Week 2: Printing Plans and Class in Review

So far in Digital Making Seminar, we have spent most of our time learning about 3D printing (or, as we learned from Senvol in week 1, additive manufacturing). Though I have a bit of experience in this area from working on 3D modeling projects in my GE 101: Engineering Graphics and Design course and from independent work in various maker lab workshops, our first two class sessions have taught me a lot about the reasons why we would want to use 3D printing (aside from the obvious “It’s super cool!” answer) and helped me connect with tons of online resources for finding ideas of things to print. Looking more deeply into the different online resources we explored in class has made me even more excited about what things I’m going to have a chance to make this semester and has helped me come up with more ideas for what I might be able to model. Some of my favorites, along with the modifications I would make to them (because customization is what 3D printings all about) include the following:


IPhone Stand + Speaker (http://www.thingiverse.com/thing:175454)

This stand and speaker set would be great to have around to use as a stylish and power free way to amplify music on my IPhone. Instead of using the original horn (which in my opinion is a bit plain) I’d love to use something more like this (http://www.thingiverse.com/thing:544525) that I could fit into the stand.


IPad Stand (http://www.viralnova.com/crazy-3d-printing/)

Adding to my 3D printed stand collection, I’d love to have this little guy printed for my IPad to use when doing things like watching movies. Though this version looks super cool, I think I might turn the little half circle stand piece the man is holding into a longer bar to make the piece a bit more supportive.


Cellular Lamp (http://www.thingiverse.com/thing:19104)

I originally saw this lamp in the BIF Maker Lab and then ran across it again while browsing Thingiverse. I like how they use it more like a statue in the Lab, but would probably use it for its lampshade purpose in my own room. I’d customize it by printing it a lot bigger than the model they have online so I could fit a light bulb inside it and have it reflect cool shadows all around my room.


Stria Necklace (http://www.jennywulace.com/shop/stria-necklace)

This bold 3D printed necklace would be a great piece to wear out, and I’m sure would be a great conversation starter at tech related events. I wouldn’t change much about the actual design of this one, but I think it would be really cool to use the silver leafing process described in this instructable http://www.instructables.com/id/Silver-Leaf-a-3D-Print/ to make it really stand out. I might also consider designing a pair of 3D printed earrings to go with it as well.

3D Printing and Supply Chains

Having taken up Supply Chain Management and Information Technology as my courses of study, I never expected to want to learn about 3D printing – I had only come to learn that objects could be ‘printed’ about a year ago, when I had walked in to the MakerLab at the Business Instructional Facility at the University of Illinois. Imagine my delight when I came to learn of a course that facilitated education about 3D printing through making, learning and sharing – the . Now make note that I used the word ‘facilitated’, because the DMS experience isn’t your regular Illinois classroom experience, where you wake up at 7am and grudgingly head to the Foellinger Auditorium, learn through the professor’s instruction, textbook readings, homework and exams (ugh!). The DMS is an unstructured course with students from all over campus, ranging from Finance and Accountancy majors to Aeronautical engineers and Lawyers! No exams, fun homework assignments, and an instructor who learns with you. What’s more, there’s barely any theory, you learn through what you ‘make’ and through what the others around you make and learn. Grading itself is based on the three philosophies of the class – making, learning and sharing, each worth a third of your grade. Each session usually includes a guest speaker who is an expert in Additive Manufacturing (the correct term for 3D Printing, something you’ll learn if you take the course.

With my major, I was naturally interested in how additive manufacturing would impact Supply Chains. I was sure that they would indeed have a big impact, but wasn’t sure how. Enter our guest speakers for the first session of the DMS – the founders of Senvol. Senvol is an additive manufacturing solutions provider to many Fortune 500 companies. It was founded by Zach Simkin and Annie Wang, both of whom are Wharton MBA graduates. Their first teaching – just because additive manufacturing can be used in a product’s supply chain does not mean it has to be used. Through Skype, they explained the seven scenarios that they had come up with to identify areas of a supply chain where there is potential for cost and time savings through the use of additive manufacturing. The scenarios are explained to firms as follows:

  • Expensive to Manufacture: Do you have parts that are high cost because they have complex geometries, high fixed costs (e.g. tooling), or are produced in low volumes? AM may be more cost-efficient.
  • Long Lead-Times: Does it take too long to obtain certain parts? Are your downtime costs extremely high? Through additive manufacturing, you can often get parts more quickly.
  • High Inventory Costs: Do you overstock or understock? Do you struggle with long-tail or obsolete parts? AM can allow for on-demand production, thus reducing the need for inventory.
  • Sole-Sourced from Suppliers: Are any of your critical parts sole-sourced? This poses a supply chain risk. By qualifying a part for AM, you will no longer be completely reliant on your current supplier.
  • Remote Locations: Do you operate in remote locations where it is difficult, time consuming, or expensive to ship parts to? AM may allow you to manufacture certain parts on-site.
  • High Import / Export Costs: Do you pay substantial import/export costs on parts simply because of the location of your business unit and/or your supplier? On-site production through AM can eliminate these costs.
  • Improved Functionality: AM can enable a part to be redesigned such that its performance is improved beyond what was previously possible, resulting in increased profit margin or market share.

Mr. Simkin and Ms. Wang also described their newly created AM database which has information regarding the current range of materials that are capable of being used in AM and the machines that are capable of using them

Mr. Simkin also briefly stated that additive manufacturing could be used as a means of reactive capacity. Reactive capacity is a firm’s production capacity after the initial sellout of products produced through their speculative capacity. Speculative capacity is often dictated by demand forecasts, which are not the most accurate means of creating orders that completely satisfy the firm’s demand for the current period. This can be better explained through an example. Let us assume that BRZ is a company that manufactures New England Patriots and Seattle Seahawks licensed football helmets through their plant in China. Given the Patriots’ emphatic Super Bowl win, Patriot’s helmets are highly likely to get sold out, BRZ could miss out on huge sales for no fault of their own, and blaming Pete Carroll isn’t going to help them. But additive manufacturing can. Manufacturing another batch of helmets through China could take over a month, by which time the demand for Patriots’ helmets will have almost completely died down. AM, on the other hand, will help have those helmets shelf-ready in a week or even earlier, depending on the resources available to BRZ. The helmets may be more expensive to manufacture through AM, which could cause decreased profit margins, but hey, some profits are better than no profits at all, and then there’s the fact that BRZ will not upset the retailers that order from them, as no sales means that retailers are not able to capitalize on that trophy-winning interception by Malcolm Butler.

To sum it all up, additive manufacturing may not have a dramatic impact on supply chains in the near future due to it’s current limitations, but the future looks promising. With more and more materials coming under the AM banner, expect to see big changes in the supply chain’s of all physical products.