Hello aspirant,
Maharastra institute of technologyMIT ,pune  is the best institute for diploma in tool engineering
GOOD LUCK,
Thank you

Dear Vipul

Vipul in Pune there are few good and reputable institution through which taking the diploma in Tool and Engineering will be worthwhile. Like they are :

• PSG institute of Advanced Studies.
• The Institution of Tool Engineering (ITE)

http://www.psgias.ac.in/?page_id=1657

http://www.itecadcam.com/

All the best