The Ultimate Darkroom Printing Test Strip Maker

thingiverse

It's unnecessary! It's over-engineered! It's... 1. **Effective.** Consistently prints the exact same piece of image area onto each of 4 test strip sections, so you can make 1:1 comparisons between different exposures. 2. **Efficient.** Each test strip is 2.5 x 4", or 1/8 of a standard 8x10 sheet. 3. **Flexible.** Height adjusts to match focus with virtually any easel. 4. **Fiber Friendly.** The carriage and optional drying rack defy stubbornly curling paper and keep things nice and flat. 5. **Fun.** Magnets align each section of the test strip as you advance it. Clinically proven to be weirdly satisfying. 6. **3D Printer Optimized.** You'll find no supports, tough overhangs/bridges, or non-chamfered edges here. ###Bill of Materials### * (1x) Of each .stl file * (8x) [#6 x 3/8" screws](https://www.amazon.com/Hard-Find-Fastener-014973234140-Piece-100/dp/B00L1IV55E/) (if you have anything similar, try those first) * (10x) [6x3mm neodymium magnets](https://www.amazon.com/FINDMAG-Magnets-Magnetic-Whiteboard-Refrigerator/dp/B08M3YP56J/) * (4x) [M5x20 bolts](https://www.amazon.com/iExcell-Thread-Socket-Screws-Finish/dp/B08S6RTNB4/) - I used M5x25 hex heads that I had on hand, and found them unnecessarily long, but they work fine * (4x) [M5 hex nuts](https://www.amazon.com/Xiaoyztan-Metric-Stainles-Fasteners-Screws/dp/B08X38QZRC/) * A little superglue. I like [this gel stuff](https://www.amazon.com/Loctite-Control-4-Gram-Bottle-1739050/dp/B00ELV2D0Y/) * Some sticky poster tack for the feet helps the housing stay put while you're advancing the test strip ###Video Instructions### https://youtu.be/HvNyREFy9s8