Hot Engine Testing

@FuelsRHeavyRocketLiteTIME they are available in parts

@GalacticWorld Yeah okay but what did you make them out of fairing strut interstage?

@FuelsRHeavyRocketLiteTIME they were invisible

@GalacticWorld what was the shock absorber part or how did you make that?

@SamTheFox yeah.
But the engines didn't break lol.
It was because there was a shock absorber attached near the engines.
They prevented the engines to come in contact with the holder.
This saved the engines

bayourex told me that hot stages are delicate when ignited