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Polishing of the veneered wide surfaces by coarse and fine grinding is carried out on a fibre board which wide and narrow surfaces are glued with veneer.
Material
a fibre board wide and narrow surfaces are glued with veneer
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length: |
480 mm |
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width: |
480 mm |
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thickness: |
18 mm |
Figure
Machines and tools
Normal belt grinding machine, sand belt of medium corundum EK 25 or EK 32, sand belt of fine corundum EK 20 or EK 16.
Necessary basic knowledge
Manufacturing of boards with veneer technology
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Sequence of operations |
Comments |
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1. Placing the sand belt of medium corundum EK 25 or EK 32. |
Grind first the veneered surfaces with medium corundum, do not place too much pressure on the grinding shoe to prevent a grinding-through through the veneer. |
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2. Carrying out the coarse and fine grinding on the wide surfaces. |
By this first grinding glue residues and the taping paper are ground off. |
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3. Placing the sand belt of fine corundum EK 20 or EK 16. |
A fine corundum of the abrasive gives a smooth surface. |
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4. Carrying out a fine or second grinding on the wide surfaces. |
Carry out coarse and fine grinding always with the grain. Be careful when going over the edges. The pressure is easy to topple over and the veneer can be ground through. |
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5. Checking the ground wide surfaces. |
The surface should be evenly smooth and without ground hollows. |
Finishing
Polishing the narrow surfaces with a free hand grinding chunk and abrasive paper. Chamfering the edges. Application as a stool plate.
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