Hello,
I made one out of pitch pine. I took a more than 100 year old dealboard for this work. I didn`t have dimensions of the Stellmoor bows. Alfred Rust, who discovered the "Ahrensburger Tunneltal" (Ahrensburg in the near of Hamburg), had found antlers of reindeer, their sceletons and flint arrowheads as well as tools made of bone and antler. The fragments of the bows were not in full length, only pieces of a maximum of 40cm (16", 1f/ 4"). The bowlimbs burnt off in the bombnights of WW2.
My bowdesign was pyramidial of about 1,40m in length and about 40-50mm at the widest part and the width of the little finger on the tips. It was sinew backed and had a drawweight of 40lbs at 26 lbs, if I remember it correct. If you don`t know how the bowwood acts make it long and wide. Long? The length was given by this nice old board with very thin grothrings.
My thoughts: how thick could have been the thickest pines in the iceage? Was sinewbacking already known by these ancient hunters?
It went to the iceage museum in Schleswig- Holstein (Bordesholm). But the Museum moved at the end of the last centenary.
Lots of work for a static display...
Regards
Uwe