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Customizable Chalice Lathe

by anoved, published

Customizable Chalice Lathe by anoved Mar 13, 2014

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Summary

Here is my Grail-o-matic: a customizable design you can use to make vases, cups, chalices, or even Tuscan pillars by rotating a profile you draw about an axis, as if on a lathe.

Part of the fun is designing your own Rubin vase illusion. See the faces in the negative space around the default design? You can make faceted columns as well as smoother cylinders by reducing the number of rotation segments.

The output is a solid model intended to be printed with no infill and no top layers. (Update: if you include the interior concavity in your cross section drawing, you can print with regular infill etc settings. Here's an example!)

Printing Tips

Here is a quick screencast showing how to use the polygon sketch control in Customizer to draw a profile for your chalice. Observe how I drag the cursor outside the box to ensure the drawing is flush with the top, bottom, and left edge (which is treated as the lathe axis by default). http://www.youtube.com/watch?v=1kMebhH0xIM

It is quite possible to make designs that are difficult to print without supports or infill, if at all. Pay careful attention to the slope of the lines you draw - steep horizontal overhangs will be trouble. For example, see the attached close-up. The overhangs in the design are translucent in my test print, and unfortunately somewhat porous (the rest of the print holds water).


Part of my Customizable Containers series.

Instructions

I printed the pictured test copy of the default design in brown PLA on my Printrbot Simple at 0.8 scale. 0.1 layer height; 4 perimeters; 0 infill; 0 top layers; 13 bottom layers.

As noted in the Printing Tips section of the description, it's watertight except for the steepest parts of the design, which came out a bit porous.

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It looks so great! As an environmentally protective person, I wonder what this is made of. My interest is finding the most compostable or green printing process, why not, when edible materials are abundant.

What´s the greenest on the market and can it be made in chokolade?

just generic pla is biodegradable. the processes that are used to make it not sure if those are green

umm, how do you hollow out

There are two ways:

  1. You can print hollow versions of solid designs like these exampleshttp://www.thingiverse.com/thi... by telling your 3D printer software (slic3r, for example) to use zero top layers. If you put no top and no infill on a solid model, it's hollow!
  2. You can make your own designs hollow by including a cutout when you draw the cross section. Here is an example.http://www.thingiverse.com/thi... If you do it this way, you shouldn't need to use any special settings.

I hope this helps. Let me know if not and I will try to explain it better.

Customizable Chalice Lathe
by anoved
Hollow Chalice with Solid Stem (How-To)
by anoved

Hi everyone! If you want to exercise more control over the interior shape of your chalice or if you can't readily print a solid model without any top layers, just include the concavity in your profile drawing.

Here's an example: http://www.thingiverse.com/thing:272597http://www.thingiverse.com/thi...

Hollow Chalice with Solid Stem (How-To)
by anoved

Nice use of the draw widget! :) Is there anything you would change about how the widget works?

Thank you!
In many cases, I think it would be easier to use if you could place one point at a time with individual clicks. Drawing a trail of points by dragging while holding down the mouse button is nice for making smooth curves, but difficult to control precisely. For example, it took me maybe 20 attempts to draw the satisfactory profile seen here (often because I would accidentally release the button too soon).

Alternatively, a way to edit (move/add/delete) vertices would let you fix drawings without requiring them to be redrawn entirely.

Anyway, I'm working on another draw widget based customizer now. I'll post it once I get a chance to print a test copy.

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