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PLA annealing high temp PLA

Discussion in 'Printing Filament' started by joea, Jun 2, 2020.

  1. joea

    joea Active Member

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    Using Raptor HP PLA, "Dishwasher Safe" for use in a dishwasher

    I don't have a dedicated toaster oven and do not want to risk befouling my main oven, as that has been warned against.

    So my choices are, buy a new toaster oven and dedicate it to the occasional annealing, use boiling water with the part suspended above the bottom or trying a propane grill, out of door

    I've read some caveats against the water bath, but a test today on some failed prints ended up being "in water" despite the "canoe" I built for it. I see no evidence of harm from that and so far, only a slight color difference. in annealed and non annealed parts.

    Tomorrow I may test the gas grill, but kind of doubt I can keep the temp down to 100 C.
     
    #1 joea, Jun 2, 2020
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I went with a cheap toaster oven :) The downside with it was that temperature was not clearly marked on the controls so I had to use a thermometer to get the points I wanted and mark them on the dial.
     
    #2 mark tomlinson, Jun 3, 2020
  3. joea

    joea Active Member

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    And, so, do the caveats about :"never use for anything else again" really apply, or is that only for those still suffering a spousal burden?

    I ask, as I have to go buy one, new, apparently and am debating getting one with more than minimal size and function.
     
    #3 joea, Jun 5, 2020
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I would not say that. You can still use it for a Toaster oven :) It is not like it gets contaminated -- here is the style I use -- not this exact one, but this style:

    Sunpentown-SO-2000-Super-Turbo-Oven.jpg

    Top pops off for cleaning and if you wanted to cook something else in it you could. The one I have fits a spool inside with the extra racks removed.
     
    #4 mark tomlinson, Jun 5, 2020
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I haven't needed it in a good while since we got the workshop a dehumidifier :)
     
    #5 mark tomlinson, Jun 5, 2020
  6. joea

    joea Active Member

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    Ah, so you use it more for a filament prep than an annealing oven? Looks more like an "air fryer" to me. But what do I know?
     
    #6 joea, Jun 5, 2020
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It is not exactly an air fryer, but it works somewhat the same. I don't use it for annealing (because I don't do annealing) I used it for drying the filament. Like I said been shoved in the corner of the workshop for a long time :) The dehumidifier makes it moot (at least for that). I did use it once or twice for actual food :)
     
    #7 mark tomlinson, Jun 5, 2020

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