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  • Home-made soldering iron for plastic
    Hello. I made a soldering iron for plastic. I saw a similar company, and that the construction is very simple and you have to pay for welding, it is worth doing. 5mm diameter, 2m of hose, a piece of cable with a plug. The required pressure is 0.5 ÷ 1.5 bar. I used a simple regulator on a triac to regulate the heater. And the cube to connect the wires with the spiral is made of ceramic. Of course, not all plastics can be welded. As electrodes, I use the same plastic that I should weld. I cut strips with a width of 2 ÷ 4mm. After a few attempts, the welding turns out very well. I saw the company one for PLN 140, that's why I did.

    Home-made soldering iron for plastic

    Home-made soldering iron for plastic

    Cool? Ranking DIY
    About Author
    Level 28  
    daduszeryf wrote 1084 posts with rating 195, helped 114 times. Live in city Zambrów. Been with us since 2006 year.
  • #2
    Level 14  
    Post some pics of the "welded" parts. The idea for me is quite practical, although I prefer to use a droplet or other cyanopane glue ... :)
  • #3
    Level 21  
    It's not better to buy the cheapest gas soldering iron?

  • #4
    Level 24  
    Well, it's not better, because the point is not that the "welded" material should start to burn, but that it should melt well enough to bond.
  • #5
    Level 27  
    If someone has parts at home, it may be profitable to assemble such a dynamo, but if you have to buy it, it's better to invest in the cheapest hotair - it will also be useful for other things :)
  • #6
    Level 13  
    I would not compare it to a hotair ... you will not solder anything, but you weld the plastic.
    Here's a similar project with a step-by-step description of how it is done:
    http://www.instructables.com/id/DIY-Hot-Air-Soldering-Iron-using-12-18volts-DC-at-/ " target="_blank" rel="nofollow noopener ugc" class="postlink inline" title="" > http://www.instructables.com/id/DIY-Hot-Air-Soldering-Iron-using-12-18volts-DC-at-/
  • #7
    Level 31  
    you could post photos of the welded elements, and possibly
    video how is the welding process going? I am interesting, ingenious device of this bb. I soldered with a few different soldering irons and there were no interesting effects so this may be a much better solution.
  • #8
    Level 21  
    First of all, plastic is not welded, but it is welded. Secondly, a gas soldering iron at the right distance will give the same results, it will not catch fire.

  • #9
    Level 11  
    Quite an interesting construction. The material is weldable to my friend bb84. But the secret of this technique is the right temperature selection. For example, polylefin materials (polypropylene, polyethylene) should be joined at temperatures of about 170-190 degrees. Higher temperatures will cause degradation of the material or joining with inconsistent bonds (brittleness, brittleness)
  • #10
    Level 13  

    I use HA (Hot Air) from the PT series for welding the plastic, the cheapest on the Allegro are already PLN 150. I buy electrodes because it is recycled, it welds poorly: / Overall a good idea, I saw a similar device on the car market in Słomczyn, the guest sells almost identical welders for PLN 400 :P I don't know what losers buy it, but they value it so much.
  • #11
  • #13
    Level 11  
    Is it possible to weld plexiglass with such a soldering iron?
  • #14
    Level 32  
    Plexiglass sticks ... also with CA adhesives.
  • #15
    Level 24  
    bb84 wrote:
    ... a gas soldering iron at the right distance will give the same effects, it will not catch fire ...

    When heated with hot air, the plasticization process is less rapid than when using a gas burner. Feeling the moment when the plastic reaches the right temperature, at which it will start to bond after adding the "electrode", will not be so easy at the burner. A slight bend with heating and the above-mentioned material will "boil". You might as well say, the same results are achieved by soldering integrated circuits with a gas and HA torch in mobile phones ...
  • #16
    Level 16  
    bb84 - welding is carried out without the use of an adhesive. In the description, the dadusheriff says that as an electrode he uses ... - so it is soldering.
  • #17
    Level 39  
    Gentlemen, let there be no quarrel:

    Welding - joining objects by locally melting the contact surfaces with or without adding a binder.

