About Me

Decades ago someone said in a popular german tv show for kids regarding nuclear waste: Someone of you might have an idea how else we could generate electricity. This was part of my daily job a long time until you realize that there are lots of technological innovations for many problems, but hardly any against egoism, unreasonableness and excessive greed. I try to repair everything, I’m not using a car for daily life and try to do everything by bicylce. But all this doesn’t take my passion for mechanics and repairing.

On this page I publish everything I feel like doing, without commercial purpose. So you can find here some repair instructions and technical background knowledge about a motorcycle as well as information about hydraulic impact tools or other things that apparently have nothing to do with each other.


The name was originally „Hard Rock Intrusion Tools“ created for some company ideas with similarities to my name. It was then used for this website because of its uniqueness and has no other meaning.


  • 2010: Apprenticeship Mechatronics
  • 2013: Bachelor of Engineering: Mechatronics and Microsystem Electonics at Heilbronn University
  • 2014: Control Engineer at Heilbronn Coal Power Plant
  • 2016: Master of Science at Bochum University of Applied Sciences
  • 2017: Reseach Assistant at International Geothermal Centre
  • 2018: Engineer Power Generation at STEAG GmbH in Essen
  • 2019: Software Engineer at Weber Maschinenbau Neubrandenburg GmbH

Latest Blog Entries

  • Thermal Repasting Lenovo X380 Yoga
    On my Lenovo X380 Yoga, I wanted to find out how much the performance can be improved after a year […]
  • Matlab: Scripts, Functions and local Functions
    Sooner or later you come across the fact that you can not only create scripts and save them as .m […]
  • Contact Form 7 in Neve Theme with Elementor
    The WordPress theme “Neve” used in a demo on the Elementor landing page uses “WPForms” for the contact form. I […]
  • Hello World
    This webpage is currently built from scratch, some things will change in the next weeks and later. It will become […]
  • English Support
    I’m trying to translate this website to english from time to time. This is, like everything else, time-consuming. If there […]
  • RS 250 Workshop Diary
    My workshop diary for the Aprilia RS 250 is now back online. Content is not translated yet but pictures speak […]

Hydraulic Down-The-Hole Hammer Drilling

As I worked some years on the topic, I’m still interested in the development of hydraulic down the hole hammer drills. So I decided to make some pages to share my knowledge here.

What are these tools and what are they used for?

Which innovation lead to the development of thees tools in history?

How do the hydraulic-mechanic percussion drives actually work?

Workshop and Mechanics Corner

Decades ago, this was around 2007, I bought a small Aprilia RS 125 motorcylce and gained some experience in reparing it. I also had a small website (sonic-rs.de) and was elected as moderator in a bulletin board regarding these bikes.

Most of my knowledge, tipps and ideas can be read online on the pages for the RS 125 here.


Social Network