LumberJocks

Southern Yellow Pine Work Surface (workbench) #4: Glue Curing Box

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Blog entry by ruddhess posted 02-17-2015 09:19 PM 1484 reads 0 times favorited 5 comments Add to Favorites Watch
« Part 3: Glueing up pairs of boards and then glueing up quads Part 4 of Southern Yellow Pine Work Surface (workbench) series Part 5: Getting Close to Full Width »

Here is what I did yesterday: made a long box to keep the wood and glue warm while curing.

Everything I needed was laying close at hand – literally! I had four old closet doors that I used as shelves a long time ago that were standing in the corner. I had used a couple of them as a flat work place to start gluing up the boards for my slab. I found 8 little metal angle braces with screws that I had bought a while back and never used. It is 78” long (my 72” boards fit just right) and 12” X 15” otherwise.

I will cover the ends with some old blankets.

And I had a single bulb and bare fixture hanging right beside my shop light. It was 40°F in the shop when I put the thermometer inside and closed the ends up with blankets.

Everything hooked up and ready to go.

I found that with an extra blanket on the top, it will stay 60°F inside all night. Even with outside temps as low as 7°F like last night.

-- Rodney, Arkansas



5 comments so far

View benchbuilder's profile

benchbuilder

265 posts in 1911 days


#1 posted 02-18-2015 04:08 AM

Yes this works well, i did the same for a dog house but in place of blankets on the ends i used plywood with styrofom glued to it and on hinges with weather striping. Its amazing how much heat you can get with just one light blub. I used a 75 watt blub and have a happy dog. His water never frezzes as the temp stays about 58 to 65 degrees depending on outside weather, we to have had 4 degree nites and still a happy dog. You do have to keep a watch on the blub as they dont last but a few weeks being on full time..

View ruddhess's profile

ruddhess

117 posts in 671 days


#2 posted 02-18-2015 05:33 AM

benchbuilder,

I didn’t think of styrofoam until I saw a picture of someone else’s glue cabinet/closet here on LJ. I think a lot of people line them with the aluminum backed stuff too. If I used that stuff it would get much hotter in there I think. There were some fairly big cracks in it because I didn’t put but one screw in the middle and a couple of the doors were bowed a bit. But the extra blanket over the top took care of any heat that was escaping out the top. It is kind of amazing how much heat a bulb puts out. Sounds like your dog has some of the comforts of home in his house. That’s cool.

-- Rodney, Arkansas

View siavosh's profile

siavosh

674 posts in 1332 days


#3 posted 03-15-2015 03:24 AM

This process is new to me, does glue for the laminations need heat to cure?

-- http://woodspotting.com/ -- Discover the most interesting woodworking blogs from around the world

View daddywoofdawg's profile

daddywoofdawg

1010 posts in 1036 days


#4 posted 03-18-2015 09:59 PM

I think it’s Just so the glue doesn’t freeze.

View ruddhess's profile

ruddhess

117 posts in 671 days


#5 posted 03-19-2015 10:42 PM

siavosh,

If the ambient temperature falls below around 45°F (most glue labels say 60°), then it doesn’t cure properly. You can tell when the glue is going to fail (or is quite likely to fail) if the glue gets “chalky” – there appears a light colored powdery surface on the glue – that is a bad sign. I built the box to put long pieces of laminated lumber in to let the glue cure when the shop temps fell below around 47° or so – I didn’t experience any trouble at all when the temp was between 47° and 52°. Like ‘daddywoofdawg’ says, it’s important to keep the glue from freezing when it’s in the bottle. I’ve been bringing the glue bottles (and construction adhesive – AKA Liquid Nails) inside when the temps were falling to below 40°. And that worked out well enough.

-- Rodney, Arkansas

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