Is this correct or is there still a temperature issue?
312-343C is certainly high; anything greater than 300C is not recommended for soldering electronic components.
In one of their videos, they show the working temp to be 500 (should be in F) which is close to 260C. Common solder melts around 200C and pure tin around 230C.
Excessive temp at the soldering tip will cause rapid oxidation of the tin/lead (it will look dull; the oxide will not melt and float on the liquid metal like a thin skin) that will not help in soldering.
Flux used in soldering is a reducing agent but it actually dissolves away the oxide film (both on the solder iron tip and the item to be soldered) but it has only a limited capacity.
If correct, then I do have a problem but what can it be?
312-343C is certainly high; anything greater than 300C is not recommended for soldering electronic components.
In one of their videos, they show the working temp to be 500 (should be in F) which is close to 260C. Common solder melts around 200C and pure tin around 230C.
Excessive temp at the soldering tip will cause rapid oxidation of the tin/lead (it will look dull; the oxide will not melt and float on the liquid metal like a thin skin) that will not help in soldering.
Flux used in soldering is a reducing agent but it actually dissolves away the oxide film (both on the solder iron tip and the item to be soldered) but it has only a limited capacity.
I must disagree with you.
But the tips still stop taking solder.
I also observed that the tinned spots will start going yellow and then dark agsin in just a minute or 2.
The tips I have are 7 and 8s.
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Weller tips are not cheap (they can cost an arm and a leg) but a tip labelled 6 would have been best.
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In my country price for Magnastat tips is ~7.5€, so it is not "arm & leg" if you do not abuse them they will last for years.
It is relative; the base price in my country is also very similar but with taxes and shipping it becomes close to 18 euro.
But a copper rod, (about 5gm) with a small iron-nickel disk at the fat end and the tip, the business end, electroplated with iron, costing 7.5 euro is incomprehensible.
Soldering irons are very useful in making small holes in plastic boxes; neat and fast. Never had any problem.
By the way, recommended temp for soldering electronic components is close to 300C (at the solder junction). You may allow 10-20C for the thermal resistance (just a guess value). You shall need higher temp if you are soldering heavy items.
still using 60/40 solder and rosin diluted in MEK
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