This guide has shown up on NeoGAF in order to help you with your fusion problems.

I have only fused a few items with the graph, but having it all laid out like this is nice to have.

Sweet. This should help my fusion efforts a lot! Thanks for posting this.

It's the least I could do.

If you click on the link to UncleSporky's post, he goes into detail to the specific items that you can craft using his numbering system. There is a list of possible spoilers in the link that he provides on that post. I would give it a look over if you have completed everything. The math is pretty easy to explain and it is a little intense because with proper pre-planning, you can fashion whatever weapon you want using old weapons.

It is just what I needed to get my End-All arm.