This is a popular design, so it was easy to find a good .stl file on Thingiverse

I downloaded the file and then uploaded it to Tinkercad. Tinkercad is a fantastic free online editing program for .stl files. It's pretty easy to use if you just want to make simple edits, and if your .stl file is not too complicated. It's perfect for this project.

I used Tinkercad to flatten the back of the necklace, then added a channel for the nOOd and a slight indentation for the battery case.

Take a look at the video at the top of this guide to follow along with the design process in Tinkercad.

I partnered the Ruiz Brothers to create a press-fit back for this necklace. It's not necessary to have a backing, but it can be nice, especially if you're making this for a child or want to wear it as a cosplay where you don't want the back swinging around and showing. 

  1. Turn off the printer and remove the resin vat.
  2. Pour isopropyl alcohol (IPA) into a container and place the print in it.
  3. Let the print soak in the IPA for 5 to 10 minutes.
  4. Use a pair of tweezers or pliers to gently remove the print from the IPA.
  5. Rinse the print with water to remove any remaining IPA.
  6. Use a paper towel or cloth to dry the print.
  7. Post-cure the print with UV light if desired.

Note: It's important to handle the print with care, as it may still be fragile after removing it from the resin.

For post-curing a resin print, you can use a UV light source with a wavelength of 385-405 nm. This is the wavelength range that is most effective for curing most types of resin.

There are several options for UV light sources, including:

  1. UV LED lamps: these are compact and energy-efficient, making them a popular choice for post-curing resin prints.

  2. UV curing boxes: these are larger, more heavy-duty options that can accommodate larger prints.

  3. UV light strips: these are flexible and can be positioned close to the print for more efficient curing.

It's important to choose a UV light source that is powerful enough for your resin and print size, as well as one that is easy to use and provides even and consistent light coverage.

This guide was first published on Feb 07, 2023. It was last updated on Mar 08, 2024.

This page (3D Printing) was last updated on Mar 08, 2024.

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