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    <loc>https://www.erictrulson.com/about</loc>
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    <lastmod>2026-01-21</lastmod>
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      <image:title>About - Hi there, I’m Eric. I build things and I talk to people.</image:title>
      <image:caption>Professionally, I’m a mechanical engineer, with a particular love for thoughtful product development and high-temperature equipment (design problems get a lot more interesting above 1000 C). Currently available for work: Hire me! My last major professional engagement was a period of full-time work as a senior mechanical design engineer &amp; program manager at Boston Metal, designing and building furnaces to develop a molten oxide electrolysis process and create zero-carbon green steel from electricity. I also founded and run the Salamander Tool Company, which builds high temperature tools and equipment for the studio glass community and provides mechanical design and high-temperature specialist consulting services for industrial clients. On my own time, I’m both a metalworker and glassblower. I have spent over a decade welding, machining, and fabricating metal, and doing both torch &amp; furnace work with soda-lime glass. I particularly love exploring and utilizing the chemistry of glass, formulating and melting different glass bodies. You can see some of that work here. I also enjoy software and programming, especially writing code to interact with the physical world. I primarily code in python, often tying together some assortment of sensors, motors, &amp; relays. In the past I’ve made things like a motion-controlled lamp, homebrew PID temperature controller, desktop CNC router, clay-extruding 3D printer, and an IoT device for remotely monitoring glassblowing furnaces. I love finding opportunities to use software as a lever against tough physical problems.</image:caption>
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    <loc>https://www.erictrulson.com/3d-printers-cnc-routers</loc>
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    <lastmod>2020-05-18</lastmod>
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      <image:title>3D Printers &amp; CNC Routers - Cerambot - Clay FDM printer (build currently in progress)</image:title>
      <image:caption>I’m building this printer to be able to make clay parts, mostly to then use them as components in larger blown glass pieces. The original printer is a Flashforge Creator Pro, modified to use a Cerambot pro extruder head, with both of them controlled by a Duet 2 Wifi board. I took the Flashforge and stripped out its extruder head &amp; original motherboard, installed the Duet 2 and wired up all the movement motors to it, and am currently in the process of getting the clay pump extruder motor running correctly (having issues getting things to pass signals correctly through the external stepper driver I’m using, since the pump motor needs 2A and can’t be run directly from the Duet).</image:caption>
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      <image:title>3D Printers &amp; CNC Routers - Shapeoko 2 - Desktop CNC Router</image:title>
      <image:caption>This was my first CNC-controlled piece of machinery, a slightly modified Shapeoko 2 that I built a few years ago down in NC. To be honest, I think I spent more time building and tinkering with this machine than I did actually cutting material and making parts on it. Still, it was a great little beastie to mess around with and learn on, and it got me started with CNC work and robotics/machine control in general.</image:caption>
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    <loc>https://www.erictrulson.com/test-sheet</loc>
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    <lastmod>2020-05-14</lastmod>
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  <url>
    <loc>https://www.erictrulson.com/hot-shop-tracker-furnace-controller-iot-device</loc>
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    <lastmod>2020-05-21</lastmod>
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      <image:title>Hot Shop Tracker - Furnace Controller IoT Device</image:title>
    </image:image>
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      <image:title>Hot Shop Tracker - Furnace Controller IoT Device</image:title>
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      <image:title>Hot Shop Tracker - Furnace Controller IoT Device</image:title>
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      <image:title>Hot Shop Tracker - Furnace Controller IoT Device</image:title>
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      <image:title>Hot Shop Tracker - Furnace Controller IoT Device</image:title>
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      <image:title>Hot Shop Tracker - Furnace Controller IoT Device</image:title>
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    <loc>https://www.erictrulson.com/glassblowing-equipment</loc>
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    <lastmod>2021-01-29</lastmod>
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      <image:title>Glassblowing Equipment</image:title>
      <image:caption>Blowpipe &amp; punty ends, freshly machined and ready to be welded to the main bodies</image:caption>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
      <image:caption>It doesn't look like much, but drilling such narrow holes all the way through the parts in this particular grade of stainless steel was quite a challenge!</image:caption>
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      <image:title>Glassblowing Equipment</image:title>
      <image:caption>The welding setup was...definitely a bit rough around the edges. I just used two vices aligned on the welding table (the professionals do this bit in a lathe, so they can keep things aligned while they weld).</image:caption>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
      <image:caption>Little detail shot of a blowpipe and two punties just after being welded</image:caption>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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      <image:title>Glassblowing Equipment</image:title>
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  <url>
    <loc>https://www.erictrulson.com/work</loc>
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    <lastmod>2026-01-21</lastmod>
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  <url>
    <loc>https://www.erictrulson.com/work/engineering</loc>
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    <priority>0.5</priority>
    <lastmod>2026-01-21</lastmod>
    <image:image>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/5e4b3ef528c78d6f7e786adf/1606969204116-LVK4V08ZL8JY3MTCC298/CoatedHousings.png</image:loc>
      <image:title>Work - Engineering (professional work) - SAAM Inc. (2020)</image:title>
      <image:caption>Short-term contract as senior mechanical engineer at a startup, parachuted in to take point on their product development and help them get from rough design to having the first six functional prototypes built &amp; tested in four months. Product was a consumer electronics device - a smoke, fire, gas, &amp; air quality sensor utilizing NDIR spectroscopy and a novel opto-mechanical design to sense ambient air makeup with much finer limits of detection than existing consumer devices. “Wear all the hats” role - mechanical design, hands on machining &amp; fabricating, PCB layout &amp; assembly, writing software, systems integration, testing &amp; validation, DFA/DFM etc.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5e4b3ef528c78d6f7e786adf/1611934751407-JFRLH54IA6SM117PIIQI/Fuse_1_Ecosystem.png</image:loc>
