Just glue it

You're school glue can be your diecast glue.

I found an ordinary glue in my cabinet. I tried what the DCPH member said in his tutorial that we can use an ordinary glue for our customized diecast.

This is what I used to re-attach the base to the body of the car since I removed the rivet. This can't be removed easily but I guess not as strong as those expensive adhesives though, I can say this is also better to use if you want to disassemble again your diecast in the future. Anyway, these toys are just for display.

No need to buy an expensive glue for your precious modified diecast :)