View single post by Herb Kephart
 Posted: Mon Aug 27th, 2012 03:37 pm
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Herb Kephart



Joined: Thu Jul 19th, 2007
Location: Glen Mills, Pennsylvania USA
Posts: 5873
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Interesting story Dave.

And I agree that most of the folks that say, or think to themselves, "I can't do that", could--if they get over the mental block.

I think that I did a piece on soldering way back here on FreeRails--but the two places that folks have problems when they try to solder are.

The objects have to be clean. This means--squeeky, scrubby, you can lick it, no germs clean. File, abrasive paper, Bright Boy abrasive block, CLEAN.

Second place where failure rears it's ugly head is- not enough heat. If the soldering "iron" will melt the solder readily, you have enough TEMPERATURE, but you still might not have enough HEAT (think BTU's) You have to have enough mass in the soldering iron that the heat is transferred almost instantly to the area to be soldered and the solder flows. This is the "secret" to putting one piece on a boiler without two adjacent ones falling off. You can't do much with a 25 watt iron, except solder small wires, A good choice for scratch building would be a 125 (or larger) watt iron.

Don't try soldering with a small torch, or a resistance rig, until you have mastered the use of an iron.

In model building, a torch is most useful for starting small workbench fires.

Herb 



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