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I have an old Unimat SL that had given me years of scratchbuilding enjoyment. I had to store it for a few years and when I tried to use it again I found that the tool bed had become stiff to move with the main screw shaft. As I tried gripping it (protecting the threads with wood between vicegrip jaws) it became stiffer to turn as it moved toward the end of the shaft. Now it is completely frozen. I have tried penetrating oil but since I cannot grip the threaded shaft hard enough to prevent it from turning I have not been able to get the two apart to give them a proper cleaning. Does anyone have suggestions of how to get these parts separated and cleaned so I can continue using this wonderful old tool? <br />Thanks, <br />N.E.D.
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