Magnetic Accelerator

It's a device mainly meant for speeding up magnetic objects that are spherical.

3D printer+filament (any thickness works), iron or steel nails, copper wire, and a computer capable of running 3D modeling software like Onshape or Fusion 360 if you are to remake this

1. Open up any CADD program, but I used Onshape for this project.
2. Open a new file if you are already logged on
3. First, make the base sketch, which is 7”x7”
4. Extrude that by .5” in any direction
5. Then, on a new sketch on the top surface of that extrusion, make 4 1” circles, 1 in each corner. Spaced .75” from the 2 closest sides.
6. Make a construction plane 4 in above the base sketch, and in that same plane, sketch a 3.5” square with a diameter of 1”.
7. Use the loft tool to make the support extrusions for a platform. It is important to note the generator may bug out if you have the sketches selected incorrectly.

1. Make a second Part Studio
2. Sketch on the top plane a 5” square, then extrude that by half an inch
3. Make a second sketch with a 4” circle based of the center point of the extruded square.
4. Then make a construction plane in the middle of the square
5. Make a circle with .96” diameter, then draw a .141” line under the circle from the outside of the circle, then make a circle concentric with the first one in the sketch based on the line
6. Make a second line of equal length and, using the dimension tool, set the angle of them to 45 degrees.
7. Extrude the half circle and eight of the circle using the revolve tool (make sure the circle on the top plane is selected as the path.) (If you wish to save filament, you can hollow out the center.)
8. Add a circle in each corner on the bottom and extrude them by a small amount(.1” or smaller)

Open an assembly file and insert both parts.

Use fastened constraints to bind the parts together, using the circles as the selected points.

Select all parts of the project, then right-click on the mouse or tap with two fingers on a trackpad. Select Export, then download the files to a USB drive or other file storage medium compatible with your 3D printer.

Get four nails of iron or steel. Any other naturally magnetic item also works, but it can affect how much copper you need, for better or worse. Once you have these nails, wrap them individually in copper wire. You can take off the enamel coating if you wish.

Secure each nail on its own side to prevent too much attraction to one point. DO NOT USE DUCT TAPE OR ANY FLAMMABLES. Now hook up the nails to power, and they should become electromagnets. (When hooked up to power, the nails could burn you. Exercise caution.) Put any magnetic ball in, and it should slowly accelerate.