iRubric: Machine Shop Exam Project rubric

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Machine Shop Exam Project

Used to grade Machining Projects in a Machine Tool Technology Course...

Rubric Code: E25X48B

By CMUtech2025

Ready to use

Public Rubric

Subject: Vocational

Type: Project

Grade Levels: Undergraduate

Machine Shop Skills
	Excellent 10 pts	Fair 6 pts	Poor 4 pts
.682 +/-.003 OD 10 % Dimensions	Excellent Dimension was inspected and was checked to be within the print size of a low of .679 and a high of .685	Fair Dimension was checked and was either .670/.678 or .686/.695	Poor Dimension was over .695 or under .670
2.350 +/-.005 Length 10 % Dimensions	Excellent Dimension was inspected and was checked to be within print size. The size is between a low of 2.345 and a high of 2.355	Fair Dimension was checked and was either 2.335/2.344 or 2.356/2.365	Poor Dimension was over 2.365 or under 2.335
.596+/-.005 10 % Dimensions	Excellent Dimension was inspected and was checked. The size is either between a low of ..591 or a high of .601	Fair .Dimension was checked and was either .584/.595 or .597/.605	Poor Dimension was over .605 or under .584
3.495+/-.005 10 % Dimensions	Excellent Dimension was inspected and was checked. The size is either between a low of 3.490 or a high of 3.500	Fair Dimension was checked and was either 3.485/3.489 or 3.501/3.505	Poor Dimension was over3.505 or under 3.485
3/8 -/- 1/64 10 % Dimensions	Excellent Within Spec 23/64 to 25/64	Fair Dimension was checked and was either less than 23/64 or more than 25/64	Poor Dimension was 1/32 lees or more than spec
.257 Drilled hole 1.50 and 5/16-18 1.0 +/-.01 Deep 10 % Dimensions	Excellent	Fair Dimension was checked and was either holes were too deep or too shallow	Poor
1.00 +/-.005 10 % Dimensions	Excellent Within spec .995/1.005	Fair Checked within a low of .98/.994 or a high of 1.006/1.02	Poor Dimension out of spec over or under 1.00 more than.03
Break Edges 10 %	Excellent Smooth no sharp edges	Fair Some Sharp edges	Poor Very Sharp edges
Apppearance 10 %	Excellent Smooth	Fair Rough	Poor Jagged edges
Safe Practices 100 %	Excellent Worn Every Day While Working on project	Fair Occasionally Worn	Poor Never Worn