This is a simple and cheap tensile strength tester for measuring relative tensile strength from filament samples. It's used to test the layer adhesion strength across various filaments or settings. Does increasing the temperature on your favorite filament create stronger parts? Does high speed printing create weaker parts? This mini tester is designed to answer these questions.

Design Files (printables) - https://www.printables.com/model/889922/

500mm 3030 Aluminum Extrusion - https://amzn.to/4dWCEW7
Linear Actuator (50mm stroke, 200+ pound rating) - https://amzn.to/4bR479M
Momentary Polarity Reverse Switch - https://amzn.to/3UXFAZU
Luggage/Hanging Scale - https://amzn.to/4bULD8J
5x20mm Steel Dowel Pin - https://amzn.to/3ysoEDg
DC Barrel Jack (optional) - https://amzn.to/3Vexa1V
12VDC ~50W Power Supply (or bench supply or existing wall-wart) - https://amzn.to/4aAffa4
Sliding T Nut (3030 series, M5, 8mm wide) - https://amzn.to/4ay3UY8
Various Fender Washers (optional) - https://amzn.to/3QYXxWX

My Favorite Tools - https://www.amazon.com/hz/wishlist/ls...

00:00 Intro
00:57 What are tensile testers?
02:36 The Design Challenge!
03:50 Structure
04:28 Measuring
05:19 Movement
07:15 Printing the Parts
09:27 All the Parts
10:03 Linear Actuator
10:52 Adding the Carriers
11:39 Scale Support
11:56 Luggage Scale Modifications
12:41 Scale Assembly
13:56 Assembly Notes
15:07 Adding the Switch
16:53 Adjustments
17:52 TIGHT TIGHT TIGHT
18:48 Breaking Stuff
20:06 Next Steps