please advice any soldering iron (30w/60w/80w)
for this tips,

http://www.monstermarketplace.com/industrial-electronics-and-supplies/t18-cf4

cheap iron

<SNIP>

 

30watts is about right. I would imagine that with electronics you run the risk of damaging your delicate components with one as high as a 60watts. As for quality it is often best to invest in something of decent quality otherwise you will endlessly end up replacing the cheap ones. Make sure you get a proper holder for the soldering iron too not just a hook.

Also when I clicked on your link I got security warnings telling me it is an unsafe website. http://www.mywot.com/en/scorecard/monstermarketplace.com

 

thanks
SIR
i want to purchase soldering iron with said tip, from new york,

 

Just a quick point. When you are soldering if you leave theiron in its cradle for a while as you are sorting your components its overheats and spoils your nice tinned point. A good solution for this is to incorporate a limit switch on your cradle with a diode wired across it.
This has the effect of cutting off half a cycle and therefore reducing the power to your iron. the instant you pick it up you are on to full power.
Works very well in practice.

 

30watts is about right. I would imagine that with electronics you run the risk of damaging your delicate components with one as high as a 60watts.

Be very careful with this line of thinking.

This is a great breakdown of what wattage actually means to the guy using it: http://store.curiousinventor.com/guides/how_to_solder/select_iron/

That said, you are right, 30W is probably sufficient for most small tasks.

As for the OP: you are listing tips for old 936 and their clones. There are a ton of them out there (one of the most cloned soldering irons in the world). Probably one of the cheapest is this one from circuit specialists:

http://www.circuitspecialists.com/soldering-station.html