The Doors (not the group!)--some questions...

Folks,
I am continuing to read and learn. So far I have discovered that I have the necessary inexperience, primitive tool cache and naivete to undertake a teardrop. In short, certifiable/commitable. That said, I would appreciate advice about the following:
On the matter of doors: Given the above, advice about 1) making your own; or 2) buying from RV parts source.
In the case of the second alternative, do the doors come with a 'sandwich' type frame or or they simply single layer frame mounted on the outside of the wall? If they are sandwich type construction I assume you better know the width of your walls before you start?
Still pondering trailer alternatives,
Jim
I am continuing to read and learn. So far I have discovered that I have the necessary inexperience, primitive tool cache and naivete to undertake a teardrop. In short, certifiable/commitable. That said, I would appreciate advice about the following:
On the matter of doors: Given the above, advice about 1) making your own; or 2) buying from RV parts source.
In the case of the second alternative, do the doors come with a 'sandwich' type frame or or they simply single layer frame mounted on the outside of the wall? If they are sandwich type construction I assume you better know the width of your walls before you start?
Still pondering trailer alternatives,
Jim