vaderdarth
Master Member
Very true clutch... The eveness of the heat across the sheet of ABS can change the thickness of the sheet before it's vacformed, during the vacforming (stretching) and pooling near the base. Most every vacformed piece will have varying thickness if you wanna measure it with your calipers. Typically, the plastic sags when heated prior to pulling.......and it's not uniform.....the middle is usually thinnest. But that too can vary if you have "hot spots" in other locations. Sometimes the heating elements can droop from their proper location and cause an area to heat up more. That's just one of the drawbacks of the process.
Dave
Dave