Spring of a Form

When a form has a great quantity of furniture in it, and is locked up very tight, it frequently springs up in the middle, so as to endanger its bursting upward; it is then said, the form springs, or it is termed the spring of the form.

In this case it is advisable to examine the furniture, for some pieces may not be planed square by the joiner, and to change them for others of the same size that appear perfect, and do not lock up very tight; tighten the quoins gradually, and frequently plane down while you are locking up; these measures will generally remedy the evil.