 | | Re: Melting Point of ABS (Re: Strengthening Gears)
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(...) That explains it. And it smells pretty bad too - that's what alerted me when I had my "accident". ROSCO (23 years ago, 6-Mar-02, to lugnet.technic)
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| | Re: lube
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(...) I dunno. Does it still squeak even when the pumps are disconnected? I've noticed with my compressors, the extra back pressure on the plunger causes more squeaking, which disappears when pressure is released. I'm not even sure whether it's the (...) (23 years ago, 6-Mar-02, to lugnet.technic)
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| | Re: Melting Point of ABS (Re: Strengthening Gears)
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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 (...) (23 years ago, 6-Mar-02, to lugnet.technic)
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Hi everyone, I noticed that teflon was not listed in the lube faq. It can be purchased at bicycle shops in an aerosol can or dropper for under 10 dollars. It is a dry lubricant that is clear and doesn't attract dust. I used it with my clock and was (...) (23 years ago, 6-Mar-02, to lugnet.technic)
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| | Re: Strengthening Gears
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Wow ! Interesting results. I would have bet my firstborn that it would weaken them. Anyone else try this ? I might just to see if Tobbe's result is a fluke... (23 years ago, 6-Mar-02, to lugnet.technic)
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| | Re: Melting Point of ABS (Re: Strengthening Gears)
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Thomas: Lego uses primarily Bayer Novodur (and apparently to some extent Bayer Lustran) for its bricks. The exact composition of the Novodur is of course, like the recipie for Coke, is top secret, but it is probably closest to Bayer Novodur P2M-V A (...) (23 years ago, 6-Mar-02, to lugnet.technic)
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| | How about this for a technic challenge?
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Using bricks instead of balsa, of course 8?) Could you build a 100g LEGO bridge that can support 209kg?????? (URL) (23 years ago, 6-Mar-02, to lugnet.technic)
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| | RE: SNOT - What's the commotion about?
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(...) SNOT techniques in non-Technic building are generally quite different from Technic construction because the goals are different. The goal in non-Technic design is to fill in gaps as well as possible while adding lots of detail, and while using (...) (23 years ago, 6-Mar-02, to lugnet.technic)
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| | Re: "One set" pulling challenge
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(...) Well, look at it this way: for now, you hold the #1 spot in the 8466 category! TJ (23 years ago, 5-Mar-02, to lugnet.technic)
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| | "One set" pulling challenge
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Well, I got the first version of my 8466 puller done, but it can only lift 200g 8?( Back to the drawing board... ROSCO (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: Melting Point of ABS (Re: Strengthening Gears)
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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 (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: Melting Point of ABS (Re: Strengthening Gears)
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(...) Not so prolonged exposure to gas heater! (URL) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: SNOT - What's the commotion about?
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(...) Oh really? What about the plane you did for last year's town comp with the upside down windows? (sure nobody else could see it, but the SNOT was there). I'm sure it'll simple happen when the need arises (wait till you try to build more stuff (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: SNOT - What's the commotion about?
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(...) It's not a big deal at all for Technic builders, who are very familiar with building on all aspects and directions. However, for Town and Train builders, this is a major departure from the way Trains have normally been done. Building on side (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: SNOT - What's the commotion about?
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(...) Well in using a piece on its side, or upside down, one can achieve new geometry, new shapes, new orientations etc. I guess the possibilities are endless. Too bad I have little or no experience using SNOT-techniques. -Bryan (23 years ago, 5-Mar-02, to lugnet.technic)
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| | SNOT - What's the commotion about?
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I've heard many builders incorporate the SNOT method into their creations. As far as I can tell this means that the Lego piece is turned on its side or upside down. Am I missing something because this does not seem impressive to me at all. What's (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: Strengthening Gears
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(...) So what caused the rash? Jude FUT .fun (23 years ago, 5-Mar-02, to lugnet.technic, lugnet.fun)
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| | Re: Melting Point of ABS (Re: Strengthening Gears)
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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' (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: Melting Point of ABS (Re: Strengthening Gears)
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The "service" temperature is the limit at what you should operate it at. The "mold" temperature is how LOW the mold has to be cooled to get a good shot. The "processing" temperature is the temperature the plastic has to be when it enters the mold. (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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| | Re: Strengthening Gears
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I have never broken a gear. But then, I am a mechanical engineer; I am nice to my gears. But I fry a lot of electronics! My experience is that the torsional stiffness of the axles is the limiting factor of high-torque designs. I have permanently (...) (23 years ago, 5-Mar-02, to lugnet.technic)
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