Antique IBM Fire Alarm Restoration

I found this Fire Horn/Siren/Alarm thing on the old electronic bay (surprise, surprise) and since I had so much luck with my original fire bell restoration video I thought it would be a good subject for another restoration video. It was sitting on my shelf in a state of disrepair for so long because I didn’t know how to recreate the label. I thought about trying to repaint the old label, but it turned out terrible. Eventually I stumbled upon acid etching metal to create labels and decided it would be perfect. I had my roommate draw up the label in Adobe Illustrator and I printed it out onto some press’n’peel blue PCB etching paper then ironed it onto some brass plate. The acid for etching this brass plate is ferric chloride. I left it in the ferric chloride for a few minutes to get a good etch and the rest of the process is pretty self explanatory if you watch the video. _________________________________________________________________________ Instagram: