![picture of Greg Paulsen](https://images.prismic.io/xometry-marketing/9759abb2-e19d-42b3-9f04-dc8b672c240b_Greg+Paulsen+Headshot.png?auto=format%2Ccompress%3Fauto%3Dcompress%2Cformat&rect=0%2C0%2C800%2C800&w=300&h=300&fit=max)
Greg Paulsen
They call me the Director of Application Engineering at Xometry. This means I not only get to produce great design-for-manufacturing content but also consult on various custom manufacturing projects using CNC machining, additive manufacturing, sheet metal, urethane casting, and injection molding. If you have a question, I'm your guy.
Metal Parts Manufacturing - How to Make Custom Metal Parts
![5 axis CNC machine at work](https://images.prismic.io/xometry-marketing/c9f18429-ec1f-4a93-b564-6e73a0f607ee_20160707-5axismilling-blog-hero.jpg?auto=compress%2Cformat&rect=339%2C0%2C720%2C720&w=486&h=486&fit=max)
The Advantages of 5-Axis CNC Machining
![A turned part](https://images.prismic.io/xometry-marketing/f826ac1b-2620-4321-841d-2fc466d25a4c_Lathe+Part.png?auto=compress%2Cformat&rect=47%2C0%2C469%2C469&w=486&h=486&fit=max)
Difference Between a Mill and a Lathe
![An injection molded screw for manufacturing](https://images.prismic.io/xometry-marketing/b7266f7e-fe2a-42be-9673-48cfe0540302_20150618-3dpvsinjectionmolding-blog-hero.jpg?auto=compress%2Cformat&rect=679%2C0%2C720%2C720&w=486&h=486&fit=max)
![Instant pricing and dfm on custom tube cutting and bending](https://images.prismic.io/xometry-marketing/Zs4_REaF0TcGJcaE_20240729_Social_Tube-Bending.png?auto=format%2Ccompress&rect=0%2C0%2C4500%2C4500&w=486&h=486&fit=max)
![high precision cnc part](https://images.prismic.io/xometry-marketing/16f02eee-0f7d-4870-a55c-3df14eaebb55_cnc-metal-tapped-pockets-triangles-20190412-Blog-Hero.jpg?auto=compress%2Cformat&rect=339%2C0%2C720%2C720&w=486&h=486&fit=max)
What Every Designer Needs to Know About CNC Part Tolerances
![Metal 3D printing. Image Credit: Nordroden/Shutterstock](https://images.prismic.io/xometry-marketing/5c1053af-f37f-4f59-ac40-9918ea1fef6a_shutterstock_1085138906+%281%29-min.jpg?auto=compress%2Cformat&rect=166%2C0%2C667%2C667&w=486&h=486&fit=max)
![SLS nylon 3D prints with brass threaded inserts](https://images.prismic.io/xometry-marketing/22f55b51-ceb8-453c-b834-ec403cb7fcd4_SLS+nylon+3D+prints+with+brass+threaded+inserts.jpg?auto=compress%2Cformat&rect=181%2C0%2C1102%2C1102&w=486&h=486&fit=max)
Additive Manufacturing Guidelines for Food Products
![Xometry Image](https://images.prismic.io/xometry-marketing/93b84cbd-d6b3-484f-99c4-6f57bebd3827_20160719-reduce3dprintcost-blog-hero.jpg?auto=compress%2Cformat&rect=339%2C0%2C720%2C720&w=486&h=486&fit=max)
5 Easy Ways to Reduce 3D Printing Costs
![A normalized coped cut on round tube in SolidWorks](https://images.prismic.io/xometry-marketing/Zr5NQUaF0TcGI-Jv_AfterCopeFull.png?auto=format%2Ccompress&rect=898%2C202%2C893%2C893&w=486&h=486&fit=max)
Designing Normalized Coped Cuts on Round Tube
![A normalized miter on square tube in SolidWorks.](https://images.prismic.io/xometry-marketing/Zr9XqkaF0TcGJAFX_NormalizedMiteredSquare.png?auto=format%2Ccompress&rect=972%2C290%2C686%2C686&w=486&h=486&fit=max)
Designing Normalized Mitered Cuts on Rectangle Tube
