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Deemoss

Acetone Smoothie

by Deemoss Dec 5, 2016
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do you have a code for the nano ?

What temperature do you set the heat bed to? (at what ambient temperatures - that's not irrelevant...?)
Thanks, and I wonder how you got that object through the bottle neck... :)

I set the bed at 70c considering that there the thermal conductivity between the bed and the jar is not great (acetone boiling point is 56c). But you can experiment to get the result you want.

Get the jar with the largest possible opening. But you are right, in the video of the 3d render it looks like the object would not fit in the jar the way it is currently mounted on the rod. However, if I flipped the object on the rod so that it goes in shoulder-first, it would still fit.

Thanks for the design, i'm currently contructing it. Could you maybe share the Arduino sketch you used for turning the motor? That would be a huge help, i'm just starting out with Arduino.

That safety issue may be a point, I am not sure. But maybe someone can make an alternative with a hand crank. It does not take so long, no need for a motor anyway.

Thanks for the input guys.

I have been using this for a year without even noticing any smell of the escaping vapour. The DC motor that I suggest (if a stepper motor is not used) is very low power, and no ventilation is required to cool it. This means that the motor should be sealed, or sealable, so no potential vapour enters it and interacts with the brushes (sparks). For a fire to start, a certain concentration of the acetone vapour is required, which I think is unlikely to form in this application, but not impossible! Using a stepper, has benefits and safety is one of them. Having said that, I do not even store Acetone indoors, just as a precaution.

As for hand cranking, I found that my (heated) smoothing takes between 10 and 30 minutes, so this is out of the question for me.

Comments deleted.

Maybe one can combine it with a PC Blower that blows the Aceton vapor away from the Motors.

I use a similar system, just hanging the parts under the lid, close the jar with it and put the whole thing outside in the sunshine. But than it takes some time until the parts are smooth and it only works on warm seasons.

I like the idea withe turning parts inside the jar and not giving up so fast. Hope there will be a nice solution ;-)

Be warn that DC motor create sparks. And acetone vapor is flammable

Thanks! Moved the warning higher up (it was at the bottom).