For many years engaged in bookbinding business. Stapling the sheet sets at the root, not sew them, string, inserting in the cuts the block with a depth of 3 to 4 mm sturdy thread in the shown sequence. Then coat the lace with glue— everything works faster and stronger.
O. EVDOKIMOV, Saint-Petersburg
Recommend to read
THERMORESIN FOAM
If you have a rectifier for charging automobile batteries, a step-down transformer or Latr you will be able to make thermoresin cutting foam. The cutting part is a piece of nichrome wire...
THREAD IN A THIN SHEET
Usually designers avoid threaded joints if at the conventional "nut" less than two to three threads. Method shown in figure, allows you to make a threaded connection more reliable....
