So while we're on the topic, shall we talk about the different options for each of the options?
Such as, for a two piece, sleeved takedown you can make the sleeve from rawhide, steel or fiberglass.
Also two piece (or four, if you're Fiddler 49) can be accomplished by overlapping two limbs at the handle, putting pins through and binding tightly.
For three piece, there is of course bolting the limbs to the riser. But there's a lot of ways to do this I'm sure, though I don't know the names or options for fasteners. I'm interested to hear what people have used. I did recently successfully resuscitate another thread where tee-nuts were used to good effect.
edited to add: Of course there is also the option of having bolts go right through the riser too.
Dave