Introduction 

Angle-adjustable safety cutter, which is developed as a DIY teaching tool for making construction models and 3-dimensional products
is suitable for making a detailed model as it can cut  a straight line without twisting or bending its cutting plane which is adjustable from a 30 to 90-degree angle.  It can also be used when cutting papers,
form boards, hard boards, and Fomex about 5mm-thick.

Both professionals and children can use it safely without getting a cut when cutting a paper or
a thick board about 5mm thick. Thanks to its design that made it possible for having a firm grip and a safe blade which prevent bodily injuries.

In addition, it is convenient to use because there is a scale on the blade and an angle-adjustment bar
which prevents the scale from being pushed and allows a firm grip instead.

The angle-adjustable safety cutter has obtained a domestic patent in February 2011 and it also has applied for an international patent in August 2010.
It is a tool with a various  uses in activities such as making craftworks, construction models, and three-dimensional products.