Always return the end pins at the end of the clamps.
Always select the correct size clamp for the task at hand.
Do not over tighten as you could damage the timber.
Various sizes of sache clamps are available.
They range from 600 mm to 1.8 metres in length.
They are used primarily for joining wood.When joining wood together it has to set ( eg) a door or table ,therefore sache clamps are adjusted to be able to allow the glue to set.