Then in the summer of 2014 there was the release of the second console water cooler. The water cooler for the Xbox 360. In addition, the range was expanded with another Playstation 3 water cooler for another revision. In addition, I began to deal with the topic of engraving a little closer. First of all I needed some hardware. Hardware that could also be used to mill finer cooling structures.
Regarding engravings and finer structures I used a 300W engraving spindle from Han-Qi. It quickly became clear that this would be a significant gain, as the spindle handles up to 2mm well. Engravings and structures with 1mm slot widths were now not much of a problem time-wise.
However, the wear at 60,000rpm was enormous. So I decided to test an engraving tip. After some tests in different materials, the correct “cutting data” could also be found quickly. The age of engraving has begun. In December 2014, the first cooler with an engraving was then delivered.
It went by the name GTX 980 Reference. In the meantime, there were also a number of custom designs, including one customer who wanted a blue anodized water cooler. No problem for an extra charge.
At about the same time I switched from wet milling, to MMKS (minimum quantity cooling lubrication system) to keep the consumption of the expensive coolant low. On the big machine, about 3-4l of coolant was lost daily. I was able to reduce that to about 1/3 with the MMKS. The coolant no longer comes as a “water jet” onto the tool, but as a spray mist. This was to become a considerable problem later on, which was still not fully solved.
Due to the new milling spindle, a start was made on introducing finer structures into the water coolers. This was started in February 2015 with a GTX 980 water cooler. I also found sources for colored acrylic glass. So it was now possible to offer water coolers in all colors and also to combine them. More coolers with nozzle technology were developed. For example for the Zotac GTX 980 AMP
In spring 2015, the machine park was to be expanded by an engraving machine. There I originally only wanted to engrave and mill smaller acrylic parts. But that failed me completely with the China CNC 3020. The machine did not meet my requirements in any way. So I started to build myself a small HSC milling machine. In the meantime, the nozzle technology has also made it into fullcover CPU water coolers: Asus X99 A. Other custom designs were requested and delivered to satisfied customers.
In addition, I built a small HSC milling machine with a travel of 300x240x90mm from solid aluminum with a 1.2Kw China spindle which I ground out (runout 5µ) with 60,000 rpm. The engraving went super, the milling of the acrylic glass edges goes excellent and everything super fast (feed rate up to 6m/min). So the small engraving spindle on the Bf20 Vario was obsolete. It was dismantled and sold.
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