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What did you succeeded in doing today ???
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2019-05-15 at 7:01 PM UTChttps://forum.allaboutcircuits.com/threads/diy-soldering-iron-tip-the-best-material.105032/
The total thermal resistance is related to the length of the object and it's cross sectional area. The resistance goes up as the length increases and goes down as the cross sectional area goes up. This means a long tip will not solder as well as a short tip, and a very thick metal tip will solder better than a thin tip.
While also looking at the thermal properties of several metals, we find that iron and steel are about 8 times less thermally conductive than copper. This is not very good at all. This means to get the same soldering ability from a steel tip as a copper tip we'd need a tip that is either:
1. 2.83 times the diameter as the copper tip, or
2. 8 times shorter than the copper tip, or
3. 2 times shorter and 2 times the diameter as the copper tip.
Using #3, a tip half the length and twice the diameter will mean the steel tip will solder about as well as the copper tip. So a 1.5 inch long 1/8 inch diameter copper tip is about the same as a 0.75 inch long 1/4 inch diameter steel tip.
Now we turn to the forgotten metal alloy, Brass…
Common brass has thermal resistivity about 4 times that of copper, so it's about twice better than steel or iron to begin with.
To get the same characteristics as that of copper, we could use a tip made of brass that is the same length as the copper tip but has twice the diameter. If we use the same tip diameter we'd have to shorten the tip by four times, so a thicker tip works better.
If we choose to shorten the tip by 25 percent we can get by with a tip diameter of 1.73 times the copper tip diameter. Shortening the tip by 25 percent means a 1 inch tip turns into a 3/4 inch tip for example.
So the best bets here are:
1. Steel, 2 times shorter and 2 times the diameter, or
2. Brass, same length as copper tip with 2 times the diameter, or 0.75 times the length of the copper tip and 1.7 times the diameter of the copper tip.
Just to note, i've used brass for my tips for a long time. The main thing to remember is that it either has to be much shorter than the original copper tip or of greater diameter. If the tip screws in then the larger diameter has to be turned down first to the right diameter for the screw threads.
Hobby stores sell short lengths of brass stock, as well as some hardware stores, which are made of common brass.
I've also used regular soft steel 10 penny nails in a pinch, but they are not as good as brass. They do tap for screw threads easily though, and so does the brass.
Just to note, using a tip that is too long or not thick enough can result in cold solder joints. It's not too hard to test a newly created tip though, just try to solder with it and see if it solders the same as with the copper tip. It should melt the solder just as fast and wet the joint just as well when soldering a typical joint. -
2019-05-15 at 7:17 PM UTCI took a shit on the toilet at the hotel...it looked like a habanero shit
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2019-05-16 at 1:18 AM UTCI’ve successfully sold 2 air conditioning units on buyers market
I had one in my bedroom and one in the living room but the new house I’m moving to has central air so they would just collect dust in the garage ..
A nice Hispanic couple was having the opposite ordeal moving from central air and needed some units
So we all succeeded today -
2019-05-16 at 1:29 AM UTCI accomplished nothing today, well i did buy a part for a hose bib i'm allegedly going to fix.
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2019-05-16 at 10:37 AM UTC
Originally posted by CandyRein I’ve successfully sold 2 air conditioning units on buyers market
I had one in my bedroom and one in the living room but the new house I’m moving to has central air so they would just collect dust in the garage ..
A nice Hispanic couple was having the opposite ordeal moving from central air and needed some units
So we all succeeded today
central air is how government administer pacifant into your house to tranquilize you.
and how they listen to everything you say and do. -
2019-05-16 at 10:58 AM UTCSuccessfully milked money out of a guy w/o having to take my clothes off..
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2019-05-16 at 11:16 AM UTC
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2019-05-16 at 11:17 AM UTC
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2019-05-16 at 6:58 PM UTC
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2019-05-16 at 7:04 PM UTC
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2019-05-16 at 7:05 PM UTC
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2019-05-16 at 7:29 PM UTCAs can you Vincent.
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2019-05-18 at 6:21 PM UTC
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2019-05-18 at 6:27 PM UTCThe following users say it would be alright if the author of this post didn't die in a fire!
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2019-05-18 at 6:34 PM UTCI took my car in to get checked before I try to get my inspection and registration. And I finally got a new debit card. The strip has been broken for forever and the chip lol.
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2019-05-18 at 8:30 PM UTCCleaned the fuck out of my intake manifold with a wire brush. It looks like a brand new engine
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2019-05-19 at 5:20 PM UTC
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2019-05-19 at 5:56 PM UTC
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2019-05-19 at 5:58 PM UTC
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2019-05-19 at 5:59 PM UTC
Originally posted by vindicktive vinny congratulations.
but did you clean the inside or outside of the manifold ?
homosexuals usually clean the outside only.
Both, only the inside didn't need a wire brush. It was actually still pretty clean from when I did the injectors and soaked the fucker in carb cleaner.
