* **Useless Now** [pic](http://www.flickr.com/photos/neilmccaffrey/5857780419/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i5o8n/28_useless_now/) by *possiblyneil*
* **The Pink Panter** [pic](http://min.us/mS6ZsPubUgYhK) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i72mp/28_the_pink_panther/) by *GavChap*
* **All sprung up** [pic](http://www.flickr.com/photos/25387542@N07/5865218672/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i7oah/28_all_sprung_up/) by *drflex*
* **Derailed** [pic](http://www.flickr.com/photos/64404802@N07/5865390676/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i7qj7/28_derailed/) by *Buckets2311*
* **Clock** [pic](http://www.flickr.com/photos/ivantalboys/5866443147/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i866u/28_clock/) by *italboys*
* **Green Machine** [pic](http://www.flickr.com/photos/30399879@N03/5868041012/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i8hwf/28_green_machine/) by *go_simmer-*
* **Gurgling Gas** [pic](http://www.flickr.com/photos/beepbooprobot/5871287636/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i99bk/28_gurgling_gas/) by *Yossarian42*
* **Blue Collar Machine** [pic](http://www.flickr.com/photos/darionanbu/5874730301/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i9x2m/blue_collar_machine/) by *draxxion*

OCD

* His days are numbered [pic](http://www.flickr.com/photos/jaxxon/3760511382/in/set-72157622833948302/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i5zgb/28_his_days_are_numbered_ocd/) by *jaxxon*
* Gears [pic](http://www.flickr.com/photos/the2belo/42987040/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i6uvj/28_ocd_gears/) by *the2belo*
* Hand-operated and flaky [pic](http://www.flickr.com/photos/notsosubtle/5541289621) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i8bkp/28_handoperated_and_flaky_ocd/) by *alexgreen*
* Gutted [pic](http://www.flickr.com/photos/odalisque/5867139761/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i8egg/28_gutted_ocd/) by *polavoid*
* Chinatown Bus [pic](http://www.flickr.com/photos/59982560@N04/5490763672/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/ia7hi/28_chinatown_bus_ocd/) by *redd_lawson*
* Eight stories up [pic](http://www.flickr.com/photos/64396072@N03/5864460096/sizes/l/in/photostream/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i7hpd/28_eight_stories_up/) by *nartarg*

Unverified

* (OCD per metadata) **Sometimes it's the little things…** [pic](http://www.flickr.com/photos/benthomasrockstar/5864375232/in/photostream/lightbox/) | [comment](http://www.reddit.com/r/PictureChallenge/comments/i7f8m/28_sometimes_its_the_little_things/) by *0obeno0*

Candidates of Challenge #28, "Machinery"