LumberJocks

Planer knife calibration question

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Rink posted 05-24-2018 04:19 AM 353 views 0 times favorited 3 replies Add to Favorites Watch
View Rink's profile

Rink

66 posts in 241 days


05-24-2018 04:19 AM

My cutterhead (13” Jet planer) seems to be a few thousands of an inch higher than the table surface on one side than the other. I don’t see any easy way to fix that.

So, I’m thinking that I should align the knives to the table surface and not to the cutterhead. Does that sound right?

Or… if anyone knows how to align the cutterhead to the table I’d like to hear it!

David


3 replies so far

View Rink's profile

Rink

66 posts in 241 days


#1 posted 05-24-2018 04:39 PM

For anyone that is interested….

I called Jet and spoke to tech support about my JPM13. He gave me two options:

1 – Don’t worry about the .005” or so difference from one side to the other, and align the knives either to the cutterhead or to the table (he seemed to prefer alignment to the cutterhead).

2- Realign the table to the cutterhead. Underneath the table, I would loosen the sprocket holding the chain to the screw the raises and lowers the table, raise (or lower) one side, and then tighten the sprocket again.

I’m going to see how complicated #2 looks, and #1 is the fall back option.

David

View Holbs's profile

Holbs

2009 posts in 2233 days


#2 posted 05-24-2018 10:26 PM

it has been awhile since I did my 15” jet planer. Let’s see… 2 dial indicators to measure knife height relative to the cutter head. And then, 2 dial indicators to measure cutter head to table. 2 separate measurements. Heck, while you are at it, a 3rd measurement of the 2 feed rollers in the table.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

View Rink's profile

Rink

66 posts in 241 days


#3 posted 05-25-2018 03:59 AM

Thanks, Holbs. I actually worked on this tonight. I picked option #2 and it turned out to be easy, peasy. Well it was easy after I failed a couple of times. I got the cutterhead parallel to the table within a couple thousands of an inch. Close enough for me. Then I used a dial indicator sitting on the table to set the knives, also within a couple thousands of an inch. After I got it that close, my patience failed me. Now that I’ve used this method, I think it will go faster next time.

David

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com