A friend of mine made me these super nice countersinks with a knurled aluminum shaft. To turn them into useful tools for manual work i designed and printed some hefts for them. For fun i did one in TPU, the other in ABS. Both work fine, but the TPU heft is much smoother and it’s slight flexibility gives a nice grip. The print quality of the TPU one is seriously much better, it was printed on the DuoCube, while the white one shows the Z wobble that my old machine acquired a few months back. I have to address that at some point in time, but hey, the machine is about 7 years old now and still pretty good for that.
Just a short post on the current state of compressed air cooling.
I am currently testing the Merlin extruder, i decided to name it in the same way as the hotend since the two belong together, which uses compressed air from an aquarium membrane pump (bubble pump). A medium size pump is sufficient for one hotend and one part cooler.
I made the mistake of ordering a larger pump than needed, which makes the printer unnecessarily loud due to to much air hissing out of the small gaps. On the up side, i might be able to push the Merlin hotend beyond 260°C with this. 🙂
This is something i wanted to do for a while. A handle, in this case a file heft, that is a mix of soft but tough material on the outside and hard plastic on the inside.
Like the bottle cap it’s ABS with TPU, but this time the ABS is the bulk of the piece. There are 2 perimeter shells of TPU around a 50% ABS hexagonal infill.
The heft weighs just 24 g, but is very stable with a smooth and grip friendly surface.
After some terrible experience with TPE i tried TPU. What a difference!
TPU prints super easy and gives you high quality surfaces and it is super tough.
Today my wife needed a new cap for an expensive cleaner, so i took 10 minutes to model one in C4D and printed it in TPU. The first print worked immediately, but i wanted to try something new. I set the TPU up together with ABS and printed the cap with ABS for the infill and TPU for the perimeter.
The result is very much worth the extra effort. The TPU gives a nice finishe and due to it’s elasticity it seals the bottle very nicely. The ABS gives the extra bit of stiffness so the cap does not deform so easily.
Next up is a file heft made up in the same way.
It was brought to my attention that there are still people trying to access my old TP, Xpresso presets and other example files.
If you are looking for any of those please check here
Many of the files will not load correctly in current Cinema 4D versions since they are partly over ten years old and to much has changed since then.
Our vacation in 2016 brought us to the Acores, more specifically to Terceira. Different to the largest island Sao Miguel Terceira has only very limited tourism. What we experienced is a lifely island with beautiful landscapes, coasts and buildings, as well as a lot of friendly people. Surprisingly many of whom spoke english, which easily made up for our total lack of portugese.
Terceira Mar Hotel was our first choice and it was a good choice. The room was clean, the view spectacular, the employees friendly and competent and the food good.
The huge salt water pool was a welcome refreshment after a day of touring.
Angra do Heroismo
Angra is the capital of the island and the largest city. The city center is in walking distance from the hotel, which made it easy to discover restaurants and shops before falling tired into our beds
Since Terceira is a volcanic island there is little what you would call a sandy beach. There are a few smaller patches that are inviting for a swim though. The locals mostly make do with what is prepared for swimming by adding ramps, handrails or steps.
On the Island
I let the images speak for themselves, this is one of the places I really want to visit again.
Since agriculture is a primary part of the islands economy a lot of land is used for cattle and crop, however the efforts to conserve the islands beauty are paying off, you don’t see any massive scale fields or herds, on the contrary, what is there adds to the experience.
The main reason for the existence of the island is volcanism and it shows. Not only at the coast where the lava met the see, but also inland where most of the walls that seperate the fields are made of volcanic rocks.
The last erruptions happened only a few thousand years ago so there is still some activity left.
One of the volcanos can be visited and differently to most volcanos on the world you can visit this on the inside!
The highest point of the island is Serra de Santa Bárbara. On a clear day the view is phantastic and you can see some of the other islands of the acores
On not so clear days you get moistureized 😉
Whale Dolphin watching tour was a failure success, we saw at least 20 dolphins.
Last but certainly not least, the portugese like their food and here on Terceira that means either sweet, meat, cheese or fish. All are excellent and even the smallest food joint can cook up a mean burger. Don’t forget to try the icecream and don’t bother with Strawberry or Vanilla, go full hog 🙂
I have decided to get rid of a good portion of my printed books. An estimated 3000 books are up for graps, mostly german Science Fiction and Fantasy. I am still sorting out many english books where i haven’t decided yet what to keep and what not.
I just want to give them to a good home so they are not up for sale but i will simply give them away to anyone who is interested in reading them 🙂
If you are interested mail me at firstname.lastname@example.org
All books have to be collected here in Friedrichsdorf.
On the left printed @0.15mm Layer height with an 0.5mm nozzle on my DuoCore @210°C. On the right printed @0.2mm Layer height with an unknown nozzle @200°C on a friends i3. What is interesting are the differences in slicing, the left was sliced using S3D, the right one with Slic3r.
I was very positively surprised by the new GreenTec filament from Extrudr, that i ordered on a whim alongside a couple of kilos of my usual ABS.
Not only does it produce a nice matte finish, it prints without any hint of warp, the stability is excellent and it is a dream to postprocess with any kind of tool.
The only two drawbacks i found so far are that it sticks so strongly to the printplate (aluminum with 3Dlac @60°C) that damage to the part or printplate are a very real threat and the current price of €56 / Kg
I hope the price goes down over time, but even at the premium it might be worth it, especially considered that i don’t have to feel so bad about producing garbage prints since GreenTec decomposes neatly, different to PLA.
As it turned out, it was a lot earlier than expected that the silicone sleaves from this posting
Silicone Sleave for Merlin made the trouble worthwhile. Some peculiar behavior of Marlin lead to a thermal runaway for a couple of seconds at full power. The silicone, that is rated for 450°C deteriorated, but the extruder remains unharmed and even the hotend survived thanks to the new cooling.
For those interested, what happened was that while homing Z Marlin stopped working completely. Everything was frozen including menu and the PID for the hotend, which got stuck with the heater switched on. I haven’t found the reason for the behavior yet, but i’ll do the homing before the heating in the foreseeable future.