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img 20190429_232443-1050695026.jpgimg grenade spice jar

Spice jar for grenade-sharp things

Since more and more bags and packaging of various spices occured on our spice rack , I was looking for some beautiful and practical spice jars.


3D- printable should be the most important feature of the object, so my first stop in Internet research was once again. There I noticed an admittedly unusual design of a spice jar in the form of a hand grenade.


For hot spicy things such as cayenne pepper and chilli this design seemed very suitable:


img grenade spice jar Design is available on thingiverse for Download


The advantage of the design is that it can be printed in a very uncomplicated way. There are 6 different parts to print:


img greande PartsThe red rimmed parts (metal ring and magnets) must be added separately. However, I have initially dispensed the magnets, to open and close the container on the lever works but not so elegant as it might with magnets.


Printing of the items was very uncomplicated. Support structures and largely Raft could be omitted. The material used was cheap PLA filament of owlsat (ebay) for only 16 € per kg.

All was printed on my anycubic i3 mega with a 210 degree nozzle temperature and a tape-backed printbed area. Thus, it was possible to print without heating of the printbed.

First, the lower shell was printed in green PLA:


img grenade case

Here it is important that you print bottom-up with the underside upwards. The object is positioned that way as default in the slicer. Otherwise it would have to be printed with support. I printed with 0.4mm nozzle and 0.25mm resolution, at rel. high printing speed of 80mm / s. Only the first layers were printed at reduced speed at 40mm / s.

Since all other parts should be printed differently in color, a filament change was required. Afterwards the printing countinued  with the lever in PLA silver gray:

img hebel grenade

As shown, the lever could also be printed without support also with 0.4mm nozzle and 0.25mm resolution at 80mm / s print speed.

Same color the two small parts needed to be printed for mounting at the bigger parts. Therefore, these were sliced and printed in a common print job. Due to the small size here, they must be printed with a small Raft, for better printbed- adhesion.

img kleinteile grenadeLast but not least, the lid and threaded attachment for the housing had to be printed. Both should be done in dark brown, so both objects were printed together in one print job.

img deckel greande

The thread attachment is best printed in the correct position, ie positioned top upside . Then you can print without support, because the overhangs shouldn't be a problem.


The assembly of the parts is very simple according to the exploded view shown on image in the head of this post. Prior to assembly, no further machining of the parts, such as grinding, sanding etc., should be required, the tolerances of the parts have been considered sufficiently large in the design. The threaded cover can be screwed into the housing easily and fits well. The (ornamental) lid on the threaded cover must be secured with a suitable adhesive.img grenade open

After assembly, the cover for filling the inside can be easily removed and screwed on again at any time. The spout opening can be easily opened and closed again without magnets via the lever.

img grenade top openMy 3D- print can be seen on thingiverse too as a make.

And the Oscar goes to...OPENSCAD !

Configurable Oscar statue for self-printing on 3D printer

img oscar openSCAD 02

Design idea

At the annual Oscar ceremony, these decorative Oscar trophies are presented. I wanted to create a statue based on this design, which should be configurable and of course also 3D-printable.
I wanted to give this object as a gift to a good friend, as a thank you that he has produced our wedding film so wonderful.


The original template of the Oscar statue is available in the Internet in various image formats. Starting from a good photo, I  began to be creative with excellent help of Opensource 3D software Blender.


img oscarBlender01

Blender is freely available as software and can be downloaded for free at This gives you a lot of possibilities to get creative in 3D. However, the software is not "self-explanatory". Therefore, as a blender beginner it is recommended to get acquainted with the immense variety of functions of this tool. There are a lot of good tutorials and tutorials on the net here, youtube is a hot tip here, as there are some very good video tutorials on Blender available. But I did not only need the design as a blender model, but it also needed the Labeling of the socket should be configurable, yet another very useful CAD tool had to be included. The open-source tool OPENSCAD can be used to create geometric bodies using a programming language. The bodies can be parameterized at runtime via appropriate OPENSCAD customizers via appropriate program parameters or variables. OpenSCAD is also available as a free download via

In any case, I recommend that you download the latest version as a development snapshot, as the stable versions currently do not have the customizer functionality. Tutorials are again very abundant in the network. Especially recommended for beginners are the tutorials available on the OpenSCAD homepage.

