I like the herring head mold. I don't like the inserts it takes that cost almost $0.10 each. I found a workable alternative that only costs about $0.01 apiece in the craft aisle at Wal-Mart. No mold modification required!


Here's a pic showing the official insert on the left and the replacement on the right:

They are called 2" eye pins and come in the form of a loop on the end of a 2" wire. The normal use is for making jewelry and they cost about $3.50 for 315 pins. Snip the wire about 1/2" up and put a short bend in the end to keep it from falling out of the head. It's plenty strong enough for a spinner blade. Only downside is you will need a split ring as the loops are closed. I use ball bearing swivels with split rings on them, so it works out OK for me.


Here's a pic showing the official insert on the left and the replacement on the right:

They are called 2" eye pins and come in the form of a loop on the end of a 2" wire. The normal use is for making jewelry and they cost about $3.50 for 315 pins. Snip the wire about 1/2" up and put a short bend in the end to keep it from falling out of the head. It's plenty strong enough for a spinner blade. Only downside is you will need a split ring as the loops are closed. I use ball bearing swivels with split rings on them, so it works out OK for me.