Stadsherberg 2024

At the stadsherberg (city inn) just before Xmas 2024 I gave a workshop light boxes. Construct your own light box. Cardboard, lights, pencils, acrylic markers and of course glitter were provided. I only had to prepare it, for the participants it was obvious what to do: have fun together, share the stuff and i could “sit on my hands” (watch and enjoy), occasionally gently creating a working place for other participants.

Piz Roseg model

foto: google earth

3D printed model of the mountain on the border of Switzerland and Italy. Usually a cad program that uses heightfields (greyscale to elevation) is limited to 256 steps. That would result in stepped slopes, not nice to look at. I used Rhino 3D and the grasshopper plugin Bison to import the original geotiff files with a higher resolution (16 bit = 65K levels). Much better, smooth slopes.

However, it seems that Bison does not work for the Dutch DEM files (from the Algemene hoogtekaart Nederland) ahn.nl which is annoying.

Janninks light

Janninks tower, part of an old industrial building in Enschede. A couple of years ago i made a lantern from it with the little candle LED’s. And now it is also working with 220V lamps. It took a while to rebuild it, the thin paper design has evolved into two lamps: a thick cardboard design with a pucklight on batteries and a 160 gr paper design with 220V lamps. I’m particularly happy with the shade inside that guides the light very well.

Safety is always a concern with 220V applications. I use LED lamps (E14 fitting) that do not turn hot. But you never know. So I experimented with flame proving the paper and found a good solution that makes the paper flame retardant, this works well. For the children I also made a variation that uses a battery lamp. Much effort was spent to make it easy to build. It is safe and the lamp can be constructed without folding or gluing.

Welding a trailer tipper

I’m building a frame to turn the trailer on it’s site and move it through a narrow corridor. It is for an exhibition in the Vrijhof at the Twente University.

it’s constructed with the original edge posts of the trailer and it will slide in position. A “key” will lock it in place. It is a crazy idea, flipping the trailer. Why don’t people just walk out to have a look at it.

Here is the site of Lumi.