met hoofd hart en handen
Mijn buurman Dario Scapitta had strakke standaards nodig voor zijn sieraden. Frezen dus. De steuntjes kunnen uit elkaar worden genomen en als flat pack mee naar beurzen.
Dit is zijn instagram site: instagram.com/darioscapittadesign/
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.
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 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.
It works fine now, Nicole found the proper way to make tiles that stay flat in the kiln and i found the proper settings of the laser. We’re going to sell these.
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.
Nederlandse hoogtegegevens weet ik nu wel te vinden op AHN.nl.
Maar hoe zit dat in de rest van Europa. Om maar te beginnen met het Gardameer.
Ik wist al van de Nasa shuttle missie: radaropnames. De hele aarde is er min of meer mee opgemeten. Over de kwantiteit niets dan goeds, maar de kwaliteit is minder dan van de lidar opnames van AHN. Niettemin: als je niks beters hebt kun je hier toch al heel veel mee doen.
Hier kun je de met SRTM opgemeten gebieden selecteren en de kaarten downloaden:
Kwaliteit: de kaarten zien er soms nogal beroerd uit: JPG artefacten (waarom is dit niet als png te downloaden?) en ontbrekende pixels, vermoedelijk blinde hoeken voor de radar van de Spaceshuttle. De hoogte-resolutie van de radar opnames is beperkt: ongeveer 15 – 20m. Lidar is in de orde van mm nauwkeurig.
Hier vind je meer over bronnen van goede DEM (digatal elevation data) :
Maar met wat op goed geluk zoeken (Google: Italia + dem) kwam ik toch op een prima bruikbare site:
https://tinitaly.pi.ingv.it/Download_Area1_1.html
Hier staan de Italiaanse data, van prima kwaliteit. En je kunt ze met QGis openen en bewerken, het zijn geotiffs, dus de kaarten sluiten goed aan. En in tegenstelling tot AHN zijn de kaarten ook veel groter (AHN: 5 x 6,25 km), wat veel practischer werkt.
https://ilgardaonline.it/en/geologia/
3D print van gemaakt. Met silk pla (dual color) krijg je twee kleuren, die in dit geval de niveauverschillen goed accentueren, de “zebra” weergave van het licht hellende gebied pakt heel gelukkig uit.
Wowlab is closed until August 18th. After 18th until end of Aug: Wowlab is open but not daily and depending on the weather that day.
Fair weather means bikerides or sailing. Or out for a walk. Or so.
About to make my A4 printing press for lino and stamps. I can weld it myself, saves 300-ish euro. How hard can it be. This is the prototype sketch, made in Rhino.
This simple press is capable of exerting a huge force on the printing block, around 1000 kg, by clever use of levers instead of using a screw, which has a lot of friction and requires more force from the person who operates it.
This makes it easy te operate even by children. However, many presses are not very user friendly. The press is optimized on costs and not on user friendliness.
Here is the inspiration. It is a very practical and useful press, but there are some improvements possible, especially the lever is rather awkward and very non ergonomical.
After the maker residency where I worked successfully with a Prusa Mk 3 and Mk4 printer, printing TPU for stamps, I decided to buy a new, modern printer. The one I already had dates from around 10 years ago and is gathering dust on the shelve now since around 2 years. I left 3D printing for what it was, focused on the laser and the router and if i had to print at all, i went to Fablab Enschede with it’s farm of Ultimakers. Even though it was not a bad printer, I never managed to get the multimaterial working properly (dual head, always leaking material from the head not in use and it had to be aligned very carefully) . Printing took just too long, and it had to print slowly to get a decent quality. Besides, the slicing software and the display were not user friendly to use. I mastered the levelling of the printing plate by hand (lots of trial and error), but it took too much time. I also wanted to get rid of the Peek connections in the printing head, they caused to much leakage and jams. Too much trouble to keep tinkering with it….
But now i enjoy printing again. The new machine, a Bambu A1 combo with multimaterial device, prints pretty good, straight from the box. And it prints fast. There was a flaw however, the Z axis was not exactly perpendicular to the building platform but with a small script in Grasshopper / Rhino3D I corrected that quite effectively and it prints at a 90 degree angle now. Which is very useful for architectonical maquettes (models).
Sure, i could have purchased a Mk4 as well, but i have there is such a huge difference in price… and the multimaterial option is also important. So i gave in and choose for the closed source Bambu with doubts about client helpdesks and so on. Still, i do not regret it.
TPU (rubber) printing works fine and the material is surprisingly strong, it just does not tear apart. I use it for stamps.
And last but not least I can print landscapes with it, which is useful for my work. Next test will be with multicolor, such as blue for below sea level, white for the 0-meter line and other colors for the dry land. It will be a nice addition to the lasercut, stacked models i made up to now.