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What did you succeeded in doing today ???

  1. #41
    We'reAllBrownNosers African Astronaut
    https://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.
  2. #42
    mashlehash victim of incest [my perspicuously dependant flavourlessness]
    I took a shit on the toilet at the hotel...it looked like a habanero shit
  3. #43
    CandyRein Black Hole
    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
  4. #44
    Nil African Astronaut [the overexcited four-footed chanar]
    I accomplished nothing today, well i did buy a part for a hose bib i'm allegedly going to fix.
  5. #45
    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.
  6. #46
    Thotgirl African Astronaut
    Successfully milked money out of a guy w/o having to take my clothes off..
  7. #47
    Originally posted by Thotgirl Successfully milked money out of a guy w/o having to take my clothes off..

    bj ???
  8. #48
    Thotgirl African Astronaut
    Originally posted by vindicktive vinny bj ???

    Nope catfish scam
  9. #49
    CandyRein Black Hole
    Originally posted by vindicktive vinny central air is how government administer pacifant into your house to tranquilize you.

    and how they listen to everything you say and do.

    Everything I say and do huh?
    I’m pretty entertaining
    Well.. at least they are having a good time 😋
  10. #50
    WellHung Black Hole
    Originally posted by vindicktive vinny central air is how government administer pacifant into your house to tranquilize you.

    and how they listen to everything you say and do.

    At what point did it move beyond a healthy cynicism?
  11. #51
    Originally posted by CandyRein Everything I say and do huh?
    I’m pretty entertaining
    Well.. at least they are having a good time 😋

    you can start entertaining by postimg nude selfies.
  12. #52
    As can you Vincent.
  13. #53
    CandyRein Black Hole



    Rofl!

    Originally posted by vindicktive vinny you can start entertaining by postimg nude selfies.

    Yeah, I have a boyfriend
    Get lost loser! 👅


    Ot

    I’ve succeeded in making a great lunch ,was pretty starved from all this packing ..
  14. #54
    Originally posted by CandyRein


    Rofl!



    Yeah, I have a boyfriend
    Get lost loser! 👅


    Ot

    I’ve succeeded in making a great lunch ,was pretty starved from all this packing ..

    so he now have exclusive rights to your body ?
    The following users say it would be alright if the author of this post didn't die in a fire!
  15. #55
    I 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.
  16. #56
    Helladamnleet African Astronaut [impartially tyrannize that lentinus]
    Cleaned the fuck out of my intake manifold with a wire brush. It looks like a brand new engine
  17. #57
    CandyRein Black Hole
    Originally posted by vindicktive vinny so he now have exclusive rights to your body ?


    Yes so back off creep! 😌
  18. #58
    Originally posted by Helladamnleet Cleaned the fuck out of my intake manifold with a wire brush. It looks like a brand new engine

    congratulations.

    but did you clean the inside or outside of the manifold ?

    homosexuals usually clean the outside only.
  19. #59
    Originally posted by CandyRein Yes so back off creep! 😌

    we did not fought a civil war to free your kind from slavery so that you can be a slave to that man.
  20. #60
    Helladamnleet African Astronaut [impartially tyrannize that lentinus]
    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.
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