Tag Archives: material

3DP News – Polymaker Fabricates & Tests a 3D Printed Car Jack Using UM2 Extended+ and PC-Max

PolyMaker is known for their innovative approach to materials. Nicolas Tokotuu (Communication manager, 3D printing engineer and designer for PolyMaker) has performed a fun strength test utilizing one of their new materials, Polycarbonate (PC-MAX).

They designed and printed a car jack on an Ultimaker 2+ extended and subsequently tested it on a car. They want to stress that it isn’t recommended as a replacement for a proper jack, this was just to illustrate the strength of the material. The jack did function but due to the time it was taking and torque required it was faster to use a metal jack first then finish the last few turns to lift the car. Nicolas says if they had to do it again, they will remember to lubricate the screw. 😉

They used 80% infill and printed the screw perpendicular to the thread orientation for strength.

From an announcement post at 3ders.org abut PC-MAX:

So what’s so special about PC-Max? In a nutshell, it features mechanical properties that you rarely see in 3D printing materials and is far stronger and more impact resistant than any other Polymaker material. “Polycarbonate has properties that make it very desirable for the 3D printing community as a whole, and PC-Max™ makes it even better for creative designers and engineers at every stage of the production process” added Dr. Luo. PC-Max is also easier to 3D print than PC-Plus, which was 3D printed at 300°C – 320°C. In contrast, PC-Max can be 3D printed at a moderate 250°C – 270°C.

From the Polymaker site:

Polymaker PC-Max™ is an advanced polycarbonate based filament designed specifically for desktop FDM/FFF 3D printing. In addition to high printing quality, great mechanical strength and heat resistance, Polymaker PC-Max™ offers excellent impact strength and fracture toughness, making it the ideal choice for engineering applications.

Read More.

 

Digital Fabric

Vladimir's Digital Fabric

Vladimir’s Digital Fabric

Digital Fabric

Digital Fabric

YouMagine Community Member Vladimir Kuznetsov uploaded a wonderful design. His design “Digital Fabric” uses a really wonderful technique. He uses the Cura Pause at Height plug in to pause the print and then inserts a mesh like fabric which he fixes to the print. Then he continues the print. This lets you use regular PLA and then make flexible parts! His great idea coupled with his triangle design really makes a lot more possible. Vladimir has tried out a mosquito screen as well as nylon. Were curious to see what other materials would give great results. Many people are experimenting with fabrics and 3D printing. Usually people end up getting a result similar to chain mail that is rather limited. A lot of other 3D printed fashion is stiff and unwearable. We think that by mixing cloth and printed material Vladimir made a wonderful alternative.

Here you can see the Digital Fabric being 3D printed.

Here you can see the Digital Fabric being 3D printed.

Vladimir’s instructions, is to pause “when half of the part will be completed (1 mm for a part of total height of 2 mm) and to lower the buildplate for 50 mm or so. When printer will pause the printing stretch a piece of mesh-like fabric (I played with my wife’s stockings, but best results achieved with mosquito screen) and fix it with scotch tape. Unpause the printer.”

Importantly he adds, “You could make a lot with that technique, just make sure that the fabric thickness is less than the layer height.” We asked him some questions via the email and here’s how he explains his project:

“First thing I made was a small purse. I made a sexy simple polygonal design, printed two same pieces and asked one of the girls in our lab (fablab77.ru) to sew them together. She did it, but she also said that the purse is just like some Issey Miyake bag design.. so, thanks to google, I learned about trendy Japanese designer))
  
I borrowed a pair of my wife stockings and have learned that as long as the hot end does not touch the fabric, they can be used. So, I would say, any screen-like, mesh-like, net-like material is suitable, as long as it thickens is less than the thickens of one printing layer (I even thought of metals, but did not have a chance to try). Having that in mind, I found large nozzles very useful for this kind of duties. With broader (0.6 or 0.8 mm) lines large flat patterns are filling much faster, plus, thick layers (0.25…0.3 mm) are not only speeding up the printing, but make you caring less about thickness of the fabric. 
 
I also tried printing with flexible materials and it allows to create interesting results, but printing flexibles with bowden extruder and retraction enabled is.. you know.
 
Difficulties.. You have to be near the printer when half of the print is complete. Cura lets you pause the process at an exact height, but you can not leave the print overnight, to receive good results you have to unpause the printer in ten to thirty minutes, otherwise, in my experience telling the print is gonna be ruined.
It is also quite challenging to put the fabric and evenly stretch it and then fix to the build plate. Scotch tape is your number one friend. For the mosquito screen I glued pieces of velcro (the rigid half) to the perimeter of bottom side of the building plate.”