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Wednesday, November 14, 2007

Extruder output profile

Trying to nail the parameters on the Bath Darwin, I realised that the only factor I'm flying slightly blind on is the output of the extruder. Here's an output profile for Capa using a target temperature off 100 °C and a ΓΈ 0.4mm nozzle for a variety of motor speeds.



WARNING: 12V motor used in this test. (i.e. Don't put 12V through the standard issue 6V motor!)
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7 comments:

  1. Forrest HiggsNovember 14, 2007 3:32 PM

    So am I reading it right that at maximum settings you can push roughly 10 cm^3 of CAPA through your Mk II per hour?

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  2. eDNovember 14, 2007 5:02 PM

    Yeah, bout that. Running ours at 210 so looking at ~ 7cc/hour

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  3. Steve DeGroofNovember 14, 2007 6:16 PM

    What's the total volume of the RP Darwin parts? Somewhere around 1000cc? So the current Darwin "gestation" time would be roughly a week, assuming continuous operation.

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  4. Forrest HiggsNovember 14, 2007 11:06 PM

    So have you been printing anything with CAPA yet?

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  5. vik-olliverNovember 15, 2007 5:10 AM

    PLA Is currently coming out at 5cc/hr, but could probably come up to 8-10cc/hr-ish too.

    Oh, looks a lot like there's a repetitive sinusoidal component there.

    Mind you, enough beer and anything looks sinusoidal...

    Vik :v)

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  6. ViktorNovember 15, 2007 6:51 AM

    Hi Vik,

    ... i thin there are two possible sources for the sinus: first the rotating/pressing of the thread, second the temp-controlling process ...

    Viktor

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  7. eDNovember 15, 2007 11:13 AM

    My previous sinusoidal issues have all been solved by hunting out the eccentrics...

    ReplyDelete