3D Printing

Syringe Pump

Printing Syringe Pump Components

Print the following files with high infill density (we used 70%). The best orientation would be horizontally across. For example, the flange holder would be printed with the L shape on the printer bed.

The stl files are linked to the name of each component.

Name	Quantity	Drawing
Syringe Motor Mount	1
Syringe Displacer	1
Flange Holder	1
Syringe Hub Holder	1

Modifying Dimensions

If your syringe’s dimensions do not fit the model, use the Open SCAD files and export new stl models to print.

Download Open SCAD here.

Here are the links to the Open SCAD files you can use:

• Syringe Motor Mount
• Syringe Displacer
• Flange Holder
• Syringe Hub Holder
• Syringe Pump Constants

All the numbers in Open SCAD are in millimeters. Follow these steps:

1. Edit the dimensions in the SyringePumpConstants.scad file.
   • plungerDiameter is the diameter of plunger flange.
   • plungerThickness is the thickness of the plunger flange.
   • plungerInnerDiameter is the diameter of the part of the plunger directly below the flange.
   • barrelDiameter is the diameter of the barrel.
   • barrelSlotThickness is the vertical thickness of the barrel flange.
   • barrelSlotHeight is the total horizontal width of the barrel flange (use the shorter distance if the flange is asymmetrical).
   • hubDiameter is the diameter of the narrower part of the syringe below the barrel.
2. Save the edited SyringePumpConstants.scad file.
3. Open each model you want to print, click the render button.
4. Export the rendered file as .stl.

Bath and Collector

Printing Bath Containers

For the coagulation bath and water bath, there is a version compatible with resin printers and a version compatible with FDM printers. If using a resin printer, simply clean the print and it is ready to use. If using a FDM printer, attach a bath stand to each cutout in the coagulation and wash bath with superglue. Then, coat the print with a waterproof sealant. We used this silicone spray.

Name	Quantity	Drawing
Coagulation Bath (SLA)	1
Wash Bath (SLA)	1
Coagulation Bath (FDM)	1
Wash Bath (FDM)	1
Bath Stand (FDM)	8

Printing Roller Collectors

Name	Quantity	Drawing
Narrow Tank Stand	2
Wide Tank Stand	2
Roller	2
Shaft Sleeve	3
Axel	3
Post	3
Roller Motor Mount	1

Controller Box

Name	Quantity	Drawing
PCB Lid	1
PCB Box	1

Drying Yarns

A warping board works well for drying the yarns. However, we also designed printable stands to use in case you don’t have access to a warping board. After printing all the components, slot the Rack into the Base and insert the Rods into the Rack like so:

Two stands will be needed in order to wrap the yarns between them. We found that if the stands are placed 1 yard apart, two stands can dry two 60ml syringes at a time. To prevent the stands from tipping over, the base can be taped to the table.

The minimum print bed size for these files would 256mm x 256mm.

Name	Quantity	Drawing
Drying Stand Rod	6
Drying Stand Rack	2
Drying Stand Base	2