Our expedition vehicle based on a Mercedes-Benz Sprinter 4×4 leaves only a few options to ventilate properly from the factory. Due to the curvature of the vehicle’s sides, it immediately rains in when the sliding window is open, and the airstream pushes inward unpleasantly while driving. I have made suitable perforated plates and transparent window …
Monthly archives: September 2021
Magnetic clamp for curtains in camper van
Flexible magnetic clamp to attach curtains to the center pillars in the motorhome. The clamp consists of four parts with three joints. The attachment is made via strong neodymium magnets.Three M3 x 35 mm cylinder-head bolts and five M3 self-locking nuts are required for mounting. Two M3 x 16 mm countersunk head screws are used …
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Clamping claw for micro milling machine
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, I designed and 3D printed …
UV photography using longpass filter
Typical for modern digital photography is the protection of the image sensor against UV-A and UV-B radiation in the wavelength range of 280 – 380 nm1. For this purpose UV blocking filters are used which are nothing else than longpass filters with a minimum transmission in the UV range and a maximum transmission in the …
160 W laboratory power supply
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 being disturbed by the noise …
Optimization of the extrusion temperature with a heat tower on a Creality Ender 3 Pro and the Prusa slicer
In 3D printing, the extrusion temperature, i.e. the optimum melting temperature of the filament plastic used, is of considerable importance. Manufacturers usually specify a recommended temperature range for this. Depending on the material, this can be very low, such as with Polylactic Acid (PLA), at ~210 °C or very high, such as Polyetheretherketone (PEEK) at …
Laboratory power supply for monitored USB power feed
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 for voltage and current are …
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Repair buckle suitable for Ortlieb bicycle bags
4,45 € plus shipping The buckles on both sides of my Ortlieb OFFICE-BAG bicycle bag are broken (like so many others). This means that the bag can no longer be closed.Since the buckles are sewn into the tabs of the lid, it is not easy to replace them. Either the flap must be cut open …
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Inside caliper with scale
For a customer order, I was to insert an intermediate layer within a flower vase at a certain height. Due to the height and shape of the vase, which tapered downwards, it was practically impossible for me to determine the inner diameter at the defined point.What I needed was an inside caliper. Because of the …