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Smooth and thickness grinding of the wide surfaces by grindig as the prerequisite for sticking with veneer is carried out on a fibre board.
Material
a fibre board
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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 with a corundum EK 32 or EK 40
Measuring and testing means
Folding rule
Necessary basic knowledge
Working on circular sawing machines
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Sequence of operations |
Comments |
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1. Placing and fastening the sand belt with a selected corundum EK 32 or EK 40 |
Abrasives of precious corundum, abbreviation EK, are applied with the grinding of fibre boards and veneer material. The grain size is selected according to the desired surface smoothness. The fastened belt should be able to be pressed by hand only slightly. Cover the belt rollers and the upper part of the sand belt. |
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2. Placing the piece of work on the stop of the sliding table and fixing the height of the table. |
The piece of work should sit fast with the stop to avoid a slinging off by the draft of the sand belt. |
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3. Switching-on the machine. | |
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4. Grinding the wide surfaces with the pressure shoe. |
Be careful when grinding the edges, the pressure shoe can topple over. Do not lead the pressure shoe to far over the edges otherwise they will be round ground. |
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5. Switching-off the machine. | |
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6. Checking the grinded wide surfaces |
The wide surfaces should be even and slightly rough. |
Finishing
Sticking the wide and narrow surfaces with veneer, grinding and chamfering the edges. Application as a stool plate.
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