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Reply by Jeff Heath

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Posted on Powermatic 15HH Snipe on both ends

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Jeff Heath

107 posts in 3669 days


#1 posted 03-04-2019 04:44 PM

Eliminating snipe is easily done on a quality industrial planer by going through the settings of various components of the machine. Infeed and outfeed table adjustments really don’t have anything to do with setting up a machine correctly, although raising the outfeed table can sometimes account for eliminating snipe in some conditions, as it masks the real issue causing the problem, which can be improperly set bed rollers.

If your machine is asian made, I am personally not sure of whether or not you can make the necessary adjustments. On American made Powermatic planers (vintage), these settings, and the procedure to set them all correctly, is clearly written in their maintenance schedule. Here’s a link to a copy of the maintenance schedule for my planer, which is a Powermatic 221D 20” planer.

http://www.vintagemachinery.org/pubs/detail.aspx?id=19979

If you read through it, you will see that there are settings for your infeed and outfeed rollers (top rollers, before and after the cutterhead), as well as the pressure bar. Typically, a setting of these at 1/32”, or .03125, below the cutting arc of your cutterhead, will be sufficient for proper feeding and pressure.

Your bed rollers are needed to be set properly, also, and are usually the number one cause for snipe. For finishing planing, you’ll want your bed rollers set around .008” above the bed, and for roughing planer settings, around .040”. My Powermatic has a quick adjustment setting that allows me to switch back and forth from these settings with the movement of a handle. I doubt your asian machine has this feature, so it would be best to set them at .008”, or a little more, and play with the setting until you find the “sweet spot” for your machine.

For instance, the settings for my 20” Powermatic, a finishing planer, are quite different than the settings for my 30” Whitney planer, which is a much heavier machine, capable of removing 3/16” in one pass, with segmented, spring loaded infeed rollers.

Your pressure bar also needs to be set, if possible. Typically, set it the same as the infeed and outfeed rollers, around .03125” (or just around 30 thou).

Once you get a feel for changing these settings on your machine, if possible, you will quickly learn to adjust these settings, up or down, for the type of work you’re doing.

Hope this helps. I’m honestly not sure if your machine is adjustable in this way. I don’t own any asian machines.

-- Jeff Heath


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