by ChrisMUC, published
##__Nonlethal Door Stop Multitool__ - __Optimized downside__ to Maximize the grip performance for holding the door in place, while on the other hand smoothly slipping in under the door when placed. If you want to _add more-extra-ultra grip_ to the downside of the door stop you can _use a rubbercoating_. I tried the spray-on version of Plastidip and it works really great for this purpose. For your information, this is what I used: http://www.plastidip.de.com/produkte/plasti-dip-flussiggummi/ And best of it: you can remove the coating easyly if you don't like the result. Probably you can find something similar near you in some DIY store, hardware store, home improvement store or in a shop for car supplies. I found it in an electronics store. - __Buckled upside__ to hold the door in a firm and secure grip. - __Extra Big hole (~42mm diameter)__ with Extra smoothly rounded edges to pull it out comfortably with 2 Fingers or even with gloves. - __Safekeeping by hanging it over the handle__ of the door is possible for most doors due to the Extra Big hole. So you have it at hand in a door stop / self defense emergency. - __Easier slipping under the door__ even with a small gap to the floor, due to smoothly rounded tip and optimized design of the downside of the tip (reduced size of the first to teeth). - __Suitable for ~4mm-40mm gaps__ without scaling. (Just a guess based of the dimensions, to be verified in experiment. Could be up to 50mm max.) - __Wall and handle protector.__ Put it behind the door to avoid slamming the door against the wall. (Try it with the round end facing the door, too. Depending on the size of the handle and the character of the floor this can give better results.) - __Windows can be kept open with it__, too. (Not talking about the software.) Try to put it in the gap at the hinged side of the window. - __Optimized for easy printing on FDM machines__ (i.e. Ultimaker, RepRap,...). You should be able to print it without outer support, for details see the section instructions. - __Childsave.__ It is big enough that it can't be swallowed and does not have sharp edges. If you print it with the right material it is non toxic, too. - __Portable.__ It is light weight and has an Extra Big hole to grab and attach to things so it is really portable. If you want to transport it with your bike, you could just hang it around the handlebar. You could also attach a string and hang it around your neck for transport. If you transport it with your car you can attach a string to the hole and hang it around your rear mirror as an ornament, too. - __No assembly needed.__ It is just one piece so you don't have to worry about a difficult and time consuming assembly. It is usable right off the printbed. - __Customizable.__ You can add some rubber coating to the downside to adjust the grip needed to the floor and door you want to use. - __Nonlethal__ self defense tool. Hold it with two fingers in the Extra Big hole and just think about it. If you know what a tactical pen is, you know what I mean. Probably this is the first tool you have at hand when the Zombies try to rush into your home... _Update:_ I thought about it again and probably this is not such a good idea, because the _Nonlethal Door Stop Multitool_ is nonlethal and the Zombies are already dead. Seems not to match. You could instead try to impress them with your printing abilities and try to involve them into some kind of communication about it. (It is even more probable that a Zombie will communicate with you about 3D-printing than the _Nonlethal Door Stop Multitool_ will do any serious harm to him or her...) __Caution: Update:__ As Gyrobot mentiond in the comment, there is a chance that the _Optimised Nonlethal Door Stop Multitool_ could be __lethal__, too. You could bore someone to death with it. I wonder if this could work with the Zombie issue mentiond above.... - __You can use it as an ornament__ by hanging it around your neck. The rappers hung alarm clocks around their neck in the '80s, so why not? - __You can use it to build a trap.__ Remove the handle of the door on the inner side, hold the door open with the door stop, attach a tripwire to the door stop. When somebody enters the room they release the door by the tripwire and the door closes. Works best with self-closing doors... - __Use it as communication enabler.__ Just put it on your desk at work. Somebody will ask what it is. And whoosh, you are right in the middle of a 3d-printing discussion. Don't forget to print the _Thing Tag_. Just in case you are asked... http://www.thingiverse.com/thing:200571/attribution_card - __Use it to test your 3d-printer.__ The Door stop is pretty easy to print, so the frustration factor should be minimal. And after printing you have something useful to play around with. And even if the print is not fully completed, it will probably work to stop a door. And failed prints tend to attract people, who ask you about it. A perfect print is good, but to induce communication a failed print is far better. - __Use it as door stop__ this is what it is intended to be. And it works pretty well for this purpose. - __Probably__ no one here reads so much text, so it seems not to matter so much what else I write here about the __mere unlimited possibilities__ you have with this piece of plastics. But if you have more ideas about how to use this tool, you are invited to post a comment. ##__Credits__ - The door stop was build from scratch and inspired by thing 144708, _Stopper of door No2:_ http://www.thingiverse.com/thing:144708. - The description was inspired by thing 35518, _Blockystar:_ http://www.thingiverse.com/thing:35518 - and thing 35560, _The Warble Wobble:_ http://www.thingiverse.com/thing:35560. Thank you for your inspiration. The design was developed in _FreeCAD_. http://www.freecadweb.org Thank you for making such a powerful software available to the public! __Thank you for visiting! Chris__ ###__Remixes:__ - __Remixed Non-Lethal Door Stop__ By __arod24__ [Amauris Rodriguez]: http://www.thingiverse.com/thing:368257 - __Door Stopper__ by __alexhbaiu__ [Alex Hbaiu]: http://www.thingiverse.com/thing:563123 Thank you for sharing your creativity!
I printed the door stop with these settings:
0,1mm layer (to produce a nice surface and to make it more stable.)
1mm walls (to make it strong enough to really stop a door.)
20% infill (If you don't use any infill the part will probably work afterwards, but the top surface could have problems because of the bridging needed. There is no extreme bridging, so it could work. I printed it with infill to make it stronger,too.)
With these settings and a speed of 50mm/s it consumed 4h 15m of printing time.
