i m going to make fuselage of rc plane, which will 115 cm long approx and 8 cm width and 15 cm in height. Can any one tell me, is here depron will be a right choice or corrugated plastic sheets???
(in the term of strength and easy to work)

Corro

hot glue can work with corro??
and, what about the thickness of that corro???

There are many posts on working with Corro. Do a search

5mm corro for fuse and 3mm for wing is my standard. and it works well for me, cellophane tape, hot glue, epoxy, CA all works well on corro and depends on the place you need to use it.

Ashok.P

Hi
5 mm Coro will be too much heavy .instead u can use a 3mm coro it'll belight wweight and u can if reinforce it. The plane will be a feather light than 5 mm Coro .
As u said that the plane is about 115 cm that is about 3.5 feet long then the wingspan will be around 5-6 feet the wing van be carved out of 2mm Coro and u can use 5mm doubled Coro for spars and reinforcing it.
And main thing .

U can use hot glue on it but (it is my experience) it will no longer last  and  it will also can increase the weight of the plane .
Instead u can use the flex quik ,its available in lock hardware shops for 50 rs only.