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Table 3 Retractors varied by perimeter number

From: 3D printed PLA Army-Navy retractors when used as linear retractors yield clinically acceptable tolerances

Number of Retractors

Perimeter Number

Estimated Mass (g)

Estimated Cost (USD)

22

2

10.20

$0.51

4

3

12.55

$0.63

4

4

14.91

$0.75

4

5

17.27

$0.86