Originally shared by Alex Krause
Wow, crazy difference between the engraves.
A little more info I just found:
"Cast sheet has the following benefits over extruded sheet:
- less low angle distortion
- low minimum run/order quantities
- thousands of standard and custom colors available
- greater range of available thicknesses (available in thicknesses greater than 1.00")
- slightly better chemical resistance
- less tendency to melt or chip during machining
- slightly higher service temperature
- more suitable for use involving continuous contact with water
- better capability to handle long-term mechanical loads
Extruded sheet has the following benefits over cast sheet:
- lower cost
- better thickness tolerance
- less dirt,lint or particulate contamination in the sheet
- cements and thermoforms faster"
Source: http://www.usplastic.com/knowledgebase/article.aspx?contentkey=887