How to Use a Propelling Pencil？

The propelling pencil is a mechanical writing instrument with a thin, cylindrical lead sleeve.  This pencil is used by professional artists for drafting and sketching.  They also have a slim design that is comfortable to hold.

A mechanical pencil uses a complicated mechanism that has been tested for years.  It is a very efficient device and works well.  But, it can be confusing to use.

Most pencils have a push button on top or side of the pencil.  Pressing this button is usually necessary to advance the lead.  Other pencils have a ratchet mechanism that moves the lead in fixed increments.  However, there are many different activation methods.

Another mechanical pencil has a clicky mechanism that advances the lead by a smooth motion.  Some users prefer this style.  Others prefer to click the lead out the old-fashioned way.

Unlike a ratchet mechanism, a clicky pencil does not require any special attention.  Instead, the lead advances smoothly and does not catch the paper.

If the lead is too loose, it can be bent into a slight oval shape.  If the lead is too tight, it can be shaved as it is inserted.

Some pencils have a double-knock mechanism.  When you press the tip against something, the spring-loaded collar extends.  This allows for a quick retracting.

Some pencils have a twisting mechanism.  This allows the user to advance the lead in small increments.  These pencils usually have a top or side button that allows the user to press the lead manually.