Left Side Snipes | ||
Description | Probable Cause | How to Correct |
A snipe on the left side of a finished part created by the left side spindle and on the leading end of the part. | Not enough pressure on the LSH chipbreaker. | Increase the pressure on the left side chipbreaker. |
LSH guide too far away from the cutterhead. | Adjust the left side guide towards the cutterhead. Be certain the knives do not hit the guide. | |
Un-square ends of stock (usually only on short stock). | Adjust the chop saw to cut the ends square. | |
Holdover rolls not holding stock against the right side guides. | Adjust the infeed holdover rolls. | |
Left side guide outside the cutting circle. | Check the setting of the left side guide to the left side cutterhead with a straightedge. | |
Right side cutterhead not set to the right side guide. | Check the setting of the right cutterhead to the right side guide with a straightedge. | |
Bottom feedroll on the top roll shaft. | Serrations pull stock away from the right side guide. Replace rolls. | |
A snipe on the left side of a finished part created by the left side spindle and on the trailing end of the part. | Left side guide not holding the stock tight. | Check the setting of the left side guide to the left side cutterhead with a straightedge. |
Left side guide not parallel to the RS guide. | Realign the left side guide. | |
Right side guide not parallel to the referencing guide. | Realign the side guides. | |
Chipbreaker too far away from cutterhead knives. | Adjust the chipbreaker closer to the left side cutterhead. Do not permit the chipbreaker to hit the knives. | |
Chipbreaker un-square with bed. | Check the chipbreaker for sliver, wear or damage. Repair or replace. | |
Infeed guide not parallel with right side guide. | Realign the side guides. | |
A snipe on the left side of a finished part created by the left side spindle and on either or both end of the part. | Bowed stock. | Feed stock into the machine with the bowed edge against the infeed guide. |
A snipe from the right side can cause a snipe on the left side. | Fix the snipe on the right side first. | |
Both side of the stock are not held down by the feedrolls (usually only with wide material). | Space feedrolls out across the width of the material. | |
Slivers in the moulder. | Clean the machine. | |
Narrow stock. | When running narrow stock set the guides and chipbreakers as close to the cutterheads as possible with out hitting the knives. | |
Chipbreaker hitting the feedroll when running narrow material. | Remove a feedroll across from the chipbreaker. | |