    Soldering - joining objects with a binder with a melting point lower than the melting point of the material being joined.

    Welding - joining objects by strongly pressing the parts to be joined together with earlier or simultaneous heating of the joined places.
  • #18
    Level 15  
    The design is very cool and inventive. What will you use it for?
  • #19
    Level 28  
    Hi. Thanks for the reviews. I will try to upload photos. I welded a car lamp and a bumper. I've seen soldering irons that have an electrode feeder, but there are also electrodes like me, you can hold in your hand. I deal with welding plastic so that it is not my invention. Welding with a gas soldering iron is much more difficult, I compared. The electrodes are best done by yourself because they do not cost anything. And in my case, I would have to order them by post and I will not order 20cm of plastic. bonding, especially when the welded object is exposed to high stress, the adhesive does not withstand and the welding does not.
  • #20
    Level 15  

    Interesting design, I wonder if it could "burn" wood (e.g. decorating boxes)
    I give 8/10;] and I wish it served for a long time
  • #21
    Level 11  
    dadeusherif - you cannot generalize that welding is better than gluing!
    However, execution to 4+ / 6
  • #22
    Level 21  
    e-bob - some plastics cannot be glued in practice - the connection is very weak. Then welding is undoubtedly a better, basically the only sensible solution.
  • #23
    Level 29  
    Everyone says plastic is asbestos and nobody lets me mold plastic because that's what they say you will die within a week.
  • #24
    Level 31  
    "all"? dead in a week? what am i doing here mate? about 10-13 years ago I should (according to what you write) die and somehow I'm fine, I don't stink, which means that I don't even decompose :D
  • #25
    Level 11  
    10 years ago I did something like this with air flow regulation and instead of an aquarium pump I used a compressor from an old refrigerator.
  • #26
    Level 24  
    plastic is a Czech explosive:> here they weld plastics.

    of the questions are:
    -how do you set the air temperature? it is important not to overheat the material due to the properties of polymers. it would be useful to stabilize the temperature
    - where do you take the binder and whether it is in triangular cross-section rods (such welds are best placed)
  • #27
    Level 24  
    Snickers according to the dictionary, the term plastic is a disambiguation. You might as well "fight" for URAN, which has at least 3 meanings, but that's not what this topic is about ...

    As for the device made by a colleague daduszerif simplicity in every way is in place. Simple, easy to make and functional ... and that's what it's all about. I like it and thanks to the information posted, I can make myself such equipment from "rubbish", which I would probably throw for scrap, and so I sit down and make an invention for which I do not pay heavy money in the store ...
    As for the regulation. It is better to put some "wire gauge" for the heater and the air flow should be set at a constant level. This treatment will affect the outlet temperature. I do not see any sense in regulating the air flow, because the heated material will either be cooled quickly or when it is heated too much, the air momentum will start to bend the bonded material ...
  • #28
    Level 22  
    Hello, first of all, not plastic, but polymer and e-polymer material, I am studying (with greater or lesser effect) the Processing of High Molecular Plastics, so I know a little about it, first of all polymers are welded in this way, e.g. car bumpers (then the binder is a cut piece of a bumper from the invisible places), you can weld in a resistive, capacitive or inductive way, plastics, so this is something else than in this topic, as one of the predecessors wrote, the material should be brought to a state of plasticization because above this temperature, the material degrades, i.e. it becomes brittle and brittle. it starts to burn, but the processing temperature can reach 220 degrees C, e.g. PE, PP, PET, and the construction of 5/5 for me, that's my side
  • #29
    Level 12  
    I bought the cheapest hot air and I am satisfied. welds well and is suitable for soldering, even there is a one-year warranty for the blower motor, unfortunately only 7 days for the heating element, so you have to take care of it.
  • #30
    Level 2  
    Hello. I really like this project, the workmanship as well as the idea itself is amazing. I was looking for something like this for a long time and I thought how to do something like that, and this is what I wanted. I am just wondering if covering small elements, such as ears with car lamps, would not cause problems?