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#1 |
Member
Join Date: May 2010
Location: Apple Valley, MN
Posts: 50
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I need to replace the wires going to my horns and horn relay but my Weller gun doesn’t have enough wattage to melt the old solder joints. What wattage irons do you guys use for these joints?
Thanks |
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#2 | |
Senior Member
Join Date: May 2010
Location: Wisconsin, USA
Posts: 6,758
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Patience my friend, patience ![]()
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"I can explain it for you. However, I can't understand it for you". |
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#3 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 8,708
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This will do it in a heartbeat.
https://www.ebay.com/itm/300W-110V-S...EAAOSwbWpec7Z0 |
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#4 |
Member
Join Date: Jun 2010
Location: Utica, KY
Posts: 70
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If space allows, I use a micro torch, Carefully.
https://www.harborfreight.com/butane...kaAh9HEALw_wcB |
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#5 |
Senior Member
Join Date: Mar 2016
Location: LaGrande Oregon
Posts: 740
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My gun was not heating up enough either and thought it had gone gunny sack. What happened is that the screws that hold the tip in place had loosened up. I retightened them and it works perfectly again......almost threw away a perfectly good soldering iron!
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#6 |
Member
Join Date: May 2010
Location: Apple Valley, MN
Posts: 50
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Thanks! |
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#7 |
Senior Member
Join Date: Mar 2016
Location: LaGrande Oregon
Posts: 740
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Thats always nice when something works out!!
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#8 |
Senior Member
Join Date: May 2010
Location: La Mesa Ca
Posts: 882
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I have two old Wen 250 watt guns, they work great but you do have to keep the nuts tight. Tips are hard to find so I rebuilt my own using the original stubs that go into the gun and braising on 12 gauge solid house wire for the tip.
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#9 |
Senior Member
Join Date: May 2010
Location: Oregon
Posts: 4,613
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Sometimes adding a bit of flux to the joint to unsolder gets it started.
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#10 |
Senior Member
Join Date: Jan 2011
Location: sw minnesota
Posts: 2,690
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make sure the nuts are tight, and the contact area underneath is clean and your old solder gun will work fine.
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#11 |
Senior Member
Join Date: Sep 2016
Location: Melbourne Australia
Posts: 364
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Melt some solder onto the tip of the iron while holding it against the job. The melted solder will act as a heat conductor and help melt the joint.
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#12 |
Senior Member
Join Date: Jul 2010
Location: 36 miles north of Albany NY
Posts: 2,198
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Got one of these at HF, you can pull the tip off and use it as a torch.
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#13 |
Senior Member
Join Date: Apr 2018
Location: Chelmsford, ON Canada
Posts: 380
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One thing not mentioned, is that solder alloys have different melting temperatures. Some alloys, i.e. 50/50 and 60/40 are in the 183 to 212C range, while some may need as much as 300C to melt. Silver solder can need 450C or higher to melt. So depending on the original alloy, the melting temp may be lower or higher.
https://www.petervis.com/Education/S...elting%20point. |
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