Movement under the carapace is something that has always bugged me about my previous Jam flies, and after seeing Jannies version 1889218 of his famous jam with a sub carapace made using a craft fur brush got me thinking.

I don’t have a brush maker, and thats a whole new angle I need to learn, but I figured there was a step in the newish Jam designs that had presented the perfect opportunity.

The final few steps involves layering felt and a strip of pre moulded silicon using either polar fibre or (more recently) craft ribbon.  So, why not put some polar fibre or craft fur in between the felt and pre moulded silicon, using some RTV silicon to hold it in?

Of course this makes the final step of wrapping the carapace in mono even tougher, but with some trial and error I got it right.  The result is phenomenal.  Im busy making a few crabs using this exact method with the polar fibre around the entire carapace for more movement.  May I present, peters JAM sandwich:

the sandwich! polar fibre/craft fur between felt and pre moulded silicon

the sandwich! polar fibre/craft fur between felt and pre moulded silicon

thinning the polar fibre/craft fur

thinning the polar fibre/craft fur

Peters Jam sandwich fly

Peters Jam sandwich fly

Peters Jam sandwich fly

Peters Jam sandwich fly

the ultimate test, buoyancy and movement.

the ultimate test, buoyancy and movement.