Hello Friends,
Is there any function of the hole in the centre of a soldering station sponge?
For instance, this one:
https://hk.element14.com/metcal/ac-ys3/sponge-workstand/dp/4950483
I have 2 sponges from 2 different soldering stations. Both of them have big holes in the centre. 
Um... never seen it. I've only seen the little rectangular ones that look like snack crackers when you first open the soldering kit. The hole must be the upgraded version. So much to learn. 
Um... never seen it. I've only seen the little rectangular ones that look like snack crackers when you first open the soldering kit. The hole must be the upgraded version. So much to learn.
