Porous point pen
Encyclopedia
A porous point pen contains a point that is made of some porous material such as felt
or ceramic
.
Draftsman
's pens usually have a ceramic tip since this wears well and does not broaden when pressure is applied while writing.
Felt
Felt is a non-woven cloth that is produced by matting, condensing and pressing woollen fibres. While some types of felt are very soft, some are tough enough to form construction materials. Felt can be of any colour, and made into any shape or size....
or ceramic
Ceramic
A ceramic is an inorganic, nonmetallic solid prepared by the action of heat and subsequent cooling. Ceramic materials may have a crystalline or partly crystalline structure, or may be amorphous...
.
Draftsman
Technical drawing
Technical drawing, also known as drafting or draughting, is the act and discipline of composing plans that visually communicate how something functions or has to be constructed.Drafting is the language of industry....
's pens usually have a ceramic tip since this wears well and does not broaden when pressure is applied while writing.