Blast media

Wanting to clean the transmission case - rebuilding my transmission and I’ve seen a well known shop that rebuilds - used a blast media to clean the inside/ outside of case and then painted the outside of it - but cannot find out what media and the grit of what was used - any thoughts ?

 

https://skatblast.com/wp-content/uploads/2023/05/abrasive-comparison-2023.jpg

General guide to get started down a very interesting rabbit hole

 

Thanks for that info - do enlighten please ?

 

My understanding that to clean parts you want chemical cleaning. Blast media use may result in leaks if you hit sealing surfaces.

Something like this:

https://www.youtube.com/watch?v=95zNcncv_Ms

 

I appreciate that. In this video on a rebuild they blast the case of the transmission - that what made me consider doing it
https://youtu.be/ISHkarHC0_w?si=TowxbUj0_joEbPGy