OK7 Costume Workshop
Sewing Studio manual
Learn how to operate and adjust the industrial sewing machines, and learn how to use the steam iron unit. The instruction videos (5) will show you in detail how to operate and adjust the machines. Note: Open the table of contents from the black arrow "Open block drawer" in the upper right corner.
GENERAL INSTRUCTIONS
- Select the machine according to its intended use (see machine descriptions).
- Turn off the machine when changing the bobbin / needle, and when checking the threading.
- Eye and finger protection components cannot be removed.
- The machines are extremely rarely broken. Usually, the problems are caused by issues with threading or the condition of the needle. Be patient and try to solve the problem.
1. Industrial sewing machines
1.5. Operating and adjusting instructions (video)
Adjusting thread tension
- Higher (tighter) for thick materials.
- Lower (looser) for thin materials.O
- Test the stitch quality on a piece of fabric of before starting to sew.
Stitch length and width
- Longer for thick materials.
- Shorter for thin materials.
- Test the stitch quality on a piece of fabric of before starting to sew.
Adjusting the presser foot pressure
- This adjustment is rarely required.
- Use higher pressure on heavy materials.
- Use lower pressure on thin and poorly feeding material.
- Test the pressure by sewing on a piece of fabric.
- Please note: Loosen gently, the metal rod and spring in the adjusting tube will come loose if the grooves run out.