[Elecraft] antistatic mat for K3 assembly

[Franki ON5ZO]

With my K3 anticipated less than 4 weeks (as much fingers crossed as 
anatomically possible) I am preparing the assembly line.

I don't have an antistatic mat but do have a bracelet available with a 
crocodile clamp lead. Would it be wise to use a big aluminum plate to 
replace the antistatic mat and clamp the crocodile on that sheet?
I found a antistatic thingy at an online salespoint for 80 Euro (+50$) ex 
S/H, so I'm a bit reluctant because I have no further use for such a thing.

TNX for the input and 73,
Franki ON5ZO
http://on5zo.spaces.live.com/