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<P>More miracles....</P>
<P>Aluminum can be soldered with ordinary resin flux solder with he following procedure:</P>
<P>1 clean aluminum while covered with mineral oil using emery paper</P>
<P>2 with oil still covering the aluminum tin the surface using a soldeing iron and resin-core solder</P>
<P>3 once the aluminum is tinned, it can be cleaned, and processed similar to brass or copper</P>
<P> </P>
<P>It is imperative that the surface is covered with mineral oil until tinned, since any oxygen will </P>
<P>immediately oxidize the surface and AlO2 repells tin solder, while Al and tin are compatible</P>
<P>Gullik</P>
<P> </P>
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<B>On Wed 30/04/08 12:42 PM , Kubajz kubajz@kbx.cz sent:<br>
</P></B>
<BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #f5f5f5 2px solid; MARGIN-RIGHT: 0px">This sounds great. Soldering on zinc was a kind of nightmare for me. I <br>
will try it next week... <br>
<br>
K <br>
<br>
Karel Kulhavy napsal(a): <br>
<SPAN style="COLOR: #666666">> Tartaric acid (weinsaeure, kyselina vinna) is a natural acid </SPAN><br>
<SPAN style="COLOR: #666666">> from wine. It's sold as white crystals for home conserving </SPAN><br>
<SPAN style="COLOR: #666666">> food. </SPAN><br>
<SPAN style="COLOR: #666666">> </SPAN><br>
<SPAN style="COLOR: #666666">> I tried it for soldering instead of colophonium directly in crystalic </SPAN><br>
<SPAN style="COLOR: #666666">> form. It melts on hot soldering iron. Tins heavily </SPAN><br>
<SPAN style="COLOR: #666666">> oxidized copper and nickel plated connector instantly. Then I </SPAN><br>
<SPAN style="COLOR: #666666">> tried some M6 bolt not sure if zinced or nickeled was also </SPAN><br>
<SPAN style="COLOR: #666666">> almost instant, extremely shiny and you couldn't tell the boundary </SPAN><br>
<SPAN style="COLOR: #666666">> between tinned and untinned part. Doesn't work on aluminium foil. </SPAN><br>
<SPAN style="COLOR: #666666">> </SPAN><br>
<SPAN style="COLOR: #666666">> I wonder if someone has this acid at home as well and want to try, </SPAN><br>
<SPAN style="COLOR: #666666">> what experience he gets. </SPAN><br>
<SPAN style="COLOR: #666666">> </SPAN><br>
<SPAN style="COLOR: #666666">> CL< </SPAN><br>
<SPAN style="COLOR: #666666">> </SPAN><br>
<SPAN style="COLOR: #666666">> </SPAN><br>
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