25-01-2015, 20:52
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Head Mentor
AKA: "John"
 FRC #4488 (Shockwave) Team Role: Mentor
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Join Date: Jan 2014
Rookie Year: 2002
Location: United States
Posts: 140
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Re: How thick to buy HDPE?
The problem that our team ran into when buying HDPE for the field elements was finding the correct finish. The chute uses a 'smooth' finish while the ramp and step use a 'orange-peel' texture. There is a significant friction difference between the two. Due to the texture, I wouldn't recommend going thinner than 1/16". However, I think your limiting factor will be what size you can find with the 'orange-peel' finish (We have tons of local plastics suppliers but only one had 'orange-peel' and only in 1/4" sheets). I'm not sure what McMaster has, though I'd guess it's standard 'smooth' finish. Good luck!
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Team 4488 Head Mentor
2015: [Carson Division Finalists (World Championship)], [Finalists, Entrepreneurship Award (PNW District Championship)], [Winners, GP Award (CWU District)], [Winners, Engineering Excellence (Oregon City District)]
2014: [Galileo Division Finalists (World Championship)], [Finalists, Quality Award (PNW District Championship)], [Winners, Industrial Design (Wilsonville District)], [Winners, Chairman's (Oregon City District)]
2013: [Rookie All-Star (Curie Division)], [Highest Rookie Seed, Rookie All Star (Autodesk Oregon Regional)]
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2006-2012: Mentored various teams in OR and WA
2005: Team 1510 captain, founding member
2002-2004: Team 955 student/captain, founding member
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