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Quality and Accuracy Standards

Quality and Accuracy Standards // Additive Plastic  

Standard Tolerances Per Process FDM Poly Jet MJF SLS SLA
Z Accuracy XY Accuracy Plus Additional Tolerance of -0.0001″ Slice Height +/- 0.2mm (.008″) or .002mm/mm (Whichever is Greater) +/- 0.5mm or 0.5% (Whichever is Greater) +/- 0.3mm or 0.3% (Whichever is Greater) +/- 0.2mm (.008″) or 0.02% (Whichever is Greater)
Standard Layer Thickness .25mm(0.010″) .03mm (.001″) .08mm (.003″) .12mm (.005″) .1mm (.004″)
XY Accuracy */- .127mm (.005in) or +/- .002 mm/mm (.002 in/in) (Whichever is Greater) +/- 0.2mm (.008″) or .002mm/mm (Whichever is Greater) +/- 0.3 mm (0.012″) on XY or -0.3% (Whichever is Greater) Note: Values Can Increase For Solid Runs With Wall Thickness Over 5mm +/- 0.3 mm (0.012″) or -0.3% (Whichever is Greater) Note: Values Can Increase For Solid Runs With Wall Thickness Over 5mm +/- 0.2mm (Whichever is Greater)
XY Resolution Typically 2x Layer Thickness But Highly Variable 600 dpi 1200 dpi Minimum Feature Size .75mm (.030″) Up TO 4000DPI Note: Spot Location Onlu Minimum Feature of 0.25mm (0.010″)

Quality and Accuracy Standards // CNC Machining  

Metal Optimal Quantity Tolerances (+/-) Advantages & Considerations Finish & Appearance
Stainless Steel 1 – 1000 +/- 0.005″ High Strength
High Corrosion Resistance
High Weldability
Standard Machined Finished
Tumbled
Polished
Bead Blasted (sand or glass)
Low Carbon Steel 1 – 1000 +/- 0.005″ Common Steel
High Machinability
High Weldability

Can Be Hardened
Not Corrosion Resistant
Aluminum 1 – 1000 +/- 0.005″ High Strength
Low Weight
High Machinability
Low Cost
Brass 1 – 1000 +/- 0.005″ Corrosion Resistant
Chemical Resistant
High Density
High Strength
Non-Conductive
Plastic Optimal Quantity Tolerances (+/-) Advantages & Considerations Finish & Appearance
HDPE 1 – 100 +/- 0.008″ Medium Impact Strength
Flexible (Shore D70)
FDA Compliant
No Water Absorption
Standard Machined Finish
Tumbled
Flame or Vapor Polished (Acrylic Only)
PC 1 – 100 +/- 0.008″ Medium Tensile
High Impact Strength
Maintains Properties Over Range of Temperatures
High Optical Clarity (Clear)
ABS 1 – 100 +/- 0.008″ Medium Tensile
High Impact Strength
Electrical Insulator
High Machinability
Low Cost
Acrylic 1 – 100 +/- 0.008″ High Tensile Strength
Can Be Polished for High Optical Clarity
Nylon 6/6 1 – 100 +/- 0.008″ High Tensile
Medium Impact Strength
Maintains Properties Over Range of Temperatures
Acetal
(Delrin #)
1 – 100 +/- 0.008″ Medium Tensile
Medium Impact Strength
Holds Machining Tolerances Well
Good Wear & Fatigue Resistance
ULTEM® 1 – 100 +/- 0.008″ High Tensile Strength
High Working Temperature Range (335°F)
Electrical Insulator
High Optical Clarity (Clear)

Quality and Accuracy Standards // Sheet Metal

All Tolerances Based on actual Capability Studies and Standard Material Variations

All Tolerances below apply PRIOR to Finish.

Single hit hole size: +/-.005”

Punched/Laser Feature to Punched /Laser Feature in same Plane: +/-.010”

Punched/Laser Feature to a Single Formed Feature: +/-.015”

Punched/Laser Feature to Punched/Laser Feature over 4 Formed Features: +/-.030”

Formed Feature to Formed Feature: +/-.020”

Formed Features over several Formed Features: +/-.020” PLUS +/-.005” for each additional Formed Feature

Basic Welded parts and components: +/-.030”

Contact Fathom for specific Tolerances related to complex Welded products.

Formed Angles Sharp to 3/32″ Inside Radius: +/- 1 degree

Formed Angles above 3/32″ to 3/16″ Inside Radius: +/- 1 1/2 degree

Formed Angels above 3/16″ to 3/4″ Inside Radius: +/- 2 degree

Formed Angles above 3/4″ Inside Radius: +/- 3 degree

For any Dimensions specified to “Apply after Finish”, Please contact Fathom for guidance on tolerances based on the chosen finish and materials.

Manufacturing Locations Across National Time Zones
Manufacturing Locations Across National Time Zones
The Fathom Advanced Manufacturing Platform
new map update 3
HEADQUARTERS

1050 Walnut Ridge Drive
Hartland, WI 53029
ISO 9001:2015
AS9100:2016
ITAR

ARIZONA

444 W. 21st St. Ste. 101
Tempe, AZ 85282
ISO 9001:2015
NIST800-171 Compliant
ITAR

COLORADO

7770 Washington St.
Denver, CO 80229
ISO 9001:2015
ITAR

MINNESOTA

13758 Johnson Street NE
Ham Lake, MN 55304

TEXAS

1801 Rowe Lane
Pflugerville, TX 78660
ISO 9001:2015
AS9100:2016

1513 Sam Bass Rd
Round Rock, TX 78681
ISO 9001:2015
ISO 13485:2016

CALIFORNIA

620 3rd Street
Oakland, CA 94607
ISO 9001:2015 Design Certified
NIST 800-171 Compliant
ITAR

FLORIDA

14000 N.W. 58th Court
Miami Lakes, FL 33014

NEW YORK

1920 Slaterville Rd
Ithaca, NY 14850
ITAR

401 W. Shore Blvd.
Newark, NY 14513
AS9100:2016
ISO 9001:2015
ITAR

ILLINOIS

1207 Adams Drive
McHenry, IL 60051
ISO 9001:2015

1401 Brummel Ave
Elk Grove, IL 60007
ISO 9001:2015 Design Certified

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