Parametric E-EL 5x7 for Darkroom/Photographic Printing
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This is a parametric speed easel for home darkroom use. It's dimensions and masking area are adjustable in parameters.
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Model information
- Source
- Printables
- Category
- Photo & Video
- License
- Creative Commons — Attribution — Share Alike
I'm hoping to get into printing my B&W photographs at home, and while I wait for an enlarger and such to come, figured I'd 3D print what I could. I could not find an easel for 5x7. This is in some ways inspired by BHuij's “4x6 Speed-EZ-EL” model (https://www.printables.com/model/886802-4x6-speed-ez-el), though I was not smart enough to figure out how to modify that one without breaking it.
I have never made a parametric model before! Hopefully this is workable for folks. This design is also a two-piece drop-on/pull-off mask, which in my (totally untested) mind would be easier than sliding paper in and out.
I really wanted to think about adjusting this for 8x10 eventually. I haven't actually tried that yet. But, this does have a parameter for uniform (even 1/4th" mask all around, though mask is also a parameter you can set, and I put a table of some common ones I found in the comments), and golden-ratio for the mask.
See the photographs, including the second where I've traced a 5x7 piece of paper with the two masks.
I used my slicer to add labels to the bottom and top pieces of the frames. You can do this, or you can add just a dot to signify top.
Adding several STLs of the base, two versions of the top frame (universal and golden ratio), and then the Fusion360 file for your use/adaptation.