Core wood thickness 3pcs longbow

[jtwalsh62]

I am looking to get a 64" shooting for 45# and
64"@ 50#  
3 lam of maple 050 glass
What do yall think the core wood thickness should be

[GREG IN MALAD]

Need more info to answer your question.
How long is the riser and the wedges? How wide is the limb going to be and what rate of taper do you plan on using? Also a photo of the form would help.

[Dmaxshawn]

Need more info

shallow or pronounced profile
riser length