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Sebastian Feles – Assorted Scientific Services

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Builds

  • Tape dispeser for Kapton tape
    by Sebastian.Feles
    31. January 2023
    A tape dispenser made from a printed with a tear-off blade made from a jigsaw blade. The design is originally from Thingiverse user Deltabox. Perfect for storing multiple rolls of Kapton tape on the lab bench to save space.
  • Repair of a WMF Kult milk frother
    by Sebastian.Feles
    3. August 2022
    The WMF Kult milk frother is a manually operated device that rotates the whisk via an up and down movement and thereby froths the milk. The principle of operation is similar to that of a humming top. In the hand grill there is a sleeve around which helical grooves wind …

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  • Cardanically suspended and fourfold ball bearing beverage holder
    by Sebastian.Feles
    15. March 2022
    Suspension of a vessel holder from a rack by means of two intersecting perpendicular pivot bearings. Sturdy construction made of weather- and sea-resistant plastic with stainless steel screw connections. Two bearing points per ring for the highest possible stability. Thereby high degrees of freedom in the swing-out movement. Suitable for …

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  • Clamping claw for micro milling machine
    by Sebastian.Feles
    29. September 2021
    Inspired by a no longer needed ITEM system profile I had the idea to build a small miniature milling machine from old parts. I will report about this separately. I used the small, but for my purposes perfectly adequate Proxxon KT 70 as a cross table. To fix the workpiece, …

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  • 160 W laboratory power supply
    by Sebastian.Feles
    7. September 2021
    I wanted to have as compact, small and flexible a laboratory power supply as possible with a maximum output voltage of 32 V and 5 A. It was especially important to me that it should be completely passively cooled. So I can use it overnight to charge different batteries without …

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  • Laboratory power supply for monitored USB power feed
    by Sebastian.Feles
    7. September 2021
    Power supply via USB is practically an industry standard for many devices nowadays. Originally only intended to supply power to small devices such as computer mouse or keyboard, the USB connection is now operated without a data line practically as a universal 5 V socket. Here, the intended limit ranges …

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  • One 18650 battery instead of eight AA batteries for rc control
    by Sebastian.Feles
    3. June 2021
    The manufacturer has provided eight AA batteries with a cell voltage of 1.5 V for the RC model remote control. These are connected in series to achieve a final voltage of 12 V. Having eight batteries or rechargeable batteries always in stock was too much and too expensive for me.Instead, …

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  • Simple spacers for balcony flower boxes
    by Sebastian.Feles
    31. May 2021
    3D printing is the perfect tool to fix little things in everyday life that are always annoying but too time-consuming to fix with other methods. The new brackets to attach flower boxes to the railing of our balcony are (like most things purchased) poorly thought out. I have simply constructed …

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  • Universal battery charging slot
    by Sebastian.Feles
    27. May 2021
    Universal battery charging slot for all available types of battery round cells.Any primary or secondary cell can be permanently clamped and connected to a measuring instrument, laboratory power supply or electronic load. The current collectors are pressed firmly onto the battery terminals via the spring, which provides a reliable and …

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  • Walkie-talkie modified into a baby monitor
    by Sebastian.Feles
    26. May 2021
    Commercially available baby monitors are ridiculously overpriced, usually only allow one-way communication and cannot be used for any other application. Once the child has outgrown the device, it is useless. In addition, the radio range of the devices is usually very limited.An alternative would have been smartphone apps or the …

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  • Improvements of my sand polisher
    by Sebastian.Feles
    8. May 2021
    Introduction After prolonged operation of my sand polisher, the problem of the glass jumping off the guide gears due to the axially opposing force occurred again and again. As a result, the gear ring is no longer in the groove and the drive gear slips. Prolonged and unattended operation is …

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  • Sand Polisher
    by Sebastian.Feles
    29. April 2021
    Introduction I have a 3d printed sand polisher from different designs from various users at Thingiverse. Especially for small 3d printed parts made of PETG, where the surface is often not perfect, I hope to be able to significantly improve the surface finish over several polishing processes. A simple 12 …

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  • Microscope Ringlight
    by Sebastian.Feles
    28. April 2021
    Introduction Circular, uniform and bright illumination is an essential requirement in stereomicroscopy. Unfortunately, cheap ringlights are either not bright enough or too simple in design. Industrial illumination systems for stereomicroscopes (e.g. SCHOTT, or ZEISS), on the other hand, are ridiculously expensive. So it was up to me to build something …

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  • Universal bottle washer for the sink
    by Sebastian.Feles
    20. April 2021
    Introduction For quite some time I have been annoyed by the fact that it takes a lot of effort to clean bottles. In the dishwasher they do not get properly clean or deposits form in them. To rinse the bottles constantly by hand with glass beads or rice takes me …

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Recent Posts

  • Tape dispeser for Kapton tape
  • Duplo compatible dining table
  • Egg box for quail eggs
  • Repair of a WMF Kult milk frother
  • Cutlery basket for dishwasher

Recent Comments

  • Lasermessgerät zum Bestimmen des Schleifwinkels von Messern - Sebastian Feles - Assorted Scientific Services on A microscopic view of dull and sharpened knife blades
  • Universal Flaschenspüler - Sebastian Feles - Assorted Scientific Services on Housing for Mean Well LRS-100 power supply unit
  • Verbesserungen am meinem Sandpolierer - Sebastian Feles - Assorted Scientific Services on Sand Polisher

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