Beseler 23C Negative Carrier – 6 x 7

⚠ Please Read the Instructions First

These carriers work like the original Beseler carriers, but they are plastic, not metal, and plastic has to be handled differently. The included PDF walks through printing and assembly step by step. Following it is the surest way to a carrier that works the way it should.

Printable replacement negative carrier for Beseler 23C-series enlargers, for 6x7 negatives.

Hinged, One-Piece Carrier

Works like the original Beseler carriers. The top plate is joined to the bottom by a print-in-place hinge, so it opens, loads and closes exactly like the OEM part. This is not a two-piece sandwich you have to assemble before it goes into the enlarger.

Only additional items needed: CA (super) glue and a hammer.

Not for Commercial Use

This model is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0): http://creativecommons.org/licenses/by-nc-sa/4.0/ Print it for yourself, for friends, or for your camera club. Selling prints or files, whether on eBay, Etsy, print-on-demand services or anywhere else, requires a commercial license. Contact me to arrange one.

Specifications

- Enlarger: Fits Beseler 23C-series enlargers (23C, 23C Series II, 23CII, 23CIII).

- Film: 120/220 roll film

- Used with: Mamiya RB67 and RZ67, Mamiya 7 and 7II, Pentax 6x7, 67 and 67II, Fuji GW670 and GSW670, Fuji GF670, Bronica GS-1, Plaubel Makina 67, and 6x7 roll film backs

Print Settings

- 0.08 mm layer height, 0.4 mm nozzle

- PLA, opaque matte black recommended (pins may be a light color)

- Print on the smoothest plate you have; avoid textured plates

- Do NOT use any XY hole compensation; the pin holes are an interference fit

- Top and bottom usually need separate plates

Files

- Negative_Carrier_Beseler_23C_6_x_7_Bambu.3mf (Bambu Studio)

- Negative_Carrier_Beseler_23C_6_x_7_Generic.3mf (other slicers, tested in PrusaSlicer)

- Negative_Carrier_Beseler_23C_6_x_7_top.stl (top plate with print-in-place hinge)

- Negative_Carrier_Beseler_23C_6_x_7_bottom.stl (bottom plate)

- NegativeCarrier_Aligment_Pins_Undercut_All.stl (4 pins per carrier)

- Beseler_23C_45_Negative_Carrier_Printing_And_Assembly_Instructions.pdf

Assembly

Full steps are in the included PDF: drive the 4 undercut pins, break the print-in-place hinge free, then glue the hinge to the bottom plate with CA glue.

Support This Work

Every carrier here is free and always will be. If one has earned a place in your darkroom and you'd like to say thanks, the tip jar is here: https://www.printables.com/@jschwefel_1261537/collections/3772975 Thank-you plaques at f/5.6 ($5), f/8 ($8) and f/11 ($11).