Last but not least  the Blender model had to find its way into the OpenSCAD environment. By default, Blender does not offer the option to export models in OpenSCAD format. However, a corresponding add-on is available via github. After the download and successful installation of the add-on in Blender you have the option in the export menu of Blender to select the format openscad. Thus the generated file can be opened in OpenSCAD. In OpenSCAD, the model structure is available as a polyhedron body. The net- structure of the model is stored via corresponding coordinates in the form of a multimatrix. In order to provide the socket with configurable writings, the program code generated from Blender has been correspondingly supplemented in OpenSCAD and provided with parameters for the OpenSCAD customizer:

img oscarstatue openscad 01

As a parameter, besides the text line, I have made available  also other parameters such as font and font size. This allows the socket to be largely labeled or configured as desired. In OpenSCAD, the program code can also be adapted by the user at will to his own interests, so there is still room for further changes and improvements.

Once the parameters have been set via the customizer, an STL file can be generated from OpenSCAD for 3D printing. However, due to the complexity of the multimatrix of the Oscar model, the rendering takes a little longer, depending on the performance of the computer being used. On my DELL G3 laptop with Core i7 8.Gen. CPU and GTX1060 graphics card as well as 32GB RAM  it's relatively fast, after about 10 seconds the rendering is finished.

Since OpenSCAD is also the basis for the customizer provided by thingiverse ONLINE, the model available on thingiverse can also be configured directly online on However, I only use OpenSCAD locally on the PC for the corresponding OpenSCAD models, because the thingiverse customizer online in my browser is unfortunately not reasonably usable.


The 3D printing of the STL file generated from OpenSCAD was then prepared using the slicer software CURA. In Cura I have set the layer thickness to 0.2mm, 10% Infill is absolutely sufficient. I added a PAUSE-AT-HEIGHT extension to change the color of the filament after printing the base. I also had to print support because the overhangs on the model's arms were too big:

img cura oscarstatue 01

Overall, the print on my anycubic i3 mega 3D printer took just under 4 hours.

The result is published as make on


The openSCAD-Object is available as download on thingiverse:

Link to openSCAD-object on thingiverse

3D printing: KitchenAid adapter for soda stream

img kitchenaid soda adaptor

3D-Print: KitchenAid Adapter for Sodastream

Our KitchenAid Sodastream looks very chic, so beautiful in black / silver:

img kitchenAid Soda

After some Problems at the beginning it works very well now. Bubbles our excellent Bühlertäler tap water. However, it has a small flaw: there is no suitable glass bottle for this model.

Neither Sodastream nor the Kitchenaid manufacturer provide suitable products for this purpose. That's a pity, so it was obvious to see if there is a suitable adapter with which smaller standard glass bottles with standard threaded fasteners can be docked to the kitchenaid connection.

First I tried the following part:available on thingiverse:

img sodastream v2 threadedpart
That was also very straightforward and easy to print. After testing i found out, only for sodastream with screw thread suitable, so not for our KitchenAid sodastream.

Next thing i tried was this:
img sodastream536857
Also not suitable for our kitchenaid, because the lower edge was missing for the gripping arm.

Unfortunately so, nothing suitable for our device was available on as stockpart. That's why I took the appropriate measurements, first from the Kitchenaid / Sodastream bottleneck:

img Flaschenhals kitchenAid

then from the bottleneck of a smaller lemonade glass bottle:

img Flaschenhals Limonadenflasche

With these measurements, I was able to use the CAD software fusion360 to construct a suitable adapter that makes the glass bottle fit the Kitchenaid connection. The result is prepared for 3D printing as an STL file available here on for download .

As printing material i recommend a material as stable as possible such as ABS or similar to give the adapter the necessary strength and stability. Support material or brims / rafts for print-to-bed adhesion are not required for printing. The print resolution should not be set too low due to the modeled thread, I have made good experiences with 0.15mm at 0.3mm nozzle size.

Please be careful when using the adapter. The Sodastream is a pressure device, and applying rapid pressure to a device not meant for such things can cause explosions and severe injury !!
I may not be held responsible for any damage or injury that may occur when using the adapter. Use at your own risk !



为了避免支持,我使用了Cura选项 - Make Overhang Printable - s.u.

img curaSettings lotus

这使得在我的anycubic delta Kossel plus 3D打印机上无需支撑,边缘/筏等即可轻松打印物体。 结果可以在thingiverse.com上找到:

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