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Rewind bench: Difference between revisions
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→Best Practices
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* Having trouble getting a warped film to wind? Trying winding it over/over or under/under. Make sure it’s not rubbing against the side of the reel. | * Having trouble getting a warped film to wind? Trying winding it over/over or under/under. Make sure it’s not rubbing against the side of the reel. | ||
* Check for bent spindles. Can be straightened out by a machinist, or you can buy new ones. Bouncing can mean the bearings are going bad or you need to replace the pad. | * Check for bent spindles. Can be straightened out by a machinist, or you can buy new ones. Bouncing can mean the bearings are going bad or you need to replace the pad. | ||
* Speed - Slower is better. When inspecting film, you should be winding it slowly enough that you | * Speed - Slower is better. When inspecting film, you should be winding it slowly enough that when you stop winding after feeling damage, you don't have to rewind the film to find the damaged section. If you're overshooting, you're winding it too fast. | ||
* When using Kelmar tables, 20% motor power is typically appropriate for inspection, while 30% is appropriate for rewind. Do not exceed 40%. | * When using Kelmar tables, 20% motor power is typically appropriate for inspection, while 30% is appropriate for rewind. Do not exceed 40%. | ||
* Rewinding onto reels that are out of round/not true (slowly but surely…) | * Rewinding onto reels that are out of round/not true (slowly but surely…) | ||