canaday suggested Harris brand Silicon Bronze Brazing Rod and it worked out great. Really good color match. I was able to braze 1/8" round rod using a TIG machine, 1/16" tungsten electrode, and 1/16" dia silicon bronze brazing rod. I don't have any experience using a jewelers torch, but i'm sure it's possible.
Jake Balcom
Mettle Design
Lincoln, NE