Speaking Of Jointing - Page 2 - Woodworking Talk - Woodworkers Forum
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post #21 of 32 Old 06-08-2012, 09:56 PM Thread Starter
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Gotcha - thought you were doing a glueup. So, skip steps 2 & 4, run the router along the straight edge taking off a 1/16' or so. Will be a straight as your straightedge.
What would you use for an 18' straight edge?





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post #22 of 32 Old 06-08-2012, 10:02 PM
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What would you use for an 18' straight edge?
If I had to come up with one, guess it would be an 18' length of flat iron bar stock- say 1-1/2 X 3/6". Clamp one end,set up a string (piano wire?) and make sure it's clamped on straight. Would be a pain in the butt to haul home, but if needed.........
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post #23 of 32 Old 06-09-2012, 01:51 PM
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Might be able to halflap some 1x4's end to end to get the length and then joint that into your straight edge.
In any case, would be interested in the solution you come up with.

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post #24 of 32 Old 06-09-2012, 06:08 PM
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Not the voice of experience here and shootin' from the hip here. If I were tasked with creating an 18' straight edge I would laminate 1x4 three across (best wood available), joint it on the longest bed jointer I had. I still think a laser (level) would offer the best reference over that distance so I would check it by lining the laser up just above either end. If there was a crown you would know it right away. Any other error could be detected by drawing a white card across the edge looking for high/low spots. Any found would be removed by a jointer hand plane.
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post #25 of 32 Old 06-09-2012, 06:19 PM
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Sorry, but I have to laugh at how complex this has gotten. Lasers!

While I'm sure that would work... How bout a chalk line?... You know a piece of twine coated with willow charcoal snapped along the edge.

If he were glueing them edge to edge, why not lay then side by side (touching) and pass a hand saw between the joint which will only cut where they are touching.... Do that a couple time pushing the boards back together each time until they are a good fit.

There is something to be said for primitive technology, ESPECIALLY when your available power tools are too small for the task at hand.

Just figured I'd make yawls wheels turn a bit...

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post #26 of 32 Old 06-09-2012, 06:58 PM
where's my table saw?
 
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Use a table saw

Quote:
Originally Posted by cabinetman View Post
This is about straight edging one edge.





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Use the straightest board, steel angle, 2 pieces of factory edged material and straight lined with a tight string, or whatever and fasten them to the planks. Then run that against an extended fence on the table saw.
Or make an extended fence for a large RAS like this:

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)

Last edited by woodnthings; 06-09-2012 at 10:12 PM.
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post #27 of 32 Old 06-09-2012, 07:15 PM
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Just figured I'd make yawls wheels turn a bit...
...and a little chain yanking? Don't you know laser is the new chalk?
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post #28 of 32 Old 06-09-2012, 07:51 PM
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Not the voice of experience here and shootin' from the hip here. If I were tasked with creating an 18' straight edge I would laminate 1x4 three across (best wood available), joint it on the longest bed jointer I had. I still think a laser (level) would offer the best reference over that distance so I would check it by lining the laser up just above either end. If there was a crown you would know it right away. Any other error could be detected by drawing a white card across the edge looking for high/low spots. Any found would be removed by a jointer hand plane.
I dunno, I've had a couple of the cheap (under $100) laser levels and I think the beam width on the ones I've had is to wide to be much good for anything terribly precise. Great for hanging pictures and leveling walls but using one as a straight edge reference, you need to get down to a couple of decimal points. JMHO

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post #29 of 32 Old 06-09-2012, 08:12 PM
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I've got it! A laser guided GPS oriented thin kerf rip chain chainsaw with an onboard gyroscope powered by high output long life Li-ion batteries!!! And of course what rig like that wouldn't come with a Harvard grad Geo-Scientologist and underwater basket weaving instructor to run you through all the controls prior to operating it.

Didn't you know that, Mike!? that's what ya really meant, right shopdad!?
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post #30 of 32 Old 06-09-2012, 10:16 PM Thread Starter
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I've got it! A laser guided GPS oriented thin kerf rip chain chainsaw with an onboard gyroscope powered by high output long life Li-ion batteries!!! And of course what rig like that wouldn't come with a Harvard grad Geo-Scientologist and underwater basket weaving instructor to run you through all the controls prior to operating it.

That sounds way too simple.





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post #31 of 32 Old 06-09-2012, 10:30 PM
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Hey, don't knock underwater basket weaving until you've tried it.
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post #32 of 32 Old 06-13-2012, 05:24 PM
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Came across this. I think the rip sled is a pretty clean way to handle.
http://owwm.org/viewtopic.php?f=5&t=111704
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