Development of DLP-Based
Stereolithography System
Baban Suryatal, Suhas Deshmukh, and Sunil Sarawade
Abstract A low-cost stereolithography (STL) apparatus was developed to produce
highly precise, three-dimensional (3D) structures from broad selection of functional
materials, especially photopolymer resin. The developed stereolithography apparatus (SLA) utilizes focused light beam of wavelength range (300–700 nm) coming
from the DLP projector and passing through the objective lens over the surface of
a photocurable resin, which undergoes photopolymerization and forms solid structures. The photopolymer used in this STL system was polyethylene glycol di-acrylate
and photoinitiator was Irgacure 784. The Creo 3.0 software was used for modelling
of 3D object. A special MATLAB code was developed for slicing of the 3D CAD
model. The Creation Workshop software was used to control the z-stage motion with
the help of Arduino microcontroller, stepper motor, and ball screw. It also controls
time period to display the sliced images through DLP projector and settling period.
The experiments were successfully performed to built hexagonal cross-section and
pyramid objects with 0.1 mm curing depth and two seconds curing time. The pyramid
object with maximum 120 numbers of layers with 12 mm maximum dimension along
Z-axis was build.
B. Suryatal (B)
Mechanical Engineering Department, Sinhgad College of Engineering Vadgaon (Bk.), Savitribai
Phule Pune University, Pune, Maharashtra 411041, India
e-mail: bksuryatal@gmail.com
Mechanical Engineering Department, PDEA’s College of Engineering, Manjari (Bk.), Pune,
Maharashtra 412307, India
S. Deshmukh
Mechanical Engineering Department, Government Engineering College, Karad, Maharashtra
415124, India
e-mail: suhas.deshmukh@gmail.com
S. Sarawade
Mechanical Engineering Department, MES College of Engineering, Pune, Maharashtra 411001,
India
e-mail: sunilsarawade36@gmail.com
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2021
N. Gascoin and E. Balasubramanian (eds.), Innovative Design, Analysis
and Development Practices in Aerospace and Automotive Engineering, Lecture Notes
in Mechanical Engineering, https://doi.org/10.1007/978-981-15-6619-6_21
199
Stereolithography System
Baban Suryatal, Suhas Deshmukh, and Sunil Sarawade
Abstract A low-cost stereolithography (STL) apparatus was developed to produce
highly precise, three-dimensional (3D) structures from broad selection of functional
materials, especially photopolymer resin. The developed stereolithography apparatus (SLA) utilizes focused light beam of wavelength range (300–700 nm) coming
from the DLP projector and passing through the objective lens over the surface of
a photocurable resin, which undergoes photopolymerization and forms solid structures. The photopolymer used in this STL system was polyethylene glycol di-acrylate
and photoinitiator was Irgacure 784. The Creo 3.0 software was used for modelling
of 3D object. A special MATLAB code was developed for slicing of the 3D CAD
model. The Creation Workshop software was used to control the z-stage motion with
the help of Arduino microcontroller, stepper motor, and ball screw. It also controls
time period to display the sliced images through DLP projector and settling period.
The experiments were successfully performed to built hexagonal cross-section and
pyramid objects with 0.1 mm curing depth and two seconds curing time. The pyramid
object with maximum 120 numbers of layers with 12 mm maximum dimension along
Z-axis was build.
B. Suryatal (B)
Mechanical Engineering Department, Sinhgad College of Engineering Vadgaon (Bk.), Savitribai
Phule Pune University, Pune, Maharashtra 411041, India
e-mail: bksuryatal@gmail.com
Mechanical Engineering Department, PDEA’s College of Engineering, Manjari (Bk.), Pune,
Maharashtra 412307, India
S. Deshmukh
Mechanical Engineering Department, Government Engineering College, Karad, Maharashtra
415124, India
e-mail: suhas.deshmukh@gmail.com
S. Sarawade
Mechanical Engineering Department, MES College of Engineering, Pune, Maharashtra 411001,
India
e-mail: sunilsarawade36@gmail.com
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2021
N. Gascoin and E. Balasubramanian (eds.), Innovative Design, Analysis
and Development Practices in Aerospace and Automotive Engineering, Lecture Notes
in Mechanical Engineering, https://doi.org/10.1007/978-981-15-6619-6_21
199