Thermoforming Dimensions and Tolerances
Our thermoformed plastic parts are made to meet the following dimensional and tolerance requirements for all of your part needs:
- Formed Dimensions reference trimmed dimensions for a heavy-gauge thermoformed plastic part whether it has been produced by vacuum pressure forming or twin sheet process.
- Trimmed Dimensions apply to our CNC or hand trimming processes
- Secondary Operation dimensions apply to all of our finishing processes.
- Fabricated Part Tolerancing are our maximum limits for dimensional variation that we look for in our Quality Assurance Process for your thermoformed part.
Formed Dimensions:
Certain materials and geometries may require higher tolerances.
Any trim to non-tool surface is “Reference Only”.
Trimmed Dimensions:Primary: |
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| US Units | Millimeters | ||
| 1 Decimal place 2 Decimal places 3 Decimal places |
± .050″ per first 12″ ± .030″ per first 12″ ± .020″ per first 12″ |
1 Decimal place 2 Decimal places 3 Decimal places |
± 1.25mm per first 300mm ± .75mm per first 300mm ± .50mm per first 300mm |
| ± .001″ each additional inch up to 48 inches ± .002″ each additional inch over 48 inches |
± .025mm each additional 25mm up to 1200mm ± .050mm each additional 25mm over 1200mm |
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| Hole-to-Hole | ± .015”, first 6″ | Hole-to-Hole | ± .40mm first 150mm |
| ± .001″ each additional inch up to 48″ ± .002” each additional inch over 48″ |
± .025mm each additional 25mm up to 1250mm ± .05mm each additional 25mm up to 1250mm |
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| Hole diameter | ± .010″ up to .500″ | Hole diameter | ± .25mm up to 12.5mm |
| ± .001″ each additional .100″ | ± .025mm each additional 2.5mm | ||
Secondary Operations:Silk screening, labels block gluing, etc. |
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| US Units | Metric |
| ± .100″ for first 12″ from a trimmed or measurable tool surface ± .002″ each additional inch |
± 2.5mm for first 300mm from a trimmed or measurable tool surface |
| Note: These are Profile’s recommended standard tolerances for our thermoforming (vacuum, pressure and twin sheet) and CNC trimming operations. If there are specific features or dimensions that must be held to a tighter range then we can discuss possible alternatives to accomplish your specific needs. | |
Fabricated Part Tolerancing: |
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| Dimension | US Units | Dimension | Metric |
| 0 – 5.0″ | ± .010″ | 0 – 150mm | ± 0.25mm |
| 5.0” – 15.0″ | ± .020″ | 151 – 400mm | ± 0.5mm |
| 15.0” – 30.0″ | ± .040″ | 401 – 750mm | ± 1.00mm |
| 30.0” – 60.0″ | ± .060″ | 751 – 1500mm | ± 1.50mm |
| Over 60.0″ | add .001″ per inch | Over 1500mm | add .025mm per 25mm |
| Angles | ± 1° | Angles | ± 1° |
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Note: Sheet thickness is usually ± 10%, however starting thickness may vary depending on specific material selected. |
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