INVESTMENT CASTINGS
"Our Name Is Quality"
ISO9002 Certified / AS9000 Compliant
DESIGN PARAMETERS
Surface finish = 90 RMS
Wall thickness = .020 Minimum
Fillet Radii = .010 Minimum - Corner or edge Radii = .030 Maximum, Sharp at parting line.
Linear tolerance: +or- .004 minimum, +or- .003 inch per inch thereafter with a maximum of +or- .030 required.
Angles: +or- ½ degree.
No draft required.
Flatness: Up to 2” square = within .001 Total Indicator Reading
2”+ to 3” square = within .003
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3”+ to 6” square = within .005 6”+ to 10” square = within .008 10”+ to 15” square = within .015 15”+ and up square = within .025 Parallelism and Perpendicularity: Up to 2” cube = within .002 |
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4” cube = within .005 8” cube = within .010 12” cube = within .020 Holes and cores: +or- .002 inch per inch Holes through walls: |
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Four times the diameter of the hole = maximum wall thickness.
Blind holes
One and one half times the diameter of the hole = maximum depth. Blind holes to have maximum fillet at bottom of the hole, and .030 edge radii at entry.