The terraPin Pinhole Camera is unlike any other pinhole camera, 3D printed or otherwise. Developed after years of experience designing and constructing pinhole cameras, the terraPin is intended to be very easy to assemble, modify, and hack. Derived from the P6*6, the terraPin also uses 120 film, with a 6 X 6 cm frame, like the Holga, Hasselblad, and other classic medium format cameras. Dozens of P6*6 pinhole photographers around the world provided input and feedback to help shape the terraPin. The "Slider" joint between the body and extension allows for effortless changes in focal length, angle of view, and magnification. One camera body and film transport mechanism can be used with multiple extensions, each with their own pinhole and shutter blade. Additionally, an "Experimental Extension" allows for custom camera construction and a "TeePee mount" fits a standard TP tube. Assembly is a snap. A dovetail joint sandwiches the pinhole and shutter without fiddly fasteners. A single bolt holds the joint securely and provides a pre-load on the shutter fulcrum. Reduced number of glued joints in the terraPin. Velvet or felt is no longer required for light-tight construction. NOTE There is the potential for a light leak at the bottom of the extension-body joint, which manifests at the top of a landscape photograph (remember the image is inverted on the film). For more information see thing:703591: terraPin Stawp Gap NOW there are four complete extension options: Click links for more information on the newest extensions: 25.4mm "Incher" 18mm "DX18" Other features: CLICK HERE for the latest photographs I have made with the various terraPin cameras. CLICK HERE for terraPin prototyping and development pictures. To Do List: Butta Shutter remote actuated shutter UPDATES The terraPin was modeled using Tinkercad and OpenSCAD. Credit and thanks to Thingiverse citizen Aubenc for the Knurled Surface Library v2, which greatly improves the appearance of my cameras. ATTENTION This work is licensed under the Creative Commons - Attribution - Non-Commercial license. This license applies only to the files and documents available for download from the Thing Files section of this Thing. All other related content (photographs, videos, and verbiage such as contained in "Description" or "Instructions" ) are excluded from this license. with all rights reserved, unless specifically available for download This notice constitutes a clarification, not a change, to licensing for this design. 3D Printed Parts NEW Find complete collections of plated parts in ZIP files! Camera Body and Cap Extension Set (plated for convenience) Additionally, there are left-handed versions of the extension bodies and the pinhole carriers if you prefer the shutter on the left side. Tools and Materials I recommend that you print this in black PLA, if possible. PLA has the desirable properties of high strength, minimal warping, and biodegradability. Any part that serves to keep light out should be printed in black. NOTE: I have found that some black PLA filament is not opaque enough for camera building. Use the "Opacity Test Tool" (100% infill) with a bright (like, hurt-your-eyes-bright) flashlight. If, in a darkened room, you can see any - ANY - glow through the 1mm-thick center section of the Opacity Test Tool, you will need to find a more opaque PLA or paint the interior of your pinhole camera with black acrylic paint. The most opaque 3mm PLA I have tested is made by Shaxon and is available through Fry's Electronics among other dealers. Black PLA that has failed the opacity test include 3mm from Inventables and Lulzbot. I will update this list as testing and feedback progress. NOTE: PLA is shiny and you may get internal reflections that look like flares or ghosts. An easy fix is a coat of flat black paint (use a primer) on the angled walls inside the extension. Print Parameters: Detailed assembly instructions and video pending Helpful and interesting links: An encyclopedic article with cross references: http://en.wikipedia.org/wiki/Pinhole_camera A self-described comprehensive pinhole tutorial: http://www.diyphotography.net/the-comprehensive-tech-guide-to-pinhole-photography The basics from Kodak - a quick and dirty primer. http://www.kodak.com/ek/US/en/Pinhole_Camera.htm Make your own pinhole: http://www.withoutlenses.com/articles/how-to/drill-your-own-precision-pinhole-apertures Pinhole Designer - an excellent pinhole design and exposure calulator. The reciprocity failure function is gold. Sadly, Windows only, but worth it. http://www.pinhole.cz/en/pinholedesigner/ Mr. Pinhole - More calculators and more links. http://www.mrpinhole.com/index.php Worldwide Pinhole Photography Day: http://www.pinholeday.org/ A paper pinhole camera, 2D printed in a Czechoslovakian magazine, in the 1970's: http://www.pinhole.cz/en/pinholecameras/dirkon_01.html Books, books, books; Knowledge is power: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Dstripbooks&field-keywords=pinhole+photography