[Amps] Grid grounding material?

[paule at sfu.ca (paule@sfu.ca)]

I am getting ready to directly ground the grids of the 3-500's in one of my 
SB-220s'.I have some copper strap that I was planning on using, but was 
wondering if I should tin the whole piece to prevent possible corrosion issues 
between the aluminum and the copper? 


cheers, Paul - VA7NT ex VE7CQK - email: paule@sfu.ca
"Those who hear not the music. . . think the dancers mad."