This article is from the Woodworking FAQ Collection 3, by multiple authors.
From: rds@hpcndm.CND.HP.COM (Dwight Schettler)
Date: 7 Nov 90 16:39:06 GMT
I also have the Makita planer and have seen the problem you describe. I
believe your theory is correct but the solution is a bit off. I haven't been
able to eliminate the problem but I have minimized it.
You're right in that the trailing snipe occurs as the workpiece leaves the
infeed roller. The problem is that both rollers are needed to hold the piece
flat on the center table. As it leaves the infeed roller the piece is able to
pivot. The weight of the leading end of the board (beyond the outfeed table)
pushes down, the board pivots on the outfeed table which pushes the trailing
end into the cutter. The rollers are spring loaded but the outfeed isn't
strong enough to counter this pivot action by itself. Here is a crude drawing
of the scene.
I = infeed roller C = cutter O = outfeed roller = = workpiece ^ = possible pivot points I C O ======================================== ______________ ____________ ______________ Infeed table center table Outfeed table ^ ^