How to Make a Light-up Grim Reaper

by Slayerbacca in Workshop > 3D Printing

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How to Make a Light-up Grim Reaper

Grim Reaper LED and how it works

These are the steps I took to create a Grim Reaper statue that lights up.

Problem Solving

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I started prototyping this project on October 10th. I had to ask myself a crucial question; what can I do to make the statue look the best while still being functional? I then made a list of ideas and thoughts on how to achieve this goal. Once I decided what I wanted to do, I sketched out a design and took measurements of the parts I would need.

Design and Prototyping

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After many nights and many failed attempts, I figured out the best way to construct my reaper and send it to the 3D printer. Once printed on October 22nd, I looked into how I would light it; a tea light would be too big and the model is too heavy to put on a light strand. I decided to use an LED Festoon bulb and wire it with a resistor to prevent a power surge destroying the bulb. I then wired this to a switch using two 9-volt batteries to power it. (LED Festoon Bulb 12 Volt DC Only 0.5W T3 Replacement 2700K Warm White 60 Lumens PLT 10397 to be exact about the bulb).

Finishing the Prototype and Throught Process

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After I got the light and batteries, I designed the base for the project. The base would hide all of the electrical components while allowing the statue to stand firmly. I drew the prototype, but it was too small. I had to adjust the dimensions to make the final sturdier and hide all components. With having the measurements finalized and pieces sanded, I ran into some problems.

Fixing the Problems

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As I was all ready to print the base and get the reaper together, my 3D printer was not heating correctly. It was a known problem with Anet A8 printers that the MOSFETs were undersized. A word of warning to anyone with this printer, make sure your printer is heating correctly and if not, order 2 additional MOSFETs and a power supply. As I was waiting for the MOSFETs to be delivered, I decided to theorycraft a different way to get inside the base and decided to change the measurements to 57.15 by 40 by 39.37 mm and use a Dovetail to get inside. Once the MOSFETs arrived, I fixed the printer and printed the base with corrected measurements.

Light-up Grim Reaper: Tools

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Shown above are the tools I used along with online programs such as Tinkercad, Autodesk Inventor, and Fusion 360. For the Reaper I Rotated it 90° and sized the Y down to .8 instead of 1.

Assembly

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As my project was coming to the end, along with my time, I decided to glue the reaper to the base. Using wood glue and a piece of paper to size the holes for the light to shine through, I drilled and sanded the base until it was flush so the wires would stay in.

Finishing Touches

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After the holes were drilled and the glue dried, I finished the construction of my LED light-up Grim Reaper. Printing with different color filaments is possible, but painting the finished statue will reduce the light-up effect of the statue, so it is not preferred to paint the final statue.