 | | Re: Melting Point of ABS (Re: Strengthening Gears) —Larry Pieniazek
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| | | (...) They're clearly not extruded... that's the kind Plastruct(R) uses. But if they're just plain molded and not impact grade I am hoping they are from the higher end of the range. The low end mold temp (and I agree with Thomas Avery's speculations (...) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Thomas Avery
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| | | | | (...) I measured the temp in my attic last summer and it reached 115 F. Needless to say I don't keep much up there and definitely not my Lego collection! ROSCO had a bad "melting" experience: (URL) think this was caused by prolonged exposure to (...) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Larry Pieniazek
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| | | | | | | (...) IIRC, I thought it was from the back shelf of a car... cars with no windows opened can easily get to 145 or even hotter. (hence the warnings about not leaving dogs or ferrets or cats or whatever locked in cars on sunny days, it will kill them) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —David Schilling
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| | | | | | | (...) That reminds me of a picture I just took in December at Legoland - the Grand Central Station in Miniland had an amazing bit of damage due to sunlight! Check it out at (URL) (big file - sorry) - look in the bottom right corner of the 'window' (...) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Ross Crawford
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| | | | | | (...) Not so prolonged exposure to gas heater! (URL) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Erik Olson
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| | | | | If you would just put your bricks in the kitchen oven you would make rapid progress with this question. Better yet, obtain a laboratory hot plate with fine temperature control and put a brick between two slides with a weight on top. Do this at (...) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Larry Pieniazek
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| | | | | | (...) I am in total agreement with this, including the 'you' (as long as it's not 'me'... advancement of science is fine but I ain't putting my bricks in no oven thank you) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —David Koudys
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| | | | | | (...) Yes, I can see how this would help the progress of scientific knowledge, but realize that technic pieces are hard to come by in the first place these days.. you cannot walk into your local toystore and pick up a supercar... that I'll take the (...) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Ross Crawford
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| | | | (...) My guess would be 109C may be more likely - I'd be surprised if they could mold it at 109F. I'm guessing my bad experience with the heater was well over 109F (they were quite close to it), and they didn't "flow" anywhere near enough that I'd (...) (22 years ago, 5-Mar-02, to lugnet.technic)
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| | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Jason S. Mantor
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| | | | IIRC, ABS is a thermoset plastic. The first time you melt it it's workable at a relatively low temp and solidifies nicely, but heating it again won't melt it, only deform it and finally burn it : ( -Xanthra47 Ross Crawford <rcrawford@csi.com> wrote (...) (22 years ago, 6-Mar-02, to lugnet.technic)
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| | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Ross Crawford
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| | | | | (...) That explains it. And it smells pretty bad too - that's what alerted me when I had my "accident". ROSCO (22 years ago, 6-Mar-02, to lugnet.technic)
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| | | | | | Re: Melting Point of ABS (Re: Strengthening Gears) —Erik Olson
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| | | | (...) No, it's thermoplastic. But too much heat, or even localized hot spots, can scorch it and make it unusable. (22 years ago, 6-Mar-02, to lugnet.technic)
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