More monoblocks pictures.
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The OPTs are made in DIY mode. The outer casings of the transformers are purchased from aliexpress.
The housings are made of anodized aluminum panels and laminated wood processed by milling, staining and varnishing. The front panels are made of aluminum and are inscribed on a CNC. Then they were immersed in a solution of caustic soda, inscribed with ink pen for technical drawing and finally covered with transparent varnish.
Congratulations 
This really a great job vidax!
Especially those front panels are looking very professional. A real joy to look at.
Especially those front panels are looking very professional. A real joy to look at.
OLD Hemis maybe?
Many engine builders used a black wrinkle finish on those giant valve covers back in the 70's. That paint is rather scarce here today. The common wrinkle finish will not handle the heat seen in valve covers.