      <image:title>Work - Engineering (professional work) - Formlabs (2018 - 2020)</image:title>
      <image:caption>Worked on the Fuse 1 SLS printer as a mechanical engineer. Primary responsibility was supporting product development &amp; NPI, taking the printer from a mature prototype to a finished &amp; shipping product. Lots of troubleshooting complex electromechanical systems, fixture &amp; test jig design, updating CAD assemblies &amp; drawing packages, modifying and redesigning parts, and focused testing &amp; troubleshooting to address high technical-risk areas of the overall mechanical design. Also led the SLS build team, in addition to my individual responsibilities above. The team consisted of ~5 technicians, and was responsible for building, operating, upgrading &amp; troubleshooting all prototype &amp; development printers. Primary responsibilities were coordinating individual team member's efforts on a day-to-day basis, implementing scalable &amp; effective organizational strategies within the team, and cultivating the continual growth and skill development of team members.</image:caption>
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      <image:title>Work - Engineering (professional work) - Trulson Design (2016 - 2019)</image:title>
      <image:caption>Founded a design &amp; fabrication business to handle freelance machining work and other contract/project-based mechanical engineering jobs that had begun to come up more frequently. Provided mechanical engineering, design, and prototyping services, supported by in-house CNC machining and a wide range of fabrication capabilities. Specialized in designing and building prototypes and providing support through the entire product development cycle, from initial proof-of-concept through to high-volume manufacturing. Particularly useful in support of hardware startups and other small, focused, product teams.</image:caption>
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    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5e4b3ef528c78d6f7e786adf/1583815663342-2F8QHTN86VVK6YK5WJJD/Orbit-Reader-20-Angled.jpg</image:loc>
      <image:title>Work - Engineering (professional work) - Orbit Research (2015 - 2017)</image:title>
      <image:caption>Worked as a mechanical engineer at a product development company making assistive technology for the blind. Primary products worked on were a refreshable braille reader ("Orbit Reader 20") and a full-page tactile graphics display ("Graphiti") Fast-paced environment, working with a globally distributed team. Strong focus on leveraging intelligent design of mechanical components to deliver high-value products at a lower cost to the end user. Involved routine design of plastic parts for injection molding, and metal and plastic parts for in-house CNC machining. Primary responsibilities were proof-of-concept design and verification, creating multiple prototypes throughout an iterative design cycle, continual testing during prototype development, sourcing parts and interacting with vendors, and refining designs for cost-effectiveness and manufacturability. Proposed and led the development of in-house CNC machining capability, to support a growing need for quick &amp; effective prototyping. Took on the role of primary CAD/CAM designer &amp; CNC machinist. Most machining done on a Tormach PCNC770 mill, with occasional manual lathe work. Parts were largely one-off fixtures, test jigs, and multiple prototype parts during design iterations, with some small production runs (5-50 parts).</image:caption>
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      <image:title>Work - Engineering (professional work) - Wet Dog Glass (2014 – 2015)</image:title>
      <image:caption>Worked as a mechanical engineer supporting the design, manufacture, and operation of studio glassblowing furnaces and equipment. Highly custom manufacturing environment. Examples of work done include developing a calculator to find the heat loss and inter-wall temperatures in a variety of equipment, calculating ventilation requirements for equipment exhaust, sizing gas springs for assisted-open lids, and creating a utilities calculator to estimate electricity and fuel usage and costs for a given hot shop. Worked on the shop floor building glassblowing furnaces and equipment. Responsibilities primarily involved metalwork (cutting, machining, welding, and surface finishing, mostly of steel and aluminum), refractory work (bricklaying, casting refractory components, installing high-temperature fiber and board insulation), electrical &amp; control panel wiring, and a variety of general shop and fabrication work.</image:caption>
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  <url>
    <loc>https://www.erictrulson.com/work/glass</loc>
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    <lastmod>2020-03-08</lastmod>
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      <image:title>Work - Glass</image:title>
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    <image:image>
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      <image:title>Work - Glass</image:title>
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      <image:title>Work - Glass</image:title>
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    <image:image>
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  </url>
  <url>
    <loc>https://www.erictrulson.com/work/tech</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2020-05-21</lastmod>
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      <image:title>Work - Tech (personal projects) - 3D Printers &amp; CNC Routers</image:title>
      <image:caption>Because if you want a thing made right, you should have a robot to do it for you.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/5e4b3ef528c78d6f7e786adf/1582186196301-GZDOCK9YKQZX6N1ONRSO/NHFurnace.jpg</image:loc>
      <image:title>Work - Tech (personal projects) - Glassblowing Equipment</image:title>
      <image:caption>All kinds of glassblowing equipment that I have built - furnaces, ovens, hand tools, molds, blowpipes, etc.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Work - Tech (personal projects) - Hot Shop Tracker - IoT Data Logger for Furnaces</image:title>
      <image:caption>A personal project of mine - making an IoT-enabling device for furnaces and other high-temperature equipment to connect them to the internet and enable data logging &amp; remote monitoring.</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://www.erictrulson.com/work/metalfab</loc>
    <changefreq>monthly</changefreq>
    <priority>0.5</priority>
    <lastmod>2020-03-10</lastmod>
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      <image:title>Work - Metal &amp; Fabrication</image:title>
      <image:caption>Fibonacci spiral - sandcast iron &amp; stainless steell</image:caption>
    </image:image>
    <image:image>
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</urlset>

