Tech Thoughts

“Tech thoughts for better planet and better ourselves.”

  • DIY Safe and High-Resolution Photoresist Dry Film Using Benzophenone and PVA
    Photoresist dry film is a crucial component in the fabrication of printed circuit boards (PCBs). The process involves applying a thin layer of photoresist on top of a copper-clad board and exposing it to ultraviolet (UV) light through a photomask, which selectively hardens the photoresist in certain areas. The unhardened photoresist is then washed away, […]
  • Benzophenone and PVA based low-cost, safe and high-resolution photoresist for PCB fabrication.
    For low-volume and low-cost fabrication of printed circuit boards (PCBs) in a prototyping lab or in an MSME setting, PVA and benzophenone based low cost photoresists could be of high benefit for rapid fabrication and testing of the components. The main components of the negative type photoresist are Benzophenone and Poly Vinyl Acetate (PVA), generally […]