two models uploaded here as DAE format

1/4 round base 1 door
https://www.dropbox.com/s/g85z4zsip8hka4r/1%20door%20round%20base.dae

1/4 round base 2 door
https://www.dropbox.com/s/kltcw79i817ygtz/2%20door%20round%20base.dae