Prusa i3 Direct Drive Extruder
thingiverse
This is a direct drive extruder system for Prusa i3. Best used with JHead style hot end and MK7 drive gear with NEMA17 Motor. Has a built-in fan mount for active cooling the hot end barrel. Designed for 1.75mm filaments ABS/PLA. Use this with : Minimalistic MK7 Replacement by whosawwhatsis (thing:15718) MK7 Drive Gear Prusa i3 Original X Carriage (Wide Version) J-Head Style HotEnd Compression spring with specifications listed in below www.blomker.com Specification for compression spring : Material = Steel Alloy Free Length = 30.5mm Minimum Working Length = 19.9mm Outside Diameter = 7.3mm Wire Diameter = 1mm Load at Minimum Working Length = 34.13N Spring Rate = 3.26N/mm
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