VW Horn Button 211.415

Horn Button for VW Bus. Part Number 211.415. I found that the best way to print the flat emblem ("VW Horn Button.stl") is face down on build plate using support for side groove slot. The other two models ("VW Horn Button Original.stl" and "VW Horn Button Original with logo.stl") printed best with button facing up at 45 degree from build plate using supports and brim For the retaining clip, I cut a piece of 80/20 bronze wound guitar string (5th A 0.042" diameter) 7-3/4" long. Wrap tightly around a 5/8 to 3/4 diameter bar or tube to create circular profile. The spring-back will make wire just slightly larger than the groove in button. Bend ends approx 1/2" on each end. Insert ends of clip into slot in groove. Assemble by inserting the button into the metal cup starting at the closed end of clip, and work around to the open end of clip. as last part of insertion. UPDATE: After successfully printing parts with PETG, I decided to try ABS and vapor smooth part. Because ABS tends to warp easily, I had trouble printing the part, as the initial form would warp between layers 1 to approx 20, and the part would separate from build platform. To solve this, I added a tab to part bottom.("VW Horn Button Original with logo and base tab.stl") After printing, I cut this tab off with a bandsaw (could also be cut with a hacksaw). I then sanded and vapor smoothed to provide a shiny smooth surface, which kind of gives it a cool vintage 'Bakelite' look. Vapor smoothing was done as shown in photo, using paper towel wedged in place with cardboard, and saturated with acetone. Part is placed on a pedestal, with an upside down plastic lid filled with water to provide a water seal to retain vapor.