Editing Great ball contraption (section) From The Great Ball Contraption Wiki PageDiscussionEditHistory More... What links here Related changes Upload file Special pages Page information Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits. This page supports semantic in-text annotations (e.g. "[[Is specified as::World Heritage Site]]") to build structured and queryable content provided by Semantic MediaWiki. For a comprehensive description on how to use annotations or the #ask parser function, please have a look at the getting started, in-text annotation, or inline queries help page.Anti-spam check. Do not fill this in! == Building Tips == Because GBC modules necessarily involve mechanisms, [[b:Technic|Technic]] [[brickwiki:elements|elements]] and building techniques are frequently the basis of a GBC. However, creative use of non-Technic elements can substantially increase how well a GBC is received by both the public and [[brickwiki:AFOL|AFOLs]]. Another key design factor is reliability, especially if the GBC will be part of a collaborative display. A GBC that works for 15 minutes before breaking down is fine at home, but at a 6-hour show it would break down 24 times—a significant hassle. Another common problem is "leakiness", that is, having balls travel anywhere outside their intended path (usually onto the floor). Before taking a GBC [[brickwiki:MOC|MOC]] to a public show, run it non-stop for about an hour to get a good predictor of its reliability and leakiness. Some rules of thumb: * Batches of balls behave differently than single ones. A module's behavior when receiving a batch of 30 balls can be very different than when receiving balls one at a time. Test both conditions. * If it can jam, it will. Design modules so that they clear themselves, tolerate a few stuck balls, or fail gracefully. Avoid designing such that when there's a jam, something has to break. Use of [[b:Part:60c01|clutch gears]], [http://education.lego.com/en-us/preschool-and-school/upper-primary/8plus-machines-and-mechanisms/constructopedia/ belt drives] and flexible elements can help keep disaster at bay. * Funnels jam. Avoid passages that narrow. If unavoidable, provide some kind of agitation to keep balls moving. * Dead spots bother people. Frequently there will be places in a GBC where balls will park themselves. This isn't technically a problem as long as a stopped ball doesn't block the flow. However, onlookers will invariably let you know a ball is "stuck" and will instinctively reach out to free it. Modelers who don't want people touching their MOCs may want to eliminate such dead spots. * Gears break. Smaller ones are especially prone, such as the [[b:Part:3647|8-tooth]] and [[b:Part:6589|12-tooth bevel]] gears. They should either be used where the maximum possible torque is limited or where they are easy to replace. * Display tables aren't level. Modules which work great on a level table can suffer horribly when tilted slightly. Test with each edge lifted by one or two plates, or be prepared to fiddle with leveling it when on display. * Recirculation helps. A module which can feed balls to itself is not only cool, but it simplifies testing and allows it to be displayed as a stand-alone GBC. Summary: Please note that all contributions to The Great Ball Contraption Wiki are considered to be released under the a Creative Commons Attribution-ShareAlike 3.0 license (see GBC:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here. You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission! Cancel | Editing help (opens in new window) Retrieved from "http://greatballcontraption.com/wiki/Great_ball_contraption"