Hi all, I'm going to be making a flat carbon fiber practice panel with a 2 mm soric tf core and I'm wondering if it is necessary to chamfer the edge like I've seen in some literature? Going to be using a standard 2x2 twill weave to cover the core.

The chamfering seems common with more solid foam cores but just wanted to check before I finalize my plan. Thanks!

If it's a part with cosmetic clear carbon surface, yes. Soric core leaves a visible edge on the surface, chamfering the core reduces it significantly. but with thin skin layups it's hard to avoid completely.

It's also difficult to chamfer Soric nicely, it tends to tear too easily. It's also somewhat pointless given the flow channels will print just as much as the unchamfered edge will.

Its easier to butt up reinforcement to the edge of the core to make up the core thickness. Obviously makes the part heavier though.

Soric tf doesn't have flow channels. To chamfer soric I just cut it with a very sharp knife at a steep angle.

Ah of course, I missed that it was the TF version. Much better product, although still extremely heavy. 

I still feel any Soric core isn't worth chamfering. It's better and easier to build up the reinforcement to the same thickness as the core. Or taper it off if you dont need the rigidity at the edge of the panel.

I'm making the panel over sized and plan to trim it back to my specific dimensions so ultimately the chamfered edge in question is going to be cut off.

Does that change the recommendations for or against chamfering the edge?

Yes. Don't bother with chamfering. This is only a cosmetic issue