https://engineeringportfolio-justingraf.com/portfolio daily 1.0 2026-09-18 https://engineeringportfolio-justingraf.com/portfolio/fixerupper-house-projects monthly 0.5 2026-09-18 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/f66777d9-a9f0-4a3a-8b9c-1a6996e30ab7/Screenshot_20241210_155643_Zillow.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Fixer-Upper 100 year old house https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1789705961327-DXYL0JTLF8QUWV9234EY/shared%2Bimage.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 New PEX plumbing to replace galvanized pipes https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/23e6246b-3db9-410a-a0a0-f7b7d8ba9542/shared+image+%288%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Original mixed galvanized, copper, and PEX plumbing https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/94a3b9bc-5d9b-4332-bb28-1e3e2474f3c9/shared+image+%286%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Cutting holes in the ceiling for mini split https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/da640ca2-030a-48a8-9f09-af9edd63e65f/shared+image+%287%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 mounting ceiling cassette https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/21d9358c-f099-4076-aaf3-075561e007d9/shared+image+%285%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Finished indoor unit https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/0477cbb3-eec6-438a-bc59-4a33ecc363f3/shared+image+%284%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Finished outdoor mini split https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/c2e72c3e-5f97-4ed7-a1d5-b54248d0244f/shared+image+%282%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Catio build https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/c6a2e859-7e4d-4a55-a68f-dea9e6074327/shared+image+%281%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Finished Catio to match house https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/c5582147-d2c1-48c3-9515-00357451fcf8/shared+image+%283%29.jpg Portfolio - Fixer-Upper House Projects - Spring 2025 Residents moved in https://engineeringportfolio-justingraf.com/portfolio/project-six-sz8wl-wxb9s monthly 0.5 2024-04-02 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/681ba97c-7c60-4f94-8481-a532ecf1ff7d/20240330_180624%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 Complete battery and electronics mounted in a waterproof Pelican case https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/f9da94ea-8f73-4e85-af94-c5315ed1a6b3/20240402_163626%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 3D printed motor assembly and 3D printed prop https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/61742b7b-61bc-4b47-a167-aef27d6abb9f/20220720_183550%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 Making a custom external heatsink for motor speed controller https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/8a3d7ba6-939e-4163-86b8-92d23c01eb63/20220722_153050%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 Motor speed controller mounted in Pelican case https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712100888246-H2G9Q23NFJHH1FYJ5KZI/20230426_161914%255B1%255D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 First revision prop made by 3D printing extra material, then CNC machining down to final dimensions for higher precision https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/c2f6a770-8da9-460e-88d9-5a885351c0e7/20230511_161911%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 First revision motor housing and prop https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/efa491f3-4e5a-4080-a5a2-37f039731044/20230830_152006%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 Building the battery pack from Samsung 21700 cells https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/a8021248-80d2-45e0-90f7-730b2e238bbf/20240330_180713%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 Battery and electronics inside Pelican case https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/e5d59fed-3111-4ce9-b1d6-b9b1f4eb4df1/20240403_093827%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 Controller housing mounted on paddle https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/8bd82090-6f96-45c6-ac62-ea9aee38a3cd/20240403_093909%5B1%5D.jpg Portfolio - Electric Powered Stand-Up Paddleboard - Spring 2022 controller electronics https://engineeringportfolio-justingraf.com/portfolio/project-five-jkmzy-7fgx5 monthly 0.5 2024-04-03 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/6ad33663-d24e-43f5-ab03-0e09a3c54185/20210618_180757%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 My first CNC machine. Very DIY and many 3D printed components https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/ab71eef8-479f-48bb-bd46-0f55766ad394/20210827_165756%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 Added a Shapeoko 3 CNC machine and built an enclosure https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/2cc13a78-817c-4f48-9eda-88babb7fb9c2/20240402_143745%5B2%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 My current setup with a Shapeoko Pro and water cooled VFD spindle. https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/eb868429-fe96-4b52-97cc-5cbf6855111e/20230517_132232%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 Wood and resin 3D terrain art pieces are the main focus - SF Bay area - image is about 6 inches across https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/d0d1987f-147e-4e14-a5fb-42bf5ac8d884/20230731_143758%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 And Lake Tahoe area - mountains in image are about an inch tall https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712094698863-XNI23I9NRO90DRP9Q7XQ/20240331_124751%255B1%255D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 I also make custom engraved valve tags https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/493cd89d-8f60-4dab-baf5-f84a500c52c7/20230803_004735%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 M28.5 x 0.6 machined threads in a 3D printed lens adapter for a telescope https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/b96697db-ecbd-4d51-b9ce-d4e2569c7ffa/20230706_231713%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 aluminum heatsink for motor speed controller https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/b38892fc-b0d2-47b0-8ea5-4e74e26341d0/20220424_192456%5B1%5D.jpg Portfolio - Starting a CNC Machining Side Business - Summer 2021 Aluminum front bike sprocket adapters https://engineeringportfolio-justingraf.com/portfolio/project-four-yjynj-kw2gl monthly 0.5 2024-04-02 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/4fa72764-0ab5-45a0-926c-31d1cd87923e/20200720_134955.jpg Portfolio - Automatic Lubrication Equipment Test Bench - Winter 2020 Complete test bench with high pressure pump and regulator manifold https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/3a770a03-2c7c-4a95-b316-912abce7fa92/20200720_111530.jpg Portfolio - Automatic Lubrication Equipment Test Bench - Winter 2020 Hand made tubing connections for manifolds https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/67996ffa-239a-42e9-8e1e-af4317f8dd32/20210830_140946.jpg Portfolio - Automatic Lubrication Equipment Test Bench - Winter 2020 Testing flow through lubrication divider valves https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/36eac192-0fcb-458b-b90e-3c66a2de0af8/HP+Panel_2.jpg Portfolio - Automatic Lubrication Equipment Test Bench - Winter 2020 Regulator manifold validated with test bench https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/2c9e9647-1aaa-4d12-885d-12085ee1cc79/LP_Panel_1%5B1%5D.jpg Portfolio - Automatic Lubrication Equipment Test Bench - Winter 2020 Divider valve manifold validated with test bench https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/c7418aa1-c022-4590-9251-5ec5cdb4d729/High+pressure+test+bench_Isometric+view.JPG Portfolio - Automatic Lubrication Equipment Test Bench - Winter 2020 Solidworks model of test bench https://engineeringportfolio-justingraf.com/portfolio/project-three-8zgh7-mhh34 monthly 0.5 2024-04-03 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/f5fd8d6f-b355-40d2-b4ad-639b95c7e78b/Layout+Diangonal+with+edges.JPG Portfolio - Air Pressurization System for Boeing Autoclaves (Senior Design Project) - Spring 2019 The complete system with compressors, air holding tanks, and heat exchangers to provide hot pressurized air to the autoclave https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/02c9958f-9135-46ac-9936-88665ee714d9/Layout+Compressor+Section+with+edges+2.JPG Portfolio - Air Pressurization System for Boeing Autoclaves (Senior Design Project) - Spring 2019 Centrifugal air compressors for the system https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/94e40486-9470-4c83-8778-da6efac90d43/Layout+Heat+Exchanger+Section+with+edges.JPG Portfolio - Air Pressurization System for Boeing Autoclaves (Senior Design Project) - Spring 2019 Heat exchangers to heat pressurized air for autoclaves https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/2f138e15-537f-4338-8475-d77265f5c126/Layout+Top+view+with+edges.JPG Portfolio - Air Pressurization System for Boeing Autoclaves (Senior Design Project) - Spring 2019 General layout and footprint of entire system https://engineeringportfolio-justingraf.com/portfolio/project-two-llrgk-n69kr monthly 0.5 2024-04-03 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/38275f7b-72b9-4265-97d8-08fa639d92ea/AF2FBD5E-C5AB-4DC6-A322-F527943F6059.jpeg Portfolio - Formula SAE Car Body - Spring 2018 The finished carbon fiber body panels on the car https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/4f9fac6e-fbda-43a3-918b-dacc02911917/20180331_142259.jpg Portfolio - Formula SAE Car Body - Spring 2018 Making a mold out of foam for the main body panel carbon lay-up https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712100139215-R89IW9X8HK2NS30IC8XR/20180420_185756.jpg Portfolio - Formula SAE Car Body - Spring 2018 Finished foam and fiberglass mold for the nose cone https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/da4c3b9e-7a40-4ce5-97b1-48bfe71c456b/20180426_141331.jpg Portfolio - Formula SAE Car Body - Spring 2018 Vacuum bagging and curing carbon fiber resin on the nose cone https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1d57aa61-fd45-489d-8d3c-51aba7a1d155/20180426_092736.jpg Portfolio - Formula SAE Car Body - Spring 2018 Carbon fiber body piece after removal from the mold https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/b225446c-92d6-4054-8e24-427dfc668d09/20180428_192902.jpg Portfolio - Formula SAE Car Body - Spring 2018 Trimming and testing fitment of body panels https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/0c24e752-61b1-401f-b1ff-4de213fb6cee/20180503_182439.jpg Portfolio - Formula SAE Car Body - Spring 2018 Painting and finishing body https://engineeringportfolio-justingraf.com/portfolio/project-one-ephnc-terlm monthly 0.5 2024-04-02 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/b2b26421-ea8c-4dc7-b4fe-f95806bca72c/ECF47A7A-85DA-4173-97C7-FFBB2E73FB1F+%282%29.jpeg Portfolio - Electric Bike - Fall 2017 The finished bike on top of Steptoe butte, WA https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/d91b26f3-cc2b-4b66-8646-55d4bb1a0e7a/Bike+7.jpg