Singer Heavy Duty 3.5mm gauge
This is needed to put your timing into spec (owner manual concerning fixing the timing is attached to this thing)
It's just a stupid simple 3.5mm block.
Print so its fairly rigid, and I recommend ironing. Just use calipers to ensure it's 3.5mm so sand/lap if need be! If you need an easy way to lap parts check this video out!!-- https://www.youtube.com/watch?v=uO2QHQSSpwE
Hope this helps!
singer_timing_block.stl | 684.0B |