crazy idea for stopping ABS warping June 22, 2015 02:12PM |
Registered: 9 years ago Posts: 280 |
Re: crazy idea for stopping ABS warping June 22, 2015 02:26PM |
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Re: crazy idea for stopping ABS warping June 22, 2015 03:10PM |
Registered: 11 years ago Posts: 335 |
Re: crazy idea for stopping ABS warping June 22, 2015 03:24PM |
Registered: 9 years ago Posts: 396 |
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691175002
Exactly how does immersing the print in a 70c vat of silicone oil reduce warp more than printing in a 70c heated chamber? Why would printing into a liquid reduce warping?
Re: crazy idea for stopping ABS warping June 22, 2015 03:34PM |
Registered: 11 years ago Posts: 5,780 |
Re: crazy idea for stopping ABS warping June 22, 2015 04:26PM |
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Re: crazy idea for stopping ABS warping June 22, 2015 04:48PM |
Registered: 11 years ago Posts: 335 |
Quote
shadowphile
A liquid has a much higher heat-capacity and conductivity than air and would provide a much more gradient-free thermal environment for the part.
There are better ways to keep the heat contained. Stratasys keeps all electronics, motors and even the extruders at ambient temperature. ( [forums.reprap.org] )Quote
shadowphile
Keeping the soaking region small would limit exposure of the rest of the printer to high temps as in the enclosed approach.
Re: crazy idea for stopping ABS warping June 22, 2015 06:38PM |
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Re: crazy idea for stopping ABS warping June 22, 2015 08:29PM |
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Re: crazy idea for stopping ABS warping June 24, 2015 03:19PM |
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Re: crazy idea for stopping ABS warping June 26, 2015 06:45PM |
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Re: crazy idea for stopping ABS warping June 30, 2015 07:42AM |
Registered: 10 years ago Posts: 73 |
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Qcks_
The bulk coefficient for ABS does not work because ABS is not a homogeneous polymer; rather it's more like a micro emulsion (it's like milk or lotion), with partial solvation of different constituents occurring at slightly different concentrations through out the mixture.
Re: crazy idea for stopping ABS warping July 01, 2015 03:31PM |
Registered: 9 years ago Posts: 52 |
Quote
DonaldJ
Quote
Qcks_
The bulk coefficient for ABS does not work because ABS is not a homogeneous polymer; rather it's more like a micro emulsion (it's like milk or lotion), with partial solvation of different constituents occurring at slightly different concentrations through out the mixture.
Wandering a bit off-topic, this is inline with what I have observed with containers of old ABS slurry; it separates into layers. It's as if the acetone melts the ABS but doesn't dissolve it.
Does acetone break down the polymers and only dissolve part of what we refer to as ABS?