Oliver 4275C, Owner'S Manual

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36 | Page Oliver Machinery 4275C Jointer
Common Cutting Problems
Snipe
Occurs when too much pressure is applied as a workpiece enters or leaves
the cutterhead. Improper table settings can also introduce snipes.
To mitigate this problem, apply even feed pressure throughout the entire
workpiece. Once the workpiece went past the cutterhead, downward
pressure should be focused on the outfeed table only. Ensure the outfeed
table is not positioned way below the cutter head.
Chipping
Happens when cutting against the grain direction. For highly figured lumber,
and areas near a knot, some amount of chipping is normal. In this case,
reduce the depth of cut and feeding speed. Moistening the problematic area
before jointing can sometimes mitigate the issue.
Chipping can also cause by dirty or dull cutters. If chipping happens while
jointing straight grain stocks, inspect the cutter inserts and remove all resin
buildups. Rotate/replace dull cutter inserts.
Fuzzy Grain
Can happen when planing wood with high moisture content or if the cutter is dull. Sometimes it is
impossible to avoid fuzzy grain due to the nature of certain wood types. To mitigate this issue, avoid using
wood with high moisture content and use sharp cutters.