Table 4 Summary of material consumption...

Table 4

Summary of material consumption and production time for conventional moulding inserts (subtractive manufacturing) and CCC inserts (additive manufacturing)

Material consumption and production time	Unit	Subtractive manufacturing			Additive manufacturing
Material consumption and production time	Unit	Core	Cavity	Total	Core	Cavity	Total
Spent material	g	4,200	2,400	6,600	2,002	1,168	3,170
Material cost	€	–	–	50	–	–	151.50
Pre-production time	hh:mm	02:40	04:20	07:00	00:15	00:15	00:30
Production time	hh:mm	07:45	07:25	15:10			59:52¹
Finishing operations time	hh:mm	02:55	00:50	03:45	05:40	09:35	15:15
Total time	hh:mm	13:20	12:35	25:55	05:55	09:50	75:37
Total cost²	€			580			2,150
Final mass	g	1,895	1,142	3,037	1,590	995	2,585
Material waste	%³	55%	52%	54%	21%	15%	18%

Material consumption and production time	Unit	Subtractive manufacturing			Additive manufacturing
Material consumption and production time	Unit	Core	Cavity	Total	Core	Cavity	Total
Spent material	g	4,200	2,400	6,600	2,002	1,168	3,170
Material cost	€	–	–	50	–	–	151.50
Pre-production time	hh:mm	02:40	04:20	07:00	00:15	00:15	00:30
Production time	hh:mm	07:45	07:25	15:10			59:52¹
Finishing operations time	hh:mm	02:55	00:50	03:45	05:40	09:35	15:15
Total time	hh:mm	13:20	12:35	25:55	05:55	09:50	75:37
Total cost²	€			580			2,150
Final mass	g	1,895	1,142	3,037	1,590	995	2,585
Material waste	%³	55%	52%	54%	21%	15%	18%

Note(s):

¹Considering the simultaneous production of the two injection moulding inserts; ²Value considers pre-production, production and finishing operations; ³Based on the material used and the final weight of the moulding inserts

Source(s): Authors’ own work

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