34 
BULLETIN 15 0, TJ. S. DEPARTMENT OF AGRICULTURE 
the use of either extremely high or extremely low pressures may be 
avoided. Pressures from 100 to 200 pounds per square inch are rec- 
omended, although satisfactory results may be obtained over the 
700 
Thin Medium Thick Very Thick 
Consistency of ^Glue at Time of Pressina 
Figure 6. — Pressures recommended for glues of different consistencies at the time 
of pressing 
entire range of pressures shown in Figure 6, provided the wood is 
strong enough to withstand crushing at the higher pressures. In 
using pressing equipment where the exact amount of pressure is not 
