How does the 3D Printed OctaWorm actually work?

Friday, November 20th, 2015

Rescue workers have been faced with many challenges when it comes to rescuing people who have been draped under collapsed buildings. In this regard, such workers often find it difficult to locate and reach people who have been draped under collapsed buildings. Additionally, the traditional rescue robots cannot traverse some spaces in the quest to rescue survivors. However, these challenges presented to the rescue workers and traditional rescue robots have been solved by the use of the OctaWorm. This is deformable, small robot that is capable of negotiating and exploring all kinds of spaces. This robot can traverse all kinds of spaces that have been challenging most of the traditional rescue robots. The OctaWorm was developed through the project by the University of Akron and the University of Chile. Juan Cristóbal Zagal is a person who is credited for designing the OctaWorm itself. The joinery parts of the robot that facilitates the connection of the electric linear actuators were developed by the use of 3D printing. Additionally, the 3D printing was also used in producing ball joints of the robot.


The Working Mechanism of the 3D Printed OctaWorm

The 3D printed OctaWorm’s ball joints were created by the use of Stratasys Objet 3D printer while the rest of the printed 3D printed parts were developed by the use of the FDM 3D printer. The robot consists or rubbery balls located at the end of its legs. Such rubbery balls which provide it with the ability to traverse through and grip onto various materials and terrains. This is achieved by OctaWorm’s 3D printed ball joints which facilitate and controls the deformation motion, making it possible for the robot to assume various configurations and shapes. The robot’s basic structure consists of 3D printed parts with aluminum rods that make its legs durable.

3d print foam

The OctaWorm is a small robot that is capable of squeezing it into cracks, crevices and gaps of piles debris that have been formed due to structural damage. This is achieved through changing its real size in order to fit the situation required. It can expand when necessary and also constrict when entering into small cracks, crevices, and gaps. It is worth noting that the main aim of developing the OctaWorm was the need to navigate and access confined spaces ire voids and cracks within disaster environments, air ducts, and pipes. In addition to traversing inside pipes with small diameters, the OctaWorm can also able to deal with the changes within the pipe’s internal diameter. This means that the robot can change its shape and size in accordance to the pipe’s internal diameter.


The robot’s functional symmetry facilitates it to negotiate as well as travel along Y, T and L joints within pipelines. This has been hitherto a problem for the traditional rescue robots as well as rescue workers. Particularly, the conventional in-pipe robots were incapable of traversing through such kinds of junctions. On the contrary, the deformable OctaWorm robot could simply squeeze into a variety of junctions. There are three prototypes of the OctaWorm. The deformable robot’s third prototype has been undergoing various modifications since it was designed by Juan Cristóbal Zagal.


The initial two models of the robot used syringes in order to move its joints accordingly and it was run by small hydraulics whereas the second prototype’s joints were run utilized electronic actuators. Further, the joints of the modern version of the robot use pneumatic-driven servo motors that are more reliable than electronic actuators. Despite the fact that the robot is currently operated by a wired controller, there is a possibility that future prototypes will be operated wirelessly.

3 Terrifying Doctors Who Practiced Medicine for Years

Monday, October 5th, 2015


Doctors are supposed to be there to help their patients, but sometimes they have other things on their mind. These terrible doctors traumatized their patients with gross violations of the Hippocratic Oath.

The Pediatrician Who Molested and Raped His Young Patients

Every parent wants to make sure their child is happy, which is why a good pediatrician is so important. But just because someone has a license and a successful practice doesn’t mean they should be left around your kids.

Described my news outlets as “the worst pedophile in American history,” Earl Brian Bradley is every parent’s nightmare as he used his position as a pediatrician to molest and rape over 100 child patients -some as young as 3 months old.

From the outside, Bradley’s office looked like a great place to get your child comfortable around doctors, with carnival rides, a small theater showing Disney films and all kinds of kid-friendly decorations. For almost ten years Bradley worked in the town of Lewes, Deleware, but then Bradley’s own sister informed the state’s medical society of patient complaints about the doctor‘s inappropriate touching of their children. In 2009, Bradley was arrested and accused of nine counts of inappropriate touching including the fourth degree rape of a two-year-old patient. Then police found more than 13 hours of video footage from the doctor’s office showing even more rapes and molestations.

Eventually, Bradley was charged with 471 charges of molestation, rape and child-exploitation. He was convicted for every charge and sentenced to 14 consecutive life terms plus 165 years in prison without parole.

The Doctor Who Modified Patients’ Vaginas Without Consent

If women have been having sex and delivering babies since humanity began, their anatomy is probably just fine when it comes to those two things, but Dr. James C. Burt disagreed with nature, writing, ”women are structurally inadequate for intercourse. This is a pathological condition amenable to surgery.”  The surgery in question was one he specially created that he believed would turn women into ”horny little mice” by increasing their sexual responsiveness. More specifically, he would remove the hood of the clitoris, reposition the vagina, move the urethra and alter the walls between the rectum and the vagina.