Portfolio - Electric Bike - Fall 2017 Building the battery pack and packing as many batteries in the limited space as possible https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/e2ef2173-96a6-4410-841d-fa76f4f63b8a/Bike+5.jpg Portfolio - Electric Bike - Fall 2017 Fabricating the motor mount from 16 gauge steel https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/f57eab12-9f07-4439-bff7-2bb276fb7f65/Bike+2.jpg Portfolio - Electric Bike - Fall 2017 Fitting all the individual pieces https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/a06acd4f-fb2e-4051-a89e-5a9bef28a96f/Bike+4.jpg Portfolio - Electric Bike - Fall 2017 Testing the custom drivetrain https://engineeringportfolio-justingraf.com/portfolio/tiny-house-fall-2020 monthly 0.5 2024-04-03 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/e1c1b404-5d75-4be4-b21e-0ef98f260bf4/20200612_172459.jpg Portfolio - Tiny House - Fall 2020 Using a trailer as a "Foundation" https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/e2808ba4-fb95-453f-8929-c1b2bbe4c80e/20200613_114438.jpg Portfolio - Tiny House - Fall 2020 Laying down foam insulation https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/8755a733-84d5-4902-b2bf-7e17d2b12c2b/20200613_140541.jpg Portfolio - Tiny House - Fall 2020 Installing subfloor https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/f6c5f56c-0d3d-4b89-a950-a265eb4dc1fb/20200725_192115.jpg Portfolio - Tiny House - Fall 2020 Framing walls https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/50944fb6-28ca-433c-a0ea-9d85fff4b36c/20200821_164216.jpg Portfolio - Tiny House - Fall 2020 Adding exterior sheathing https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/05e84eb8-0f8f-41f3-be66-ab5b60c7500b/20200908_095553.jpg Portfolio - Tiny House - Fall 2020 Wiring entire house myself https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/48e528a0-0664-4c0f-9a03-216811ec9b33/20200908_095642.jpg Portfolio - Tiny House - Fall 2020 Running wires https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/abdd4cef-e9d4-4c75-8c92-42de4bd10635/20201020_120237.jpg Portfolio - Tiny House - Fall 2020 Installing interior finish https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/9d414557-79ce-4e2b-b458-bb3e5f68b0b7/20201020_120326.jpg Portfolio - Tiny House - Fall 2020 Building the bathroom https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/c38e44a5-7c88-4568-9cf8-e54c730d3c2e/20201029_093342.jpg Portfolio - Tiny House - Fall 2020 Finishing the bathroom https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/0ab972fb-099e-4880-a24e-2aa407a45119/20201207_111505.jpg Portfolio - Tiny House - Fall 2020 Finished bathroom https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/a4362a44-6ae3-498b-b6ce-e2d6c35acfd1/20201207_122319.jpg Portfolio - Tiny House - Fall 2020 Finished kitchen https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/2577f839-c699-4c74-9f30-51e285206f6c/20201207_111931.jpg Portfolio - Tiny House - Fall 2020 Inside view from kitchen https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/bae6fab3-f513-4ee6-9f90-e90aa8e78b9e/20201207_111333.jpg Portfolio - Tiny House - Fall 2020 Outside back https://engineeringportfolio-justingraf.com/portfolio/starting-a-youtube-channel-to-showcase-engineering-projects monthly 0.5 2024-04-03 https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1e471b89-a908-442d-8db7-a509698a1f52/VideoCapture_20240116-200517%5B1%5D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Racing my R/C monster truck around the Eastern Sierra desert https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161706705-TD5VYKZP2JTARPJ9EJEY/Screenshot%2B2024-04-03%2B083614.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Full seaplane model designed from scratch https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161697128-UL7O6REXPERPNS2WDE5E/Screenshot%2B2024-04-03%2B083805.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Seaplane side view https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161684907-66X17WEAACN77H04RJE4/Screenshot%2B2024-04-03%2B091222.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Seaplane front view https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161647287-YCWSP9HTCKH78Y6PWIQ5/20240403_082340%255B1%255D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Seaplane foam fuselage pieces https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/15df0d99-8efb-4a95-8059-303ebf7a6e93/20240403_082610%5B1%5D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Wing section with CNC cut cross-sections and carbon fiber wing spar https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/a69a3639-e192-40a4-8990-26e7a797c957/20240403_082508%5B1%5D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Another fun build to showcase - my foamboard R/C airplane https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/b24c2fbe-c587-45f1-83d0-1bdaf3efd99e/20240403_091823%5B1%5D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 3D printed R/C airboat to test hydrofoil designs https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161760622-LFUWWP12A8U1HYAZV7IS/20240403_092141%255B1%255D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Catamaran hull https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161622960-QI24B41G9B0XM0051C7B/20240403_092220%255B1%255D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Machined hydrofoil tab https://images.squarespace-cdn.com/content/v1/660c61a1e998563a40cd206a/1712161609037-9P9MG155KWKH54B8YL0S/20240403_092156%255B1%255D.jpg Portfolio - Starting a Youtube Channel To Showcase Engineering Projects - Fall 2023 Hydrofoil cross-section