Milling interlocking wooden rings

[Johan von Konow] wanted to make something special as a wedding gift to his wife. He decided a pair of interlocking miniature rings would be the perfect keepsake. He started his search for a way to mill the wooden rings from a solid piece of wood, and documented his journey for our enjoyment.

This project poses an interesting challenge. Most CNC mills offer three axes of freedom, but he only had a 2D mill meant for routing PCBs. This means the cuts can only be made from the top down at one depth. In order to fabricate the rings he needed to cut from more than one side. With more study, [Johan] discovered that it would be necessary to cut the wood stock from eight different angles before the rings would be complete.

The solution to the problem was to first mill a jig to hold the wood stock. It has positions to hold the stock at each different angle. The final step before starting the cut was to mill the stock itself to perfectly fit his custom jig. We think it turned out great, thanks in part to hand filing, sanding, and polishing to smooth the marks left from milling.

Photographing stuff that’s not there by using stencils

This image was not made in post production, but captured during a long camera exposure. The method uses stencils to add components to a picture. [Alex] built a jig for his camera from a cardboard box. This jig positions a large frame in front of the camera lens where a printed stencil can be inserted. He printed two identical sheets of paper with black covering the area all around the 8-bit joggers. When properly aligned and inserted in the jig, the black parts of the stencil will act to mask the areas where he wants to capture the natural surroundings of the image. Once the camera shutter is triggered, he uses a flash to illuminated the stencil, then removes the the paper image from the jig and ambient light from the dark surrounding is captured during the remainder of the 20-30 second exposure time. The real trick is getting the light levels between the flash and the ambient light to balance and produce a result like the one seen above.

Is anyone else hearing the Punch Out cut-scene music in their heads right about now?

3 camera booms for your Wednesday afternoon

[Andrew] tipped us off about his Cable Cam built out of some lumber and clothes line. It is small enough to fit into a backpack,  includes a safety line and the camera can pan and tilt. A future version is planned with a small remote motor to move the trolley more effectively.

[Andrew] accidentally linked us to his other Camera Crane, taking the same ‘cheap yet effective’ approach as his Cable Cam. Once again, just some lumber and creative engineering are used to pull this one off.

For those without the ability to weld, check out [Bill Van Loo’s] all wood version of a Camera Crane. Same parallelogram design, without remote video output or central pivot.