Manufacture metal pieces

[ZASto]

Before machining your bed, you should tram your spindle.
Spindle that is not tramed will make a stairway (not to heaven ) on your bed during flattening.

[Begus]

Before machining your bed, you should tram your spindle.
Spindle that is not tramed will make a stairway (not to heaven ) on your bed during flattening.

Thanks for the advice!
Is there anything else that could go wrong with my plan?

[dazp1976]

Before machining your bed, you should tram your spindle.
Spindle that is not tramed will make a stairway (not to heaven ) on your bed during flattening.

Which would you prefer to have mounted on the table for best tramming results?.
A sheet of glass or thick perspex?.
Or just stick your needle on the table itself?.