I know there was a thread about using electromagnetics, but no addressed the fact that there is a magnet on the tetras. If you look at the tetra assembly drawing, it shows a pot magnet on the top side of the tetra. Is FIRST inviting someone to at least try using an electromagnet? thoughts please
maybe…i mean electromagnetics is good in all but you also stick to other things as well… and where is the magnet on the tetra 
From what i can tell on the drawing, it is on the very top connection under the clover thing. Can’t you turn electromagnets on and off?
The tetra assembly drawings I have seen show no magnets. The two “hanging” tetras have are specially modified, with a small stack of washers on one corner. So far as I can tell, the only magnets on the field are part of the corner goals.
Ahhhh…so right. i looked at the drawing again. the pot magnet must be for the hanging tetras. thanks again. (thread can be closed)