The fields of printing and typography have always been strongly correlated. Technology has made progress and conventional printing has taken on a new dimension. 3D printers and the required materials are getting more and more affordable for general public. The aim of the present thesis is to explore the usability and legibility of 3D printed typeface characters at smaller sizes using a low-cost 3D printer, as 3D printed typeface may be used for printing business cards, office signs, personalized phone cases, key rings, etc. In the theoretical part, previous studies in the field of 3D printed typeface are represented. In addition, printers, programs, materials, and technologies used for 3D printed typeface are described. Some common mistakes that often occur during printing, including main reasons for them are explained. In addition, options for spatial arrangement of typeface are listed. The concept of legibility and typeface elements on which it may depend are also defined. Moreover, parts of letters and fonts which were used in the research are featured. Finally, the image analysis method is described as well as the concept of tonal value of typeface and the programs used for its determination. The experimental part of the paper explains the choice of the font, its size and versions, and the texts selected for printing and analysing. In addition, modelling of the typeface on the basis of both used programs – Fusion 360 and Blender – as well as the preparation process for 3D printing and the actual printing procedure are specified and explained. The initial visual description of the printed pangrams is introduced and the described procedure encompasses graphic data and analysis of an individual letter in every printed version. The method for legibility testing and the acquired results are explained. In light of the results obtained, use of linear style fonts, such as Verdana and Arial, at size of 24 points, and PLA material are suggested for printing. No specific recommendations for typeface modelling and preparation for 3D printing are offered, as average deviations between research results depending on the use of either Fusion 360 or Blender program for the modelling of the typeface are not significant.
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