![A normalized miter cut on round tube in SolidWorks](https://images.prismic.io/xometry-marketing/Zr5TLkaF0TcGI-Mc_AfterMiter1Full.png?auto=format%2Ccompress&rect=830%2C150%2C909%2C909&w=486&h=486&fit=max)
Designing Normalized Mitered Cuts on Round Tube
![Part with straight cut slot (left) vs. normalized cut slot (right).](https://images.prismic.io/xometry-marketing/e2ddd4d8-f43e-413a-ae01-0b887324e84c_normalized_cut.png?auto=format%2Ccompress&rect=100%2C0%2C800%2C800&w=486&h=486&fit=max)
Normal to Surface Cuts in Tube Manufacturing
![Multi material polyjet 3D printing services](https://images.prismic.io/xometry-marketing/44fbf8c0-73a0-427b-bbb2-b8d1c97ad3f9_Multi+material+polyjet+sphere.jpg?auto=format%2Ccompress&rect=661%2C0%2C2644%2C2644&w=486&h=486&fit=max)
PolyJet vs. SLA: Differences and Comparison
![Flat sheet metal part](https://images.prismic.io/xometry-marketing/fbcfb66c-21ad-40d2-9bd6-8d61ce0cb3f9_20170118-sheetmetaltolerances-blog-hero.jpg?auto=compress%2Cformat&rect=339%2C0%2C720%2C720&w=486&h=486&fit=max)
Understanding Sheet Metal Tolerances
![SLS parts](https://images.prismic.io/xometry-marketing/de4ef134-2b0b-4028-af0e-ad15016b451f_20150401-whatissls-blog-hero.jpg?auto=compress%2Cformat&rect=339%2C0%2C720%2C720&w=486&h=486&fit=max)
All About Selective Laser Sintering (SLS) 3D Printing
![an illustration of the selective laser sintering 3D printing process](https://images.prismic.io/xometry-marketing/b29a9413-98ba-4f51-ad04-d5d832cbd501_SLS.png?auto=compress%2Cformat&rect=0%2C0%2C237%2C237&w=486&h=486&fit=max)
![CMM Inspection](https://images.prismic.io/xometry-marketing/88ed8fbb-1823-4cd6-8feb-06872fec87af_Xometry-Design-Engineering-Services-CMM.jpg?auto=compress%2Cformat&rect=0%2C0%2C1080%2C1080&w=486&h=486&fit=max)
Inspection Options
![Bent sheet metal with thin walls](https://images.prismic.io/xometry-marketing/210d0470-6028-4746-aba5-8da0fdf23e6f_20160307-cncthinwalls-blog-hero.jpg?auto=compress%2Cformat&rect=679%2C0%2C720%2C720&w=486&h=486&fit=max)
CNC Machining: How to Avoid High Costs on Thin Walls
![A copper part with a Tumbled finish](https://images.prismic.io/xometry-marketing/ae837e56-106f-4a7b-ae75-dab9ddaa0f5b_Copper_SlickStripe_resized.jpg?auto=compress%2Cformat&rect=0%2C0%2C320%2C320&w=486&h=486&fit=max)
What are the Finish Options for Sheet Metal?
![Polypropylene. Image Credit: AdobeStock/Emilia](https://images.prismic.io/xometry-marketing/0eb1c154-6b27-4db7-9e4a-7c498af5e73a_injectionmolding-rawmaterial-multicolor-pellets-002-20180823-adobestockID-191072589.jpeg?auto=compress%2Cformat&rect=833%2C0%2C3264%2C3264&w=486&h=486&fit=max)
4 Emerging Injection Molding Technologies
![Engraving onto a metal surface using a mechanical cutting blade. Image Credit: szelltib/Shutterstock.com](https://images.prismic.io/xometry-marketing/6ba0707b-b624-4b51-80a3-c3ee3c18b612_metal-engraving-using-mechanical-blade.jpg?auto=compress%2Cformat&rect=89%2C0%2C667%2C667&w=486&h=486&fit=max)
How Does Metal Engraving Work?
Ways to Save Money on CNC Prototypes
![Parts with threaded holes](https://images.prismic.io/xometry-marketing/97b61133-3e30-4bb7-b438-ec074d38c667_close-up-chrome-metal-circles-with-holes-WWB2BVQ-min.jpg?auto=compress%2Cformat&rect=1341%2C0%2C4912%2C4912&w=486&h=486&fit=max)
Threaded Holes: Guidelines and Considerations