Test stand for rocket engines with a s-beam load cell configuration. 
If you run a motor with ejection charge take necessary precautions..  

Finishing:
Tolerances is fair but I recommend to sand contact surfaces and wipe with silicon.
Household aluminium foil as heat shield on the engine mount.
Zip ties or print your own fastener that fits your custom engine.
The engine mount stop pin is for shorter engine models.    

My setup:
Raspberry pi zero 2w
Waveshare 4" inch HDMI
Load cell 50kg
[https://www.amazon.se/dp/B077YLHG9D?ref=ppx_yo2ov_dt_b_product_details&th=1](https://www.amazon.se/dp/B077YLHG9D?ref=ppx_yo2ov_dt_b_product_details&th=1)
HX711 load cell amplifier
[https://www.amazon.se/dp/B07GT2HYFJ?psc=1&ref=ppx_yo2ov_dt_b_product_details](https://www.amazon.se/dp/B07GT2HYFJ?psc=1&ref=ppx_yo2ov_dt_b_product_details)
M10 Hex bolt 30mm 2x

My printer settings:
Nossle               0.6
Speed                80MM/S
Layer height       0.24 (0.30)
Support              ZigZag
Infill                    20%
Klipper
Cura

Feel free to contact me if you have any questions, and please upload your makes.

Have a kick ass day!

//Firefly