In fact, the surgery often left women with sexual dysfunctions, scarring, permanent physical damage and chronic infections of the kidney bladder and vagina, but that didn’t stop Dr. Burt from experimenting on hundreds of women without their permission over the course of 22 years  -usually after a pregnancy. ”The patient,” he wrote, ”had not been informed that anything more had been done to her than delivery and episiotomy and repair, or ”Yes, you had stitches with your delivery.’ ” It’s worth noting that the doctor was never even certified by American Board of Obstetrics and Gynecology nor was he a licensed surgeon.

When his crimes finally caught up with him, he claimed his accusers were ”dissatisfied women who may have had complications, who may be lying, who may have had positive feelings turn negative when forced to pay the bill and women who stand to make a lot of money from the lies.” Despite his claims of innocence, the doctor voluntarily surrendered his license in 1989 and later declared bankruptcy after multiple lawsuits left him owing $21 million. Amazingly, Burt never faced criminal charges for his acts and died in 2002 without ever once seeing the inside of a jail cell.

The Doctor Who Impregnated Patients With His Own Sperm

When a woman goes to a fertility doctor seeking artificial insemination, she’s not asking the doctor to donate his own sperm -but that’s just what Cecil Byran Jacobson did in anywhere between 15 and 75 cases. Despite having no specialist training in infertility medicine, Jacobson operated his own reproductive genetics center. During his time as a doctor there, he offered to help artificially inseminate patients with sperm from screened, anonymous donors -only the samples weren’t from anonymous men, they were from the doctor himself. As if that weren’t bad enough, in one case the doctor even switched his sperm out with the husband of a women undergoing the procedure. At least fifteen of Jacobson’s  patients have discovered the doctor fathered their children and some estimate there are up to 75 kids in this world that were born thanks to the doctor’s unethical practices.

Jacobson maintains that he acted in the right and that he only supplied samples when donors failed to show up and a patient was about to complete her fertility window -and in the case where the woman’s husband was supposed to supply the sample, he claims it was a simple mix up in the laboratory. Despite his claims and appeals, the doctor was convicted of 52 counts of mail fraud, wire fraud and perjury. Surprisingly though, he was only sentenced to five years in prison and the loss of his medical license and has been out of prison since 1997.

Wanna read more medical horror stories? Then don’t miss this Oddee article featuring eight doctors that seem to have been sent from hell.


Image via paul

7 Dirty But Fascinating Evolutionary Theories

Wednesday, April 24th, 2013


Let’s talk about sex baby… or at least, lets talk about the evolutionary reasons we do it the way we do. For example, why do women have orgasms if they don’t play a direct role in getting them pregnant? Well:

One theory states that women have orgasms only because men have orgasms and, like male nipples, they are something that both sexes develop even if only one gender needs them. Other researchers argue that because orgasms feel good, having orgasms makes women more interested in sex, thus making them want to have sex more often, which would make them more likely to get pregnant. Yet another theory states that when women orgasm anytime between a minute before or forty-five minutes after the man ejaculates, their bodies retain more sperm.

Here are seven fascinating  theories behind our sexual evolution.


30 Cool Facts Shared On Reddit

Tuesday, September 27th, 2011

Did you know otters hold hands while sleeping so they can stay together. Learn more cool facts here.

Does Marijuana Reduce Obesity?

Thursday, September 22nd, 2011

Sure everyone jokes about how pot smokers are a bunch of lazy stoners who sits around and eat junk food all day, but despite the stereotypes, a new study shows that pot smokers are actually much less likely to be obese than those that don’t indulge.  So you can put your stereotype in your pipe and smoke it.

10 Stupid, But Common Drug Myths

Wednesday, September 7th, 2011

No, mushrooms don’t make your brain bleed, selling LSD can’t get you arrested for murder and LSD doesn’t stay in your spinal fluid forever. Read the rest of the myths and the truth here.

A Collection of Fascinating Spider Facts

Wednesday, August 31st, 2011

If you aren’t arachnophobic, then you’ll probably really enjoy this list of amazing spiders. If you are afraid of spiders, then just pretend those are all ants above.

The 10 Scariest Ghost Recordings

Sunday, July 17th, 2011

While I believe I have had first-hand experience with the paranormal, I also believe that a lot of the “evidence” backing it up is just bull. That’s why I love this Oddee article that lets you decide which recordings are real, and which are fabrications or coincidences.

Never Piss Off A Crow

Friday, July 15th, 2011

A recent study has shown that crows remember the faces of people who wrong them. Not only that, but they’ll recruit other birds to mob the wrong-doer and then the crows in the mob may remember that person’s face and attack them later on.