After seeing the anticipation in another "door hinge" thread, I thought I'd offer up my design ideas for door hinges not made of wire stuck into a tube. This covers a more detailed description of the hinge design I have already posted in "1/32 scale workbench" but I feel will "scale up" well for 1/24 & 1/25 and possibly 1/12 & 1/16.
This tutorial covers door hinges in which the front edge of the door swings inward when the door is opened, thus duplicating the action of the 1:1 car being depicted in 1/32 scale. There are other hinge designs which the entire door swings outward, that type requires the hinge point to be moved forward of the leading edge of the door (and a slightly different hinge design than shown here). I suggest if you want to replicate a real car, research or take photos to get the proper type of hinge to build but most will have same or similar elements just different mounting points and hinge arcs.
Here are the basic supplies that I used for the hinges herein illustrated, I leave to you regarding your favorite cutting, drilling and shaping tools:

note that the brass u-channels pictured are different size and one will fit into the other ( this is for those that wish to make all of their hinges totally out of brass rather than the method I chose for this project )
Evergreen has lots of great shapes and sizes and should be explored by any who need more than basic kit supplied parts.
Here are the design elements; the mounting points (square plastic rod), brass u-channel (cut, shaped and drilled) and the hinge pin(I am using one long pin during the build to maintain hinge alignment, this will be shortened to one pin per hinge during final assembly).

another shot of the hinges showing the orientation of the brass u-channel

A close-up of one hinge piece sitting on top of a mostly finished door.

This is a shot of the leading (forward) edge of a door, note the openings where the u-channel will slip into the door.

An interior shot of the door showing where the u-channel will fit and calling out where the I-beam and square Evergreen shapes were used.

Note that the trailing edge of the door skin has been thinned out to replicate actual dimensionality of 1:1 door.

Here is a shot of the other side door showing how the brass u-channel slips into the I-beam and square Evergreen strips.

A different view of the same door to get better perspective on the Evergreen parts.

Thanks for looking, I will be happy to answer any questions. There are many ways this can be used, u-channel and brass tubes can be used for exposed hinges on vintage rods...
I don't have my "modeling area" set up right now due to moving into a house that needed/needs much work (and building computers is my other hobby) but I am creeping up on getting
some of my model projects off the back burner and "Under Glass"... and the local shows/contests in Arizona will be seeing more of me, maybe the Moonlight Modellers will let me back
in the club (I still have my badge...)
Edited by blunc, 03 August 2012 - 03:17 PM.