EHR

EHR - Engine, High Resolution

The Engine is the unenclosed model, and may be configured as follows:

CURRENT Engine Model Comparison - as of January, 2021
Model	Engine SR Standard Resolution	Engine HR High Resolution
Image
Heated Build Platform	yes	yes
Integrated Tablet PC	yes	yes
Initial Heads	1	1
Maximum Heads	4	3
X/Y-Axes Motion Control	Belts	Precision Ball Screws
Z-Axis Motion Control	Precision Ball Screw	Precision Ball Screw
Positional Resolution X / Y / Z in μm	<10 / <10 / <1	<1.25 / <1.25 / <1
Positional Accuracy X / Y / Z in μm	<50 / <50 / <10	<12 / <12 / <10
Positional Repeatability X / Y / Z in μm	<25 / <25 / <5	<12 / <12 / <5
Precise X/Y Output for Bioplots	100 μm lines 200 μm spacing	50 μm lines 100 μm spacing
Precise Z output for Bioplots	25 μm layers	25 μm layers

For reference, the initial Engine configurations were as follows:

OLD Engine Model Comparison - DISCONTINUED
Model	E1 Tinkerer DISCONTINUED	E2 Hobbyist DISCONTINUED	E3 Apprentice SEE Engine SR	E4 Journeyman DISCONTINUED	E5 Professional DISCONTINUED
Heated Build Platform	no	yes	yes	yes	yes
Integrated PC & Touchscreen or Tablet PC	no	no	yes	yes	yes
Initial Heads	1	1	1	2	4
Maximum Heads	4	4	4	4	4

Speed of travel (at slicing or in g-code editor)
Layer thickness (at slicing)
Volume of flow per unit distance (at slicing or in g-code editor)
Extruder temperature (at slicing, in g-code editor, or manually during build) (MK-1, VOL-25)
Cooling Fan speed (at slicing, in g-code editor, or manually during build (MK-1, QS-1)
HotBed Temperature (at slicing, in g-code editor, or manually during build)

Or, is tabular better?

Adjustments
Metric	Units	During Slicing	In G-Code Editor	GUI During Build
Speed of Travel	mm/min	yes	yes	no
Layer Thickness	mm	yes	no	no
Flow Rate	nL/sec	yes	yes	yes
Extruder Temperature	°C	yes	yes	yes
Fan Speed	% of max	yes	yes	yes
HotBed	°C	yes	yes	yes