Rainbow Lamp

This model forms a beautiful rainbow lamp. And it turned out to be my hardest slicer challenge so far. Let me explain how to print.

• The back side has been easily printed with Prusament Vanilla PLA. I used 3 perimeters and 0.25 mm layer height. 

• The battery holder is also easy print. 2 Perimeters will do. It needs a pause in order to insert six M3 square nuts. Print with 0.25 mm layer height. 

• The lid is the easiest part of them all. Print with 0.25 mm layer height. 

• And then comes the top group. I have to describe this one in detail

  • Import the top stl as a new object.

  • Import the red, organge, yellow, green, blue and purple stls as parts of that object, using the import function from right clicking the top stl object in the right box. 

  • Change to expert-mode in the slicer. 

  • Define 7 extruders and enable the single-extruder multi material option. 

  • Add a user-defined g-code at tool change command M600. This will ask you to change the filament between the rings. 

  • Assign an extruder 1 to 6 to each of the colors and extruder 7 to the top stl. The order is important. 

  • Add a height range from 0 up to 0.25 mm, and set its number of perimeters to 100. 

  • Do not forget to add a printing pause in order to insert the M3 quare nuts. 

  • Slice and print.

  • For the colors I have used the Sunlu 8 x 250g PLA Filament bundle. This is a cheap way to get just a tiny little bit of each of the colors.

  • For purple, I have used a glow-in-the-dark filament, just because it was there, but the printing result was not convincing. 

  • The white part was also printed with Prusament Vanilla PLA. 

  • I used a 3V white led stripe. 

  • And a mini rocker switch 9 x 13 mm. 

  • The battery electrodes came from a brocken device, but they can be bought as well. 

Please note, that I mixed up the order of the colors while printing. Of course, the outer arc has to be red and the inner arc has to be blue.