The outward faces of the T-slots have been machined flat to allow for rigid, precise and orthogonal mounting.
The T-Slots on the custom motor faceplates allow for easy mounting solutions to pre-existing machines, as well as providing a more compact, stable platform for printer manufacturers to integrate onto their machine.Įach side of the motor has 4 T-Slots which accept standard M3 square nuts. These two improvements together mean that the filament has only one place to go – into your nozzle, and that when you apply a force – it responds.Īn additional benefit of this arrangement is that there are zero transitions after the drive gears, filament proceeds directly to the melt. Hemera has a custom motor, based on a NEMA 17 frame, with our own bespoke faceplate which allows the motor itself to be part of the extruder housing, this lowers part count, makes assembly easier, and results in a compact system. Hemera is a system of components designed to work seamlessly together as a single product. We set out to develop a compact extruder and HotEnd system with a reduced part-count. Fundamentally, the entire extrusion system is just better. Dual drive is an established concept within the industry (going all the way back to 2011 with Steves Extruder used on the SeeMeCNC H1) and it is clear that dual-drive provides considerably more grip when compared to single drive systems. When designing Hemera’ dual-drive hobbs, we took a ground-up approach starting with a specification of dual-drive, researching and testing material combinations and implementing our tooth profiles. A dry-running system, as we know, means minimal user-maintenance and also prevents filament debris from sticking to a greasy drive train. For bearings we make use of an igus ® bushing and shielded ball-bearings. With the drive train being made from hardened stainless steel, we can maintain lubrication-free operation of the Hemera gearbox. This enables the drivetrain to fit within the frame of a Nema 17 stepper motor – more on compactness in the next section. (Look familiar? You may remember this self-cleaning tooth profile in the Titan extruder.)Īs a result of opting for an all-metal hardened stainless steel drivetrain, we were able to reduce the size of the gears. Sharp teeth – with a round bottomed profile – provide excellent grip and strongly resist filament debris wedging into the drive gear and in almost all cases it’s self-cleaning as any debris simply falls off the teeth. All the gears are hardened stainless steel. The secondary gear shaft is on a moveable, sprung idler which allows the user to adjust filament tension. We are able to push filament with up to 10kg of force. Thanks in advance for your understanding.įor E3D Hemera, we opted for a dual-drive arrangement which provides a huge boost in grip over single drive systems. If you see any instances of the old name hanging around please do let us know too.
Please do excuse us if some of the content is slightly less polished than usual, it’s been a long hard night. Therefore we’ve had to undergo a rapid unscheduled rebranding, and have settled on Hemera, a somewhat less fashionable Greek god, yet still in keeping with our other mythological names, and our first female one too. Unfortunately we don’t have the time or resources to resolve this through a long legal process and we just want to get on with making incredible extrusion systems. They objected to us naming our product after a Greek god from the Mycenaean era, as they feel that name belongs to them. Unfortunately, less than 24 hours before launch, we received a legal challenge from a company much larger than us, and with significantly more legal resources. You’re probably wondering why at the last minute everything that you were expecting to be called ‘Hermes’ is now called ‘Hemera’.
#Hemera disassembly upgrade
Upgrade almost any extrusion-based 3D printer on the market today, easily. Hemera is also available as a bowden extruder.įeaturing a dual-drive, hardened stainless steel drive train with a fully constrained, super-short filament path and an E3D-V6 Hot-Side, E3D Hemera provides an unrivalled precision extrusion experience: excellent control over stops and starts greatly reduced stringing and blobbing and greater filament traction means slipping and grinding are a thing of the past. It combines our market leading V6 hotend with an all new filament drive to form a highly responsive direct drive extrusion system – providing unrivaled performance with flexible filaments. Blog originally written and supplied by E3D Online.Į3D Hemera – formerly Hermes – is the best extrusion system we’ve ever made.
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