Hi, I know I will not answer your question but I can post the way I add weight to the pieces I make.
I make a hole to insert a bolt and add its weight to the piece
I use for nº 4 pieces M6x15 bolt for the pawns and a M8x15 for the rest of the pieces.
Is not to much weight but it is very easy to do and the result (for me) is very good.
I "glue" the bolts with putty with silicone base
In some sets I add a 15x1 magnet in order to be able to use my pieces with some electronic chessboards.
And finally the felt is glued with the same putty.
With all this work done I can share my oieces weights:
King (85mm.) : 33g
Queen (76mm.): 31g
Bishop (67mm.):25g
Knight (60mm.): 32g.
Rook (50mm): 27g
Pawn (43mm.): 15g.
But in order to help a little bit more to you I can share the weights of a number 5 pieces I have from chessbazar (the reikjavick set):
K (91mm.) ; 67g
Q (77mm); 50g
B (68mm.): 33g
Kn (61mm): 36g
R (48mm.): 23g
P (45mm.): 18g.
Hope it can help you.
I'm making a chess set and I need to decide how heavy to make each of the pieces. The king is 103 mm (4 inches) tall and I've already weighted it to 90g. Is there any guidance available on how heavy to make the other pieces (I couldn't find any)?
If not, then there's a couple of other things you could do if you would like to help me.
If you think you could advise me for my particular set then there's a photo on Flickr with the tag chess-pieces-hamish-lawson (sorry, as a new user I can't insert an image or link in this post).
Or you could post a photo of your set and list the weights of each piece, and I could use that to work something out.
Thanks.