Home-made case for fanless computer.

   And the last detail. I’ll tell about final processing of aluminium surface. The effect was unexpected and gave me pleasure. At final stage, when all processing is over, I process the sheet surface with emery paper by hand. This helps make proper pattern and eliminate finally all defects left after polishing with angle grinder. The secret is simple. Emery-paper of 360 grain size plus dehydrogenated oil-based kalium glutamate (sunflower oil after chops fried in it suits perfectly). After processing and washing with soap powder, the aluminium processed with oil has even and noble silver colour and doesn’t have stains caused by unequal oxidation.

 
   You must adapt yourself to the work. Be careful working with fresh emery-paper at the last stage of processing. Avoid circular movements. Polish only in one direction.