Soldering to pots

Natman

New member
Hey guys, I know it has come up but what's the consensus for when solder won't stick to the back of a pot for grounding?

I am using a Bourns pot for the first time and have never had this much trouble before!

thx
 
Re: Soldering to pots

scuff up a small area of the back with sandpaper and try again.
 
Re: Soldering to pots

Get a small tin of flux too - it makes quite a difference as to how easy, or otherwise, it is to get a good quality solder joint.
 
Re: Soldering to pots

+3.

Scuff the area, use flux properly, and heat the s**t out of it. Also make sure you've got some solder on the tip of the iron to make better contact with the pot. It also helps to have a variable power iron so you can turn the heat up for jobs like this, but turn it down when working with smaller, heat-sensitive components.

It takes a lot of practice to do this without damaging things, though. Best to practice on one that you don't intend to use.
 
Re: Soldering to pots

I use 800 grit sandpaper on the back of the pot, and I tin the lead and the pot with flux-core solder first. I try not to overheat the pots, though all surfaces should be hot prior to introducing the solder. Not overheating the pot is only super important with push/pull pots, as the piggybacked switches will often contain plastic parts. Ask me how I learned that...
 
Re: Soldering to pots

scuff up a small area of the back with sandpaper and try again.

+1. Solder also sometimes seem to stick better on the rim and edges than the flat back. I used to use a soldering iron to do grounds on pots, but now use a soldering gun, which is hotter, and it sticks much better with the extra heat.
 
Re: Soldering to pots

One other thing that may not occur to all, is to 'tin' the back of the pot with solder before you try to attach a wire to it.
 
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