Hello!
I just set up my new 8″ Jet jointer. It works great except when surfacing a wide board I notice it leaves several “stripes” , 1/2″to1″wide and microscopically higher than the rest of the surface. It happens everytime…in the same place. A couple of strokes with the scraper takes care of the problem, but does anyone know what causes this in the first place? I carefully examined the knives and bed…everything seems fine..straight, square and true……….thanks for some advice!…..cheers! mark
Replies
Had the same thing on a 6" I don’t know what it is. I took a pice of steel wool a few stroks on the cutter head took care of the problem.
Its vibration that is causing the stripes. It is not uncommon in smaller jointers. Its really pretty minor unless it gets really bad. A ROS will fix it in a few swipes.
'twere it mine, I'd not accept it as normal. My 6" Jet surfaces perfectly (or did until I got a couple teeny, tiny nicks in the blades). If it is vibration, per "no one", it might be coming mostly from the belt and either work out in awhile, or you could replace the belt with a link belt. If you don't get any dead-on answers this weekend from Knots, best to call Jet and ask one of their techs.
forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl ;-)
Ah.. misread the problem. I would suspect a nick or a dirty blade also rather than vibration. If the stripes were horizontal then vibration or feed speed could be the culprit. Thats not likey in a case where the ridges (stripes) are vertical along the length rather than width.
These stripes are pretty wide -- I'd be surprised if they were from a nick. The whole thing seems very mysterious to me. Fred's experience, with the steel wool cleaning of the cutterhead, only makes it more mysterious.
forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl ;-)
Edited 11/3/2002 11:59:47 AM ET by forest_girl
Perhaps one of the blades has a small burr and this is making the extra cut or rub?
He says the "stripes" are microscopically higher than the rest of the stock. That would be as if there were a 1/2" wide, microscopically high, "nick" in the blade. Still mysterious.forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl ;-)
hello...
Thanks to everyone who tried to help with this problem........turns out that there was a defect in one of the knives which, naturally, was set a smidgen higher than the rest. The Jet techs, as usual,were terrific in their diagnosis and willingness to replace the parts without even being asked to do so. Great service...I sure hope it lasts with the Wilton merger..................cheers, mark
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