Help 3D print no walls

Hi I am new to sketchup, I created a model and sent to a 3D printing site. They replied saying the model had no walls? It was not able to print.

Can anyone enlighten me, thank you

Needs more information. Please upload the model (using the seventh icon above the area where you write your post).

If it is bigger than 3MB, please use a file sharing site and provide a link to the file – use 3Dwarehouse, Dropbox, OneDrive, Google Drive or similar.!AhWZEr_Ayb_tnwZx9QmaT9dFEuqN

Try this, otherwise I will be able to upload in an hour

I can confirm that the download works. Just looking at the model.

There are several problems that prevent this model from printing.

1 Most of your faces are reversed.
Select all, then R-click/Reverse Faces. Select one that is the right way out, then R-click on that, and Orient Faces.

2 The model isn’t made into a group or component
Select all, the press keyboard letter g and make it all into one component

3 The model isn’t solid
TIG Solid Inspector2 says there are problems with Surface Borders (the surface isn’t closed) and highlights two areas:

This may have happened when SU tried to create faces that are too small. I can repair the top right one by drawing the missing face on the very small end with the Rectangle tool.

There are also 17 internal face edges, highlighted here in Xray view by Solid Inspector2.

I’m sorry I haven’t time to track down how to fix those.

Here’s a partially fixed model.
motec v7 partially fixed.skp (1.2 MB)

BTW, none of the dimensions seem exact in either mm or inches. Should they be?

Try this one.
motec v7 fullBox.skp (46.9 KB)

Thanks, Box. Looking good.

It still has a very thin bottom and some rather tight points, but it is a full solid.!AhWZEr_Ayb_tnwokcu0WfRp0X26v

Thanks guys, I made changes called v9 now.

That is awesome help.

If I want to make the bottom a little thicker, say to1mm how do I do that now? Will 1mm be thick enough.

Thanks once again:)

Markforged Introduces Two New Industrial 3D Printers For Local Manufacturing

CAMBRIDGE, Mass.–(BUSINESS WIRE)–Markforged, the only 3D printing platform that prints the entire range of strong parts from carbon fiber to metal with a complete cloud managed 3D solution, today announced the addition of two new printers to the company’s Industrial Series. Markforged’s new X3 and X5 printers introduce price points that enable customers to print stronger, larger, and lighter parts.

Local manufacturers are often at a disadvantage because they are forced to choose between the sub-par strength of printed parts and long lead times associated with machined parts. With the arrival of the X3 and X5 printers, Markforged has made industrial strength printing financially attainable for every manufacturing business, allowing them to better compete on a global stage.

The X3 is powered by the incredible material strength and stiffness of Onyx, a high temperature capable carbon fiber filled nylon. The X3 prints strictly engineering grade thermoplastic fiber parts, and is available at the disruptive price point of $36,990.

The X5 adds the ability to reinforce an Onyx part with a strand of continuous fiberglass, making it 19X stronger and 10X stiffer than traditional plastics. The X5, workhorse of the industrial line, has the unique ability to deliver parts that are both strong and affordable for only $49,900.

The X7, previously known as the Mark X, remains Markforged’s flagship Continuous Carbon Fiber (CCF) industrial printer platform, yielding 23X stronger parts than with ABS materials. The X7 boasts the industry’s only sub-$1M in-part laser inspection for reliable quality control with a price point of $69,000.

Customers can future-proof their investments as Markforged offers an affordable, industry-exclusive upgrade program allowing customers at any time to leverage their initial investment in an X3 to upgrade to an X5 or X7, gaining access to higher strength materials and inspection utilities.

Long time Markforged customer Dixon Valve, a 100-year-old hose fittings and accessories company, has accelerated their manufacturing in part powered by the use of Markforged printers. The company was able to bring their high strength printing needs in-house, saving both time and money and arriving at a more efficient process that has helped to drive their position as a consistent industry leader.

“Our first Markforged printer paid itself off in less than 1.5 months and saved us over 81% versus machining,” said Bill Hollingsworth, vice president of engineering at Dixon Valve. “This is why we’re excited to be first in line to bring the capabilities of one of Markforged’s new industrial line printers in-house.”

All Markforged printers share a single software ecosystem built on a next generation, cloud-based platform designed from the ground up to protect intellectual property.

