Difference between revisions of "CSD"

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The CSD is our line of extruders for low viscosity emulsions which print at room temperature, with a UV LED array to photoinitiate crosslinking of photosensitive material. . The heads are available for 5, 10, 30, or 60cc plastic syringes.
 
[[File:CSD-60.png|200px|left|CSD-60]]
 
This includes the following materials:
 
<div style="column-count:3;-moz-column-count:3;-webkit-column-count:3">
*Liquids
*Gels
*Emulsions
*Resins
</div>
 
== Videos ==
 
# Overview of the head:
## [[File:Yt.png]] [https://www.youtube.com/watch?v=h95IurET7UM Overview of the SDS and CSD Heads]
# Loading CSD and SDS Heads:
## [[File:Yt.png]] [https://www.youtube.com/watch?v=0JJp7HeK35M Loading the SDS Head]
## [[File:Yt.png]] [https://www.youtube.com/watch?v=ej55bZXrltA Loading the SDS Head with RTV]
 
== Description ==
 
* The SDS heads accept BD plastic syringe reservoirs in 5, 10, 30, or 60cc with luer fittings. The LED array has three LEDs at a user-specified wavelength to irradiate the deposited material. Industry standard luer tips or needles are available from a variety of sources.
 
== Loading the Head onto the Printer ==
 
As with all Hyrel heads, the following process should be followed:
 
# Start with a level bed and Repetrel running and connected to the printer.
# Load the gibs on the Head into the gib slots on the Yoke from above and slide the head down into place; the last mm of travel should be done gently, ensuring that the electrical connector seats properly (firmly and completely) into the receiving connector.
# Ensure the LEDs on the print head are flashing - this means the Head is communicating with the Motion Controller.
# Tighten the thumbscrew in the rear, to prevent the head from moving relative to the Yoke.
# If the Head doesn't show up in Repetrel, press and release the RESET button on the front of the printer.
# Once the Head is shown in repetrel, proceed to setting your Z-Zero position.
 
== Loading material into the Head ==
 
Loading:
 
* Care should be taken to avoid air pockets, as this will introduce delay when starting and stopping material flow.
* The plunger adapter will need to be adjusted up or down to match the position of the plunger for the amount of material you have loaded; do this with the manual feed lever at the top left of the 103 hothead controller board. See videos, above.
 
Unloading:
 
* Unloading is the same process as loading, only in reverse. Tubes and nozzles should be cleaned thoroughly after use.
 
== Default Parameters ==
 
Default settings for all SDS series heads are shown on the [[Cold_and_Warm_Flow]] page.
 
== Adjustments ==
 
The only adjustments needed should be changes to the PRIME and UNPRIME settings, and will have to be dialed in based on how viscous and compressible your material is, and how narrow a nozzle or luer tip you are using.. In dialing in new settings, I usually double or half the settings for both STEPS and TIME, then make another print and reassess.
 
== Firmware ==
 
Please see the [[Downloads]] page for the current firmware for your heads and your version of Repetrel.
 
== Maintenance ==
 
With disposable syringes and luer tips to prevent cross-contamination, very little maintenance is required on these heads.

Latest revision as of 12:51, 23 June 2020

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