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RESISTANT MATERIALS EXAMINATION QUESTIONS

V. Ryan 2004

 

1. In the available spaces around the picture of the sash clamp, print the names of the various parts.

   

   
 
 

2. In the space below, explain how a sash clamp is used to clamp a frame/ box when it is being glued together. In the box opposite draw a diagram to help support your explanation.

   
EXPLANATION:

When in use, the sash clamp is placed below the work to be glued / assembled. The slides are arranged on either side and scrap wood is placed between each face and the work. This protects the work when the thread is tightened. The tommy bar is used to tighten the thread and pressure is increased slowly.

Normally at least two sash clamps are used together. This depends on the size of the box / frame.

 

DIAGRAM:

 
   
3. What can be done to help prevent damage to the surface of the wood being clamped?
   

Scrap wood is placed between the faces of the clamps sides and the wood surface. This means that any damage occurs to the scrap wood and not the surface of the box / frame.

   

 

   

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