| Out-of-Round Work When Plunge Grinding |
Work piece center holes out of round or not in line |
Relap center holes |
| Burrs in work piece center holes |
Clean holes |
| Work loose on centers |
Be sure footstock and headstock are clamped |
| Centers loose |
Tighten and clean centers |
| Center holes do not fit spindles |
Replace and clean centers |
| Center goles out-of-round |
Regrind center holes |
| Work piece center holes not deep enough |
Deepen holes or blunt center points slightly |
| Work centers scored |
Regrind centers and lubricate |
| Center points worn down |
Regrind centers |
| Work too tight on centers |
Loosen footstock spring tension |
| Insufficient coolant |
Readjust coolant flow |
