Q: What is the maximum thickness of materials that the machines can sew?
A: The machine is capable of sewing materials as thick as 7/16 inch, which encompasses the button as well as the material.
Q: Which maintenance oil is necessary?
A: Use “TYPE B” or TYPE D” oil which can be bought in the Singer Sewing Machine Company stores. TYPE D oil is the oil that has the least staining effect on fabrics.
Q: In case of continuous use of the machines, how often should they be oiled?
A: They can be lubricated with oil not less than twice in a day.
Q: Are the machines fitted for both two-hole and four-hole buttons?
A: Correct, two-hole and four-hole buttons can be fitted into both models.
Q: Is the clamp convertible to allow different sizes of buttons?
A: Yes, the universal clamp is adjustable to fit buttons ranging from 10 to 50 lignes.