`
`0.062R
`
`0.040" to 0.078"
`
`0.032R
`
`Wall Thickness Ranges for Radii Tolerances
`
`0.020" to 0.040"
`
`0.016R
`
`Radii Minimum
`
`For dimensions over 10.00" and for materials not listed, please contact an Alpha Plastics Sales Engineer.
`Dimensions inside a hollow require considerably wider tolerances.
`Outside and inside cornerradii can not be controlled below 0.015R. Largerradii improve material flow and eliminate breaking points.
`
` +/-3 Degrees
`
` +/-3 Degrees
`
` +/-3 Degrees
`
` +/-3 Degrees
`
` +/-5 Degrees
`
` +/-2 Degrees
`
` +/-3 Degrees
`
` +/-2 Degrees
`
`Angles
`
` +/-8%
`
` +/-0.125"
` +/-0.093"
` +/-0.065"
` +/-0.050"
` +/-0.037"
` +/-0.035"
` +/-0.027"
` +/-0.025"
` +/-0.020"
`+/-0.010"
`/0.010
`
`Acrylic
`
` +/-9%
`
` +/-0.125"
` +/-0.093"
` +/-0.075"
` +/-0.055"
` +/-0.040"
` +/-0.037"
` +/-0.030"
` +/-0.027"
` +/-0.022"
`+/-0.010"
`/0.010
`
` +/-8%
`
` +/-0.125"
` +/-0.093"
` +/-0.065"
` +/-0.050"
` +/-0.037"
` +/-0.035"
` +/-0.027"
` +/-0.025"
` +/-0.020"
`+/-0.010"
`/0.010
`
`ASA
`
`Polycarbonate
`
` +/-8%
`
` +/-0.125"
` +/-0.093"
` +/-0.065"
` +/-0.050"
` +/-0.037"
` +/-0.035"
` +/-0.027"
` +/-0.020"
` +/-0.015"
`+/-0.010"
`/0.010
`
` +/-10%
`
` +/-0.125"
` +/-0.125"
` +/-0.093"
` +/-0.065"
` +/-0.045"
` +/-0.040"
` +/-0.035"
` +/-0.030"
` +/-0.025"
`+/-0.010"
`/0.010
`
` +/-8%
`
` +/-0.125"
` +/-0.093"
` +/-0.065"
` +/-0.050"
` +/-0.035"
` +/-0.030"
` +/-0.025"
` +/-0.017"
` +/-0.012"
`+/-0.007"
`/0.007
`
` +/-8%
`
` +/-0.125"
` +/-0.093"
` +/-0.065"
` +/-0.050"
` +/-0.037"
` +/-0.035"
` +/-0.027"
` +/-0.025"
` +/-0.020"
`+/-0.010"
`/0.010
`
` +/-8%
`
` +/-0.093"
` +/-0.075"
` +/-0.060"
` +/-0.045"
` +/-0.030"
` +/-0.025"
` +/-0.020"
` +/-0.015"
` +/-0.010"
` +/-0.007"
`/0.007
`
`Polypropylene
`
`Polyethylene
`
`Materials
`
`Polystyrene
`
`ABS
`
`Rigid PVC
`
`Wall thicknes
`
`Other Dimensions by Size
`
`7.00" to 10.00"
`5.00" to 7.00"
`4.00" to 5.00"
`3.00" to 4.00"
`2.00" to 3.00"
`1.50" to 2.00"
`1.00" to 1.50"
`0.500" to 1.00"
`0.125" to .500"
`up to 0.125"
`upto0.125
`
`Dimension Type
`
`All recommendations or suggestions contained in this document must be evaluated by you to determine the applicability or suitability for your particular plant operation.
`No representation as to accuracy, usability, or results should be inferred.
`Although this information is intended to be accurate, it is provided without warranty of any kind.
`
`Alpha Plastics maximizes tolerance control through (1) vacuum sizing, (2) streamlines die design, and (3) strict quality controls.
`Allowing tolerance relief in less critical are as will always improve overall extrusion quality and throughput.
`In practice, we usually find that only a few critical dimensions (such as mating are as with other parts) actually effect part function and must be controlled cretically during extrusion.
`Holding all dimensions to extremely tight toleraces can be prohibitively expensive.
`It is critical, however, to take great care to determine required working tolerances before purchasing potentially unnecessary tooling.
`Please keep in mind that (1) general tolerances vary by material extruded, and (2) specialized tooling can hold tighter tolerances than those listed below.
`Because extrusions are not 100% contained by metal tooling, tolerances must generally be looser than other nolding processes.
`In an effort to assist our customers in determining the tolerance capabilities of the plastic extrusion process, we have developed this guide,
`
`Plastic Extrusion Tolerance Guide
`
`0001
`
`EX1029
`Yita v. MacNeil
`IPR2020-01140
`
`
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