Kaleidoscope Christmas Ball 1

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5100757.

I designed this using Affiinity Designer to create cross-sections and then did everything else in Blender. 

I designed theis to print easily, to be light, and to look elegant when printed in one color. I recommend using a metallic or silky filament (or spray paint the final print with a metallic paint). The metallic or silky highlights will catch the light and show off the complex geometry of the ornaments.

At 100%, this is 80mm wide, which is a nice size for trees 1.5 meter and larger. However, I scaled a similar design to 60% and it looks great. At that size, it will work well on trees as small as 0.5 meter high. You may be able to scale this down slightly smaller than 60%, but I haven't tried it. If you do and it works, please post a comment.

PRINT SETTINGS

To make the print as light as possible, I printed at just 0.4mm walls and 0.45mm top/bottom thickness. I also used Cura's Support Blocker and Per Model Setting's "Modify Settings for Overlaps" to add 20% infill - but just for the bottom 6mm of the ornament. I recommend a layer height of 0.15mm.

You won't need a raft, but I recommend using a brim.

There are other parts of the ornaments that appear to need infill, but they are self-healing and do not show in the final print if you leave out the infill. Infill is really only needed to the bottom of the inside of the ornament. Adding infill everywhere will really increase the weight, which means it may not work on all Christmas trees.

For supports, I used:

- Support Placement: Everywhere
- Support Overhang Angle: 60 degrees
- Support Pattern: Concentric
- Support Density: 15%
- Enable Support Brim: Yes
- Support Brim: 3mm
- Support Roof Density: 75%
- Support Floor Density: 50%

If you print with 0.4mm walls and you wind up with holes in your print, I recommend increasing the flow rate slightly and maybe reduce travel and print speeds.


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**NOT TO BE SOLD**
**I'm sharing my files so that you can make them for yourselves or give them away as gifts. I hope you enjoy them. I do not authorize sale of my work by anyone. Please don't ask me.**

**ABOUT THE DESIGN**
Yep, this is yet another variation on my Christmas Balls with Integrated Stems. You can't keep a good designer down. There's no photo because my prototype is still printing. Still, it's 80% done and the rest is identical to other prints I;'ve published, so I already know it should work. Give it a try. It's relatively easy to print. 

**RESIZING**
This ornament should scale up well, but I'm not sure how much smaller you could print it using a consumer FDM printer. Using a resin printer, you could probably print it much smaller.

**PRINT TIME**
About 6 hours

**PRINT SETTINGS**
The trickiest parts to print is the top of the stems. Using FDM, if you don't temp, speed, flow, and cooling right, the thin parts of the stem will melt as you print. Thinner walls help. If that's not enough, try increasing the layer height.

*Thickness*

* Layer thickness: .15 mm
* Wall thickness: 0.4 – 0.8 mm.

I had the best results using Cura setting the default width to 0.4 mm and adding custom settings for the main ball that printed it 0.8 mm thick. You can do this by adding a support blocker to the bottom and giving it custom settings of 0.4 mm. Cura adds the two and prints the area within the blocker at 0.8 mm.

*Infill*
These do not need any infill. JUST DON'T DO IT.

*Speed*
* Outer Wall: 35 mm/sec
* Inner Wall: 40 mm/sec
* Travel SpeeD: 60 mm/sec

*Build Plate Adhesion*
I used a brim. With the supports, you shouldn't need a raft.

*Supports*
You will probably need supports for both bed adhesion and the overhang on the first few layers. You shouldn't need supports for the loop at the top. Adding them would just increase the chances the supports broke and caused the print to fail. If you get supports inside the ball, just add a support blocker.

* Support Structure: Normal
* Support Placement: Touching Buildplate
* Support Overhang Angle: 60 Degrees

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**ABOUT THE DESIGN**
This is a new variation on my Christmas Balls with Integrated Stems. It may be a little challenging to print. The key is to get the speed, temperature and flow right for your particular printer/filament combo so the stem prints cleanly at the narrowest point.

I printed this in Matterhackers Translucent Red. It's a nice balance between translucency and reflectivity. For an opaque filament, I'd use a multi-color PLA (like Matterhackers Quantum) or a medium toned silky PLA (gold, red, just use anything that's not really light or dark). Either type of filament would show off the facets nicely.

**NOT TO BE SOLD**
**I'm sharing my files so that you can make them for yourselves or give them away as gifts. I hope you enjoy them. I do not authorize sale of my work by anyone. Please don't ask me.**

**RESIZING**
These should scale up well, but I'm not sure how much smaller you could print them using a consumer FDM printer. Using a resin printer, you could probably print them much smaller.

**PRINT TIME**
About 4 hours.

**PRINT SETTINGS**
The trickiest parts to print is the top of the stems. Using FDM, if you don't temp, speed, flow, and cooling right, the thin parts of the stem will melt as you print. Thinner walls help. If that's not enough, try increasing the layer height. I decreased the print temp from my usual 200 to 190 for this, decreased the flow from 115 to 110, and increased the outer wall speed from 20 to 30 mm/sec. That was enough to go from stem that was molten goo to one that printed perfectly.

*Thickness*

* Layer thickness: .15 mm
* Wall thickness: 0.4 – 0.8 mm.

I had the best results using Cura setting the default width to 0.4 mm and adding custom settings for the base of the ball that printed it 0.8 mm thick. You can do this by adding a support blocker to the bottom and giving it custom settings of 0.4 mm. Cura adds the two and prints the area within the blocker at 0.8 mm.

*Infill*
This does not need any infill. JUST DON'T DO IT.

*Speed*
* Outer Wall: 30 mm/sec
* Inner Wall: 30 mm/sec
* Top/Bottom Speed: 30 mm/sec
* Travel Speed: 50 mm/sec

*Build Plate Adhesion*
I really relied on the supports for build plate adhesion. I used a brim, but I set it to 3.2 mm gap from the print so it would touch the supports but not the ornament.

*Supports*
You will probably need supports for both bed adhesion and the overhang on the first few layers. You shouldn't need supports for the loop at the top. Adding them would just increase the chances the supports broke and caused the print to fail. 

* Support Structure: Normal
* Support Placement: Touching Buildplate
Support Overhang Angle: 45 Degrees

I added a support blocker 75 mm x 75 mm x 110 mm set 15 m above the build plate so that the supports would only be added to the bottom of the ornament.

Christmas Ornament

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