COVID-19 and a novel initiative to improve safety by 3D printing personal protective equipment parts from computed tomography

Table 1 Mean absolute (mm) and relative (%) differences for 3D printed parts in comparison with the original PAPR

	Absolute CT (mm)	Absolute caliper (mm)	Relative CT (%)	Relative caliper (%)
Part 1
Ext. Large	0.15	0.58	.39	−1.89
Ext. Small	0.45	0.15	.82	−0.47
Int. Large		1.44		−4.01
Int. Small		0.135		−0.49
Height		0.99		2.09
Part 2
Ext. Large	0.35	0.58	0.9	−1.52
Ext. Small	0.2	0.1	0.65	−0.31
Int. Large		1.545		−4.36
Int. Small		0.37		−1.33
Height		1.06		2.24
Part 3
Ext. Large	0.1	0.425	0.26	−1.11
Ext. Small	0.4	0.005	1.31	−0.02
Int. Large		0.96		−2.67
Int. Small		0.38		−1.37
Height		1.005		2.12
Total mean Relative Difference	0.275	0.64	0.72	1.73

ISSN: 2365-6271