/diy/ - Do It Yourself

>>1991751
>399C
300C will still melt the brand-name plastic on mine (bought Amass brand from aliexpress, they're not much more expensive than nobrands). The higher your temperature, the faster you'll be able to get in and get out. The joint didn't form because you didn't have good thermal contact to both the cup and the wire. Might be difficult if you've got a conical tip, but a screwdriver tip or similar can make thermal contact with both at the same time. I find having half a mm thick layer of (fresh) molten solder on my tip helps improve thermal contact greatly.

>>1991774
A field-effect transistor is what you're after, a MOSFET in particular. Something like pic-related.