making natural bent hor strips is the problems for many new horn bow maker,turkish use heating water way,here in china,we do like this way:
heat wax or oil more than 100degress(more higher degree than water,may be 200-300 degree )
and then put horn strips into very hot liquid wax or hot oil for some minutes.and then take out strips to straighten them by hand(be carefull to take very thicker glove or use thicker bottom shoes to make them straight ) or press machine (like or similar machine photo shown),if horn strips is still very hard to straighten,continue to heat some minutes,and then straight them again till to your need shape,water heating is easy to broken split horn strips,as water is maxium to 100 degree(not enough)and water into horn deeply,when it dry by wind,sometimes is easy to split the horn,it is the top secret how to make horn strips straighten,but be carefull:wax or oil is easy to fire up:forbidden smoking or fire when do such work.