Right can't afford new/nos DC tech III's with the price's they are at the mo - so i'm having to restore my old sets 
find a old tech 3 

de-anno it with a bit of oven pride 

smooth out the rough edges and bits with a polishing mop/bench grinder 
polish off with peek for a sweet smooth finish 

the blue peter shot - before - mid - after all in one 

now start on the rest 


i also had a go at a donut clamp 
before 

after 

altogether 

didn't cost much to do a bit of hard work -i'm chuffed the end results  

cheers B  