“For 30 years, 3D printing customers have been forced to accept trade-offs between strength, time, and affordability — lacking the opportunity to benefit from all three. With the complete Industrial Series and new Metal X printer, these trade-offs no longer exist,” said Greg Mark, Markforged’s founder and CEO. “Customers can now, with ease, print same-day parts that optimize strength and affordability for their specific needs.”

To learn more about the Industrial Series, visit

About Markforged
At Markforged, we are on a mission to fuel the next 10x innovation in design and manufacturing. We build an Industrial 3D Printing Platform to liberate designers and engineers from decades-old, slow part creation processes.

NASA, Google, Ford, Amazon, General Electric and thousands of companies in 50 countries use Markforged to print same-day prototypes and produce stronger end-use parts than they did before. With Markforged, customers are able to ship 50% faster, spend 20% less, and build 20% stronger products.

The Markforged platform includes a full ecosystem of 3D printers for metal, composite, and plastic parts; purpose-built metal & carbon-reinforced materials for strength and beautiful finishes; and cloud software for turning drawings into high-strength printing.

For more information, and to learn why Markforged has grown over 300% in 2017, visit

CONFIDENTIALITY NOTICE – The contents of this email message and any attachments are intended solely for the addressee(s) and contain Proprietary Information. If an agreement such as a Non Disclosure or Proprietary Information Agreement (collectively “NDA”) becomes effective between the parties, you are hereby notified that the contents of this email, and/or any meeting, telephone call, presentation, or other oral or visual communication between the parties that is referred to herein, are Proprietary Information under the NDA unless otherwise specified. Employees or contractors of departments or agencies of the United States are hereby notified that this email contains information that concerns or relates to the trade secrets, processes, operations, and/or style of work of Markforged, Inc., under the Trade Secrets Act (18 U.S.C. § 1905)

Firewatch Radio 3D Model for 3D Printing – With Bonus Red Radio

We’re sure RedOrb would love to see what you’ve printed. Please document your print and share a Make with the community.

To post a Make simply visit this Thing again and click I Made One to start uploading your photo. It’s even easier to post a Make via the Thingiverse Mobile app (available via Google Play and Apple App Store).

Celebrating Shark Week with 3D Printing

‘Tis the season of the shark, and we want to make sure you have the best shark swag of all your non-aquatic acquaintances. What better way to make sure your friends’ jaws hit the floor than with a life size shark replica?

Great White Shark Image courtesy of: Martin Prochazkacz

Recreating the fine curves and geometries that come with 400 million years of fin-tuned evolution is no easy task. In order to capture these sharks in their closest form, we recommend using our SLS (Selective Laser Sintering) 3D Printing process. This process builds your parts by heating specific parts of a nylon powder bed with a laser to melt and fuse the piece together. This avoids visible layer lines typical with the FDM process. Though this isn’t what Dr. Evil had in mind, this is the closest you can get to having “sharks with friggin laser beams attached to their heads.”

There are many sharks that are small enough to 3D print, fitting within the SLS build area as one solid part. This way you can print one life size anatomically correct shark in one piece, as opposed to printing out multiple sections and gluing them together.

3D Printing Maximum Build Volumes (in inches)

SLS (durable white nylon) 13 x 13 x 22
SLS (glass fill nylon) 26 x 15 x 23
FDM 36 x 24 x 36
PolyJet 19 x 15 x 7
DMLS (aluminum) 6 x 6 x 6
DMLS (stainless steel) 9 x 6 x 6
Metal Binder Jetting (bronze) 29 x 15 x 14.25

The Burmese Bamboo Shark is the largest shark that fits within the maximum build volume of our SLS printers. You’ve probably never heard of it, but this extremely rare shark would be a fine addition to any shark lover’s mantlepiece.

Burmese Bamboo Shark Burmese Bamboo Shark
Image courtesy of: Shark Sider

How about a shark that could swallow a great white whole? This 60 foot monster is called the Megalodon. Don’t worry, this aquatic nightmare went extinct 2.6 million years ago. Megalodon is figuratively and literally “long in the tooth,” wielding chompers that reach up to 7 inches long. Luckily there are CAD files of its teeth available so you can start quoting. This model (quoted below) is a smaller 3.5 inch tooth that can make the perfect paper weight.

If you’re looking for a life size shark replica that can still fit in your pocket, the Dwarf Lanternshark is perfect for you. This is the smallest shark on earth, coming in at a measly 20 centimeters long. That’s right, it’s barely longer than the Megalodon’s tooth!

