enlarger

would anyone know how to build an enlarger (and lens requirements)
to take tranparencies of size <= 6" x 6"
lens required to give a min image projected size of 1:1
max image size unimportant
transparency would be illuminated by led
hoping this question makes sense
cheers
staffordbhoy2

The easiest way is to get a used 5 by 7 or 8 by 10 inch enlarger which will give you a 7 x 7 or 10 by 10 inch active area.

The lenses needed to make a 6 by 6 inch correctly lighted area cost $$$$ and you just may have to make them yourself. The enlarging lens is cheap, and you will have to find or make bellows to go between the negative carrier and the lens. Just look at any enlarger and scale it up.