Fuse-to-Mast connection Tapered Vs Prismatic

The Axis fuse-to-mast connection works by having a block on the mast fit into a cavity on the fuse- just like Lift, Unifoil, Gong, and several others. For Axis, the bock’s right and left sides are parallel (aka prismatic) and are slightly under 15 mm apart. Axis’s fuse cavity has parallel sides as well that are slight over 15mm apart.

Questions:
Do Lift, Unifoil, Gong, and others with the block-in-cavity setup also have this prismatic setup? Or do they have a tapered connection?
What are the advantages and disadvantages of tapered vs prismatic?

To be 100% clear, I asking about the taper in the connection surface only, not the taper over the length of the mast.

Gong is tapered.

Uni is tapered.
Main reason is to account for tolerances due to production and wear to minmise play.
Are you sure axis is not tapered, never looked at them closely, but doesn’t make much sense to me?

My uni wings can be mounted to the mast in either direction, correctly , and backwards. Doesn’t that mean they’re not tapered ?

Just means its symmetrically tapered.

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Axis is diagonal front and back (tapered) but straight up and down on the sides

Lift tapered. Code tapered.

Cabrinha is tapered

I’m no engineer but tapered is surely better in every way. It’s self tightening even if material is worn away. I’ve heard axis masts have to be repotted occasionally to prevent play/wobble. Taper has been used in Tuttle boxes for windsurf fins for 40 odd years.

Try riding the mast with the trailing edge fwd…did that once by accident, feels sooo weird haha…

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