Reservoir Heads

Cold Flow is our term for fluid or emulsified (non-filament-based) materials which are deposited at room temperature, with or without UV Crosslinking.

Materials for Cold Flow

The following materials can be printed from Cold Flow heads. Note that more viscous materials may not be suitable for plastic syringes or smaller luer tips.

• 3P Quick Cure Clay
• Adhesives
• Clay, Generic
• Epoxy, Two-part
• Fimo
• Glue
• Kato
• Metal Clay, including Precious Metal Clay (PMC)
• Modeling Clay
• PEG PolyEthylene Glycol
• Porcelain
• Plasticine
• Play-Doh
• Resins
• RTV Silicone
• Sculpey
• Sugru

Heads for Cold Flow

Cold Flow is available through the following heads:

• 

  EMO-25

• 

  COD-25

• 

  SDS-5, SDS-10, SDS-30, SDS-60

• CSD-30.png

  CSD-5, CSD-10, CSD-30, CSD-60

The following table compares the properties of the various Cold Flow heads:

Cold Flow Head Properties

Head	Container	Capacity	Nozzle	UV Crosslinking
EMO-25	Aluminum	25cc	1.5mm, 2.0mm, Luer	No
COD-25	Aluminum	25cc	Luer	Yes
SDS-5	Syringe	05cc	Luer	No
CSD-5	Syringe	05cc	Luer	Yes
SDS-10	Syringe	10cc	Luer	No
CSD-10	Syringe	10cc	Luer	Yes
SDS-30	Syringe	30cc	Luer	No
CSD-30	Syringe	30cc	Luer	Yes
SDS-60	Syringe	60cc	Luer	No
CSD-60	Syringe	60cc	Luer	Yes

Research Papers Citing Hyrel Cold Flow

• Bioactive Nanoengineered Hydrogels for Bone Tissue Engineering: A Growth-Factor-Free Approach in The American Chemical Society's ACS Nano
• Design and Fabrication of 3D Printed Scaffolds with a Mechanical Strength Comparable to Cortical Bone to Repair Large Bone Defects in Nature.com's Scientific Reports
• Emulsion Inks for 3D Printing of High Porosity Materials in the Macromolecular Journals

Settings

Some settings for the EMO-Type heads (like temperature, prime/unprime values) will vary, depending on what material you are printing with. Nozzle diameter should accurately reflect what nozzle you have loaded (1.6mm is default) AND what path width you sliced for. Temperature commands will be ignored by heads with no temperature control. Having said that, here are our default shipping settings:

EMO-Type Head Comparison

Settings	EMO, VOL, KRA, COD, VCD, KCD Heads (17mm Tubes, Various Gear Ratios)				SDS, CSD Heads (Various Tube Diameters, Standard Gear Ratios)
	19:1 Ratio	27:1 Ratio	51:1 Ratio	100:1 Ratio	SDS-5	SDS-10	SDS-30	SDS-60
Material
Type	Plasticine	Plasticine	Plasticine	Plasticine	Plasticine	Plasticine	Plasticine	Plasticine
Color	(any)	(any)	(any)	(any)	(any)	(any)	(any)	(any)
Nozzle	1.600	1.600	1.600	1.600	1.600	1.600	1.600	1.600
Layer	0.300	0.300	0.300	0.300	0.300	0.300	0.300	0.300
Temp Info
Print Temp	30	30	30	30	0	0	0	0
Power Factor	100	100	100	100	100	100	100	100
Minimum	0	0	0	0	0	0	0	0
Maximum	0/100/150	0/100/150	0/100/150	0/100/150	0	0	0	0
Overrides
Pulses	1.600	2.300	4.700	8.500	0.750	0.580*	0.225	0.150
Feed Rate %	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000
Prime Please note that Prime values will vary greatly from those shown, depending on the compressibility of your material.
Steps	600	700	1000	4000	200	200	300	500
Rate	10,000	10,000	10,000	10,000	10,000	10,000	10,000	10,000
Dwell Time (ms)	100	100	110	120	100	100	100	100
Before Tool Change	1	1	1	1	1	1	1	1
Unprime Please note that Unprime values will vary greatly from those shown, depending on the compressibility of your material.
Steps	500	550	800	3500	160	160	225	400
Rate	10,000	10,000	10,000	10,000	10,000	10,000	10,000	10,000
Dwell Time (ms)	100	100	100	110	100	100	100	100
After Tool Change	1	1	1	1	1	1	1	1
Offsets
Clone Head	Off	Off	Off	Off	Off	Off	Off	Off
X	0,000	0,000	0,000	0,000	0,000	0,000	0,000	0,000
Y	0,000	0,000	0,000	0,000	0,000	0,000	0,000	0,000
Z	0,000	0,000	0,000	0,000	0,000	0,000	0,000	0,000
Head Info
Model	(varies)	(varies)	(varies)	(varies)	(varies)	(varies)	(varies)	(varies)
RTD Type	1 Meg	1 Meg	1 Meg	1 Meg	1 Meg	1 Meg	1 Meg	1 Meg
Motor Current	High	High	High	High	High	High	High	High
Step Mode	Sixteenth	Sixteenth	Sixteenth	Sixteenth	Sixteenth	Sixteenth	Sixteenth	Sixteenth
* Thanks to Yasmine at VT for the precise calculation.