There are many applications you can use to help you with your endeavors at Tech Shop, here are some of what I use and some info about them
Cad Software
- Autodesk InventorThey offer a 3 class training series which costs $25 dollars that is refunded to you at the end of the series for use toward another class.
You also get the software, fully licensed for 6 months as a TechShop member - DraftSight
 - InkScape
 - Sketchup
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