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<p>I was thinking more of after it was out of the clamps - i did 4
panels once - glued them all up, the next day i pulled them out of
the clamps and stacked them on top of each other - the top one
cupped like hell, the 2nd a little less, etc... because i had no
airflow on one of the faces.<br>
</p>
<pre class="moz-signature" cols="72">Jason Beam
Sacramento, CA</pre>
<div class="moz-cite-prefix">On 12/17/2017 5:07 PM, Chuck Steger via
Woodworkers wrote:<br>
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<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">Jason,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">
No, I glued it up flat on the bench. I know what you mean,
normally I glue panels on my Bessey clamps so they are
elevated. In this case I offset the boards by 2”
(alternating boards – picket fence style) so I cut two 3/8”
dados (top and bottom of boards) for a 3/8” cleat that ran
across the back to keep it aligned. Honestly, I also thought
that would help keep it flat. So when I glued it, I did it
face down on the bench so I could ensure the cleats were
seated in the dados. Interestingly enough, the panel was
flat coming out of the clamps and all day that day. It was
flat when I left the shop that night.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">Gary,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">
Yes, I have a joiner and planer so my first milling was to 1
¼” and sit a day, then >7/8” and sit a day, and then
final ¾”. But your point is well taken, I should have
purchased them much earlier. The irony is I have some 2x4’s
and a 2x10 in my shop that had been there for a while. I
keep cheap wood like that to make prototypes. I knew I had
them but I thought I would just go buy new and keep what I
had. Lesson learned! In fact. I may go buy more to have in
the shop just for occasions like this (my daughter and her
family lean to the rustic). I did not alternate grain but I
did use cauls. Thanks for the offer to call. I may still do
it!<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">
I ended up spending the day trying to rescue what I had. The
one panel made of 1x4’s is twisted and can’t be fixed. But
the one I made out of milled 2x4’s had a cup in the center.
Quite frankly, if the convex part of the cup was on the show
side. I probably would have called it good. That would have
put the sides flat against the wall and stable but if you
looked from the top or bottom, you would see a gap in the
middle. No one would see if from top or bottom (much) so I
would have settled. However, the convex side was on the back
so the middle of the panel would hit the wall first and it
would have been wobbly. Given my time crunch, I decided to
try to take the cup out using a jointer plane, finish plane,
and a belt sander. I know that would have made the middle
boards thinner than the end boards, but against a wall, who
would notice. I was not successful doing that. So I decided
to cut the panel in 2 (which cut my cleats also but now I
only had to align 2 panels, not 9 boards), plane it flat,
and re-glue. This kind of worked. The problem was the planer
pushed the panels flat so they were still not totally flat.
So then I had this idea to use the TS as a jointer. In other
words, If I hold then end of the ½ panel flat against the
TS, it elevates the cut end a little (1/8”). I then did the
same to the other ½ panel. In effect, what this did was when
I glued both panels back together, the ends stayed flat to
the table and the joint closed with no gaps. If you look
under the panel, you see the ends fat on the table and the
middle raised by about ¼”. I will find out tomorrow if this
worked. I hate to even admit I’m doing it that way and with
more time, I would remake from scratch with all of your
suggestions. But, alas, time is not my friend. If I get the
panel to look flat against the wall and not rock, I am going
to call that success! Stay tuned.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D">
</span><span style="font-size:20.0pt;font-family:"Brush
Script MT";color:#1F497D">Chuck<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in
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1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
Woodworkers
[<a class="moz-txt-link-freetext" href="mailto:woodworkers-bounces@lists.sawdusters.org">mailto:woodworkers-bounces@lists.sawdusters.org</a>] <b>On
Behalf Of </b>Jason Beam via Woodworkers<br>
<b>Sent:</b> Sunday, December 17, 2017 6:08 PM<br>
<b>To:</b> Chuck Steger via Woodworkers<br>
<b>Cc:</b> Jason Beam<br>
<b>Subject:</b> Re: [Woodworkers] Christmas present
help needed!!<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Did you leave the flat panel on a solid surface without
equal airflow on both large faces?<o:p></o:p></p>
<p>I did that once to some cherry panels - and got me a
Pringle the next day<o:p></o:p></p>
<pre>Jason Beam<o:p></o:p></pre>
<pre>Sacramento, CA<o:p></o:p></pre>
<div>
<p class="MsoNormal">On 12/17/2017 11:13 AM, Chuck Steger
via Woodworkers wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">A
little long but please read as I need help!</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">I’m
making a photo board for my granddaughter (believe it or
not they are actually printing pictures and the Polaroid
is making a comeback). She likes rustic so I was going
to make it out of pine (knots and all) and put a barn
wood finish on it. Since it was going to be rustic, I
figured I could skip a milling step and purchase 1x4
boards at Lowe’s. Most were badly warped but I found 3 -
10’ boards that were relatively straight. I thought that
since they acclimated in the store, they should be good
to go. Plus I was going to chop up into 2’ lengths so I
could manage the warp. I set them aside in my climate
controlled shop and went to finish the concrete truck
for my grandson. When I went to retrieve the boards,
they had warped badly. I knew better but I used them
thinking I could force them straight at glue up. When I
went to clamp them up, my heart-of-hearts knew it wasn’t
going to work because they were warping at glue up. I
had gone this far so I glued up, clamped down to a flat
work bench and hoped for the best. Sure enough, when I
removed the clamps, the panel was badly warped
(unfortunately, I was not surprised).</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">I
realized I should have done what I planned to do in the
first place and go get 2x4’s so I could mill the warp
out. I got pretty straight 2x4’s and chopped into 2’
sections and ,milled down to 1 ¼”. I stickered on my
bench and let acclimate to shop for a day. Encouraging
because as you looked at the stickered stack, they did
not appear to be warping at all. So next day I milled
down to just under 7/8” and stickered again overnight.
Again stack looked good so I milled to final thickness
of ¾’. As I was gluing up, I was very encouraged as the
glue up was flat. No need to clamp to bench (I did
anyway) but was very encouraged. Yesterday morning I
unclamped and held my breath but, hooray, a flat panel.
I sanded panel to remove glue marks and set aside to
practice texturing sample boards for the barn wood
finish (still nice and flat). This morning, I went into
the shop and the panel was warped!! As I write this, I
clamped the board flat to my bench and started to bring
the temperature up in my shop. If I’m not working on
anything, when I leave the shop for the night, I hold
temp to 50 degrees but if I’m working on something, I
hold temp to 61. Why 61? Because I bring up temp in 3
degree increments to get to 70. Why 3 degrees? I don’t
know, I just do.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">So
I have questions: What happened? Is it the temperature
fluctuations (and does 9 degrees really make a
difference in warping)? But most importantly, what do I
do now? I have less than a week to finish. I could do
again with new 2x4’s but I’m not comfortable I wouldn’t
have the same issue. As I send this I’m going back out
to unclamp from the bench but I don’t expect it to stay
flat.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif""> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:20.0pt;font-family:"Brush Script
MT"">Chuck</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman","serif""><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>I want to be one of my friends for a day so I can see how cool it is to hang out with me.<o:p></o:p></pre>
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<pre wrap="">_______________________________________________
I want to be one of my friends for a day so I can see how cool it is to hang out with me.
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