If the contact surfaces of a V-block become worn, the most appropriate action is to:
Replace or recondition the V-block
A V-block is a precision locating tool: its two machined faces meet at a fixed 90° groove that cradles round or cylindrical work so it can be marked out or measured about a true centre line.
The whole usefulness of the block depends on that V-form staying geometrically exact, because any job seated in it inherits the accuracy of the seat.
When the contact faces wear, the included angle and the depth of seating change, so the workpiece no longer sits on the correct centre height or axis.
Every mark, height or measurement then taken from the block is shifted by the amount of wear, quietly spoiling the accuracy of the finished job.
Ignoring the wear lets these errors continue; increasing clamping force cannot restore a lost angle and may bruise the faces further; painting only hides the defect and adds an uneven layer.
The correct remedy is to regrind the faces back to the true V-form (recondition it) or, where wear is too deep to grind out, to fit a new block.
Hence, the answer is Replace or recondition the V-block.
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Important Questions from Marking and Marking Tools
What is the point angle of prick punch which is used for making light punch marks?
The point angle of scriber is
The angle of the punch used for witness marks is
A fitter is tasked with marking accurate parallel lines on a metal plate before cutting. He must select a divider with tips made of a suitable material for this job. Which divider tip material would be most appropriate to use to avoid rapid wear and ensure precise marking on the metal surface?
In a workshop, a mechanic needs to determine the length of the diagonal support for a rectangular metal plate with sides of 9 cm and 12 cm. Which value represents the correct length of the diagonal support needed?
