LED enlarger head for 4x5" cameras or Magnifax 4 conversion

thingiverse

An enlarger head for 4x5" negatives. Could be used with 4x5" cameras with graflock back (LH4x5_GraflockBase.stl), or as conversion for Magnifax 4 enlarger (LH4x5_Magnifax4Base.stl - or any other enlarger if you glue it in some way ;-) ). As light source can be used power LEDs: 4x green and 4x royal blue Cree XP-E (you will have multigrade head). Warning: use low current (<100mA) because it has no radiator and will melt! Or design own lid (aluminum). You can also try to use it with led strips. Or even bulb - but I had not tested if light will be even on whole negative. Split into parts for easy print, so srew or glue them together. I used wood screws (1,5mm core, 2.3mm thickness,11mm length) Diffuser has to be done from cardboard or plywood depending on light source. For my power LEDs I created 20cm box with walls covered with aluminum foil, double diffuser at botom (tracing paper glued to both sides of LH4x5_DiffFrame.stl), second diffuser layer 8cm from bottom (tracing paper on wire frame). It still work in progress - I made it based on my old cardboard head which served me a few years ( http://www.pbase.com/hfoto/image/136567805/medium.jpg ) but maybe some improvement would be needed.