I’ve actually got a compound riser press with two rollers, boat winch, and cable. I used it a lot in the mid 90’s tweaking speed bows with different cams and limbs.
But…those bow presses are designed for compound bows that are around 36” axel to axel and still somewhat look like a bow.
You would think it would work on traditional bows, but it doesn’t. It puts too much pressure mid limb and they blow up…. Of course I learned that the hard way when I first started building bows.
This thing wouldn’t work on the newer compound bows either with short parallel limbs. It’s pretty much obsolete now and collects dust.
Bue Maker, I use the same 5/16-18 threaded inserts and bolts, but they are tapped into the G-10 I beam. So no worries there. But the thing I did learn about these 100# plus limbs is that besides using .050 glass, they need a thin layer of G-10 on the bottom of the limb where it bolts to the riser. These extend past the riser a wee bit to protect the glass at that hinge point…..
I had one set actually fracture the glass at the end of the riser and break a solid rock hard maple wedge at the end of the riser.
I had the end of the riser rounded over nicely too, but it was too much pin point pressure for the glass.
The limbs I’m building now I’m using the HD Chromaply for wedges in vertical grain profile. These wedges should be stronger than maple by far. I honestly thought about using G-10 for wedge material and even ground a couple to test out. But… the stuff is way too stiff to use for a wedge at 1/4” to nothing in 12” . Maybe you could use a power lam system with one G-10 power lam along side a hardwood PW. I haven’t tried that yet. Kirk