## 2 Material and Methods  
In experimental studies, ABS (acrylonitrile butadiene styrene) was utilized due to its high hardness value, which provides impact resistance. In addition to this feature, ABS both is flexible and exhibits effective insulation properties. The 4 g toy samples were fabricated through two distinct methods: plastic injection and FDM (3D printing). In the former, ABS was used in granular form, while in the latter, it was employed as a filament. The design of the sample is first created in CAD mode in the computer environment, and the designed or ready-made CAD model is converted into G-codes using a slicing program and printed. In this study, the model converted to STL format in the SolidWorks program was converted to G-code using the Simplify3D slicing program. The fabrication of the samples was conducted by employing an ABS filament, which was subsequently transferred to an S1 model 3D printer from 3D3 Technology. The 3D3 S1 is an FDM 3D printer with a build volume of 250 \(\times\) 210 \(\times\) 210 mm and a layer resolution of 50 microns. It supports various filaments, including PLA, ABS, PC (polycarbonate), wood, PETG (Polyethylene Terephthalate Glycol), ASA (acrylonitrile styrene acrylate), tough PLA, metal-filled PLA, glass fiber-reinforced PA, carbon fiber-reinforced PA, flex, and semi-flex. The printer has a metal frame and a 0.4 mm interchangeable nozzle. It can print at speeds up to 150 mm/swith a maximum nozzle temperature of 295 \({}^{\circ}\)C and a heated bed temperature of 140 \({}^{\circ}\)C. The printer weighs 15 kg and uses a 300 W power supply. The 3D printing parameters and the 3D printer model are delineated in Table 1 and Figure 1, respectively. PLA material is considered an alternative to ABS, a by-product of petroleum, due to its vegetable content. Its ease of use in 3D printers has led to its popularity. Consequently, this study will utilize a PLA filament in conjunction with the FDM technique to produce alternative components to those manufactured using an ABS filament. A comparative analysis will be conducted to assess the performance and suitability of the PLA filament. After the toy part was produced on the 3D printer, it was not subjected to any additional processing, such as surface or feature enhancement. It was tested as it came out of the printer. The plastic injection molding process begins with a mold design, which is typically performed using Computer-Aided Design (CAD) software. Once designed, the mold is fabricated and then integrated into an injection molding machine. In this process, granular plastic material is fed into the machine, where it is liquefied through heating and pressure. The molten plastic is then injected into the mold cavity and rapidly cooled to solidify, taking the shape of the desired part. For the purposes of this study, a Demag brand plastic injection machine with a production capacity of 90 tons was utilized, along with an LG brand ABS thermoplastic material, HI121. The Demag Ergotech 80/400 viva, was sourced from Demag, a German manufacturer, features a clamping force of 123 kN and an injection pressure of 210 bar. The injection unit is equipped with a screw diameter of 123 mm and a \begin{table}
\begin{tabular}{c c c} \hline \hline
**Printing Parameters** & **Value** & **Value** \\ \hline Material & ABS & PLA \\ \hline Print Speed (mm/s) & 50 & 50 \\ \hline Printing Temperature (\({}^{\circ}\)C) & 240 & 200 \\ \hline Bed Temperature (\({}^{\circ}\)C) & 90 & 60 \\ \hline Layer Height (\(\mu\)m) & 120 & 120 \\ \hline Infill Density (\%) & 100 & 100 \\ \hline Nozzle Diameter (mm) & 0.3 & 0.3 \\ \hline Print Time (min) & 240 & 240 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Printing parameters. Figure 1: 3D printing device: 3D3 Technology S1 model. stroke volume of 123 cm\({}^{3}\). The machine's dimensions, including width, depth, and height, are each 123 mm, and it has a total weight of approximately 3600 kg. The main electrical connection is rated at 400 V and 50 Hz.