Heavy Duty Customizable Lens Board for 4x5 Graflex Pacemaker Speed Graphic / Crown Graphic Cameras

thingiverse

Comes in two versions. The first version is a basic flat lens board with all parts of the board beefed up for added strength. You can add a custom sized lens hole and if necessary a thinner area for a retaining ring or a thicker area for press fitting projector lenses, etc. by using "add part" and "add negative volume" in prusaslicer. The second version comes in two parts, an outer frame and an inner box that can be combined in a couple of ways to create a recessed or top hat lens board. First way: trim the box to your desired height with "cut [c]" in prusaslicer, add a lens hole to the closed end of the box, print the box and frame separately, insert the open end of the box into the frame and glue them together. Or, you could print the box a bit taller than you need, adjust it's position in the frame while mounted to the camera, glue it and trim the excess with a knife. You'll probably need to scale down the box slightly to account for your printer's tolerances or do a bit of sanding to get a good fit. Second way: print the frame and box together as a single piece, with some added support for the box, no sanding or scaling required. You'll need to rotate the box 180 degrees (x or y) and for a top hat board you'll need to do the same to the frame. Adjust the box's z position to get the height you want then add your lens hole. I've included boxes with three different wall thicknesses, 1.6mm, 2.0mm and 2.4mm. 1.6mm seems plenty strong enough for a decent sized lens, but it's good to have options. These two lens boards should work with pretty much any lens you'd want to use on a graphic, depending on how creative you're willing to get with "add part" and "add negative volume", and should print fine flipped front side up with bridging across the groove if you need to add something to the front of the board or are printing the second version as a single piece top hat board. How I print mine: elegoo neptune 2s printer duramic 3d pla plus filament 0.4mm nozzle 0,2mm layer height 4 perimeters 8 top/bottom layers 20% fill density grid fill pattern aligned seam position No brim or supports, except when printing the second version as one piece with supports for the closed end of the box.