Dwarf Lanternshark Image courtesy of: Wikipedia

Some of our amazing Xometry customers are already part of the action! These shark-based beer tools were designed by @beersharkproducts and were CNC machined from aluminum 6061, one of our most popular CNC materials. 

Beer Shark Products by our customer Westen!

At Xometry, we make your custom ideas a reality. Whether it’s printing the largest shark tooth ever or printing a shark small enough to fit in your hand, we love building parts for our customers.

For more ideas and tips for utilizing SLS, check out our free SLS design guide!

Australian scientists create 3D-printed brain-like tissue from stem cells

Scientists in Australia have used a 3D printer to create nerve cells found in the brain using a special bio-ink made from stem cells.

Key points 3D brain tissue

Key points:

  • Stem cells from adult cells used to make “bio-ink”
  • Bio-ink printed into 3D scaffold and then stem cells turned into nerve cells found in the brain
  • Process could be used in the future to make replacement brain tissue from patient’s own skin cells

The research takes us a step closer to making replacement brain tissue derived from a patient’s own skin or blood cells to help treat conditions such as brain injury, Parkinson’s disease, epilepsy and schizophrenia.

The bio-ink is made of human induced pluripotent stem cells (iPSC), which have the same power as embryonic stem cells to turn into any cell in the body, and possibly form replacement body tissues and even whole organs.

Jeremy Crook, who led the research, said the ability to customise brain tissue from a person’s own body tissue was better for transplantation.

“That circumvents issues of immune rejection, which is common in organ transplantation,” said Dr Crook, from the University of Wollongong and ARC Centre of Excellence for Electromaterials Science.

Correcting chemical imbalances

Dr Crook said many neuropsychiatric disorders result from an imbalance of key chemicals called neurotransmitters, which are produced by specific nerve cells in the brain.

For example, he said, defective serotonin and GABA-producing nerve cells are implicated in schizophrenia and epilepsy while defective dopamine-producing cells are implicated in Parkinson’s disease.

The team used 3D printing to make neurones involved in producing GABA and serotonin, as well as support cells called neuroglia, they reported in the journal Advanced Healthcare Material.

In the future, they plan to print neurones that produce dopamine.

“That’s absolutely achievable.”

To make the neurones, Dr Crook and colleagues used their bio-ink to print layers of a hatched pattern to create a 5 millimetre-sized cube.

They then “crosslinked” the cube into a firm jelly-like substance.

Growth factors and nutrients were then fed into the holes of this spongey “scaffold”, encouraging the stem cells to grow and turn into neurons and support cells, linking up to form tissue.

Waste was also removed via the holes in the scaffold.

Dr Crook said once scaled up, blood vessels would be needed, but small transplants could be theoretically possible using the tissue developed so far.

Impressive but risky too

Tissue engineer Makoto Nakamura from Toyama University in Japan said the study was “very impressive”.

“This article indicates the good feasibility of 3D bioprinting with human iPS cells to engineer neural tissues,” said Professor Nakamura, who recently wrote an overview on the use of 3D bioprinting in the journal Tissue Engineering.

But he said there were also risks with the technology.

One of the challenges of using iPSCs is that, like embryonic stem cells, they have the potential to develop into teratomas — disturbing looking tumours that contain more than one type of tissue type (think toenails growing in brain tissue, or teeth growing in ovary tissue).

According to Professor Nakamura, it would be important to ensure all the stem cells had turned into nerve cells in the final transplanted material.

“Undesired tissue may grow if even only one immature [stem] cell contaminates [the tissue to be transplanted],” he said.

Dr Crook said the team was currently carrying out animal experiments to test if teratomas developed from the 3D printed nerve cells.

3D brains?

While this is a first step towards 3D printing of whole organs, Dr Crook said a whole functioning brain would be a much more complex task.

“That’s a whole different scale. The tissue we print is uniform, and not made up of different regions like a brain,” said Dr Crook.

Still, it is a goal the researchers are heading towards.

Apart from providing customised transplants, 3D printed tissue could be useful for medical research.

For example, tissue from a patient with epilepsy or schizophrenia could be created, specifically to study their particular version of the condition.

“You can compare how neuronal networks form differently compared to healthy patient,” said Dr Crook.

And the tissue could also be used to screen for effective drugs or electrical stimulation treatments.

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