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Be sure to always apply grease to the grease points on your saw after every full day of use.
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Our Dry Vacuum Hole Saw is great for use in environments like hospitals, where little or no dust is required.
• The DVH bit has a 1.250-12 thread and must be used with the dry vacuum swivel - Part # - 4400125
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If you are developing segment cracks, you are using a bond too hard for the material being cut.
• Purchase a softer bond
• Ease up on the feed pressure
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When core drilling, if the core becomes stuck in the bit, remove the core bit from the motor and push a steel rod through to release the core.
• Or purchase a core catcher - Part # - 4400327
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Is the water you are using for keeping your bit cool freezing in the cold weather?
• Add polyethylene polyglycol in the water tank.
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Saw slows down in the cut?
• Check RPM settings compared to blade.
• Saw may need tuned up.
• Belts may need adjusted.
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Blade wobbles?
• Check the blade flange and tighten flange nut.
• Some blades can be knocked out of tension if thrown or dropped.  Loss of tension can result in blades that wobble.
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Do you have a new walk behind blade and don't see the drive pin hole?
• Flip the blade over and you will find it under the blade label.
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Proper core rig alignment is necessary for good bit life.  This means the rig must be properly anchored.
• A core rig can be anchored with concrete anchors, vacuum pump or a ceiling jack.
• STANDING ON THE RIG IS DANGEROUS AND NOT ACCEPTABLE!
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When wet core drilling, the right amount of water is very important.  Too much or too little water can affect drilling.
• As you are drilling, the water and slurry mixture coming out of the hole should look like heavily-creamed coffee.
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If a blade stops cutting and looks 'glazed' over, it may be too hard for the material being cut.
• Try using a softer bond specification to solve the problem.
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When trying to determine what bond to use follow these guidelines.
• Use something hard to cut something soft, use something soft to cut something hard
• Start in the middle, then adjust
• Never say no.  Diamond Products offers customized bonds for almost any application.
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