Jointing oversized wood

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Forum topic by Milo posted 08-20-2010 02:12 PM 1891 views 0 times favorited 10 replies Add to Favorites Watch
View Milo's profile


869 posts in 3859 days

08-20-2010 02:12 PM

Topic tags/keywords: jig question

I’m looking for some advice on jointing and planing over sized wood. I’ve got 12 inch boards and a 6 in jointer. I’d appreciate any ideas you have.



-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

10 replies so far

View rhett's profile


743 posts in 4207 days

#1 posted 08-20-2010 02:17 PM

You can make a planer sled, should be plans for one on this site. I also remember seeing an ingenious router jig by a member, GaryK, that addresses this exact problem.

-- Doubt kills more dreams than failure.

View Bill Davis's profile

Bill Davis

226 posts in 4464 days

#2 posted 08-20-2010 02:21 PM

Take them to a shop that has appropriately sized tools for te job. Or get a good hand plane.

View rhett's profile


743 posts in 4207 days

#3 posted 08-20-2010 02:24 PM

-- Doubt kills more dreams than failure.

View richgreer's profile


4541 posts in 3615 days

#4 posted 08-20-2010 02:29 PM

You can probably get one side very close to flat with a hand planer, either manual or powered. Then run it through your power planer (if you have one) with the almost flat side down to make it perfectly flat on the other side. Then flip it and make the almost flat side perfectly flat.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View uffitze's profile


199 posts in 3495 days

#5 posted 08-20-2010 04:01 PM

hand plane

View Domer's profile


252 posts in 3906 days

#6 posted 08-20-2010 05:29 PM

If you have a good fence and blade, you can joint on the table saw. That is what I did until I bought a jointer a year or so ago.

Others tell me that you can joint on the router table or with a router on a straight edge.

I have seen on line and in books where people build a sled to plane over sized wood with a router attached to the sled. It would get it pretty close and then they either hand planed or sanded the marks out.

I have not done a great deal with hand planes but that is how people did it for thousands of years.


View PurpLev's profile


8552 posts in 4189 days

#7 posted 08-20-2010 05:39 PM

Milo – you can joint only 6” of that wide board. so you’d have half a board surfaced flat – then double stick that to a flat strip of 6” plywood or other flat board, and run that through your planes to get the top flat and parallel. then take the double stuck board off, flip your wide board on it’s now 12” flat surface, and using your planer, finish it off on the 1/2 jointed face to fully thickness and flatten it.

joint edge, and call it a day ;)

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Scott Bryan's profile

Scott Bryan

27250 posts in 4362 days

#8 posted 08-20-2010 05:58 PM

Another idea that has not been mentioned is rip the board to 6”, joint them and glue them back together if you need boards this width. I prefer to work with boards 6” or less anyway to minimize the potential for cupping.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View Milo's profile


869 posts in 3859 days

#9 posted 08-21-2010 04:51 AM


Not exactly sure what you mean by doublestick. Do you using sacrificial sticks on the edges of the board?

Scott, interesting idea… I’ll have to remember that.

Domer, I meant jointing the flats, not the edge.

Thank you all for the great suggestions. I really want to flatten these 12” boards, and I appreciate the help.


-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

View Hallagan's profile


3 posts in 3375 days

#10 posted 08-23-2010 01:56 PM

I think a router sled will make quick work of it. It’s alot easier end more acurate than muscling a big board threw a jointer. Good luck

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