When the handwriting punch impacts the metal surface, it causes the depression deformation on the metal surface. At the same time, the metal crystals under the depression deformation are fragmented to form the crystal fragmentation layer. The crystal fragmentation layer may still exist after the indentation deformation of stamping handwriting is abraded. The original handwriting can be displayed by treating the crystal fragmentation layer with chemical corrosives. The method used in this box is to encapsulate various corrosive chemical reagents in amperometric bottles. Then the ampere bottle is encapsulated in the plastic casing. When in use, the ampere bottle is broken to mix the reagents, the plastic pipe seal is cut with scissors, the solution flows out of the opening, and the potential metal handwriting is dotted on the potential metal handwriting to show the potential metal handwriting. Using this box can avoid the trouble of preparing solution by oneself.
20 tube steel handwriting display liquid A 20 tube steel handwriting display liquid B 5 tube aluminium handwriting display liquid A 5 battalion aluminium handwriting display liquid B
5 tubes of copper handwriting display A liquid 5 battalions of copper handwriting display B liquid 10 pieces of 80 sand cloth 10 pieces of 120 sand cloth 10 pieces of 150 sand cloth
A polished felt, 200 sticks, a pack of degreased cotton, a towel, a pair of sweater gloves, 100 disposable plastic gloves
1 pair of scissors, 1 pair of crushing forceps steel handwriting reagent (liquid A, liquid B) 10 ml x 2
Copper handwriting reagent (liquid A, liquid B) 10 ml x 2
Aluminum handwriting reagent (liquid A, liquid B) 10 ml x 2
Aluminum alloy outer case: box size 485*350*150
