danm wrote:
I bought a 20 year old j24. The local yard launched and rigged it,
using wooden wedges to hold the mast at the deck opening. These fall
out regularly and I am looking for a more permanent solution. I've
seen a jcd fitted mast block at several online stores, but it seems
kind of pricey at $155. Does anyone have experience with this mast
block, or have any other suggestions?

Yeah, that seems like an outrageous ripoff.

My partner blocks are wood. I think I got them from TPI about 15
years ago. It took a bit of futzing to get them to fit right because
the deck opening isn't centered on the mast step I-beam (this is true
of most boats). Once I got them done right, I slopped a bunch of
layers of epoxy all over them and they've been fine for all these
years.

Whatever you do, you want something better than a bunch of wooden
wedges. Even if you can keep them from calling out, you'll never get
the rig tuned properly like that.