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Wetting plywood for bending???

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Old 10-12-2010, 12:39 PM
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NCIS
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Default Wetting plywood for bending???

Does it effect the glue in the laminations to wet it for a little while in hot water to make it bend easier??? I am talking about Sig 1/32" Plywood for wing saddle liners. I want to wet it and then tape it in place set the wing with weights on them and let it dry overnight.

Barry
Old 10-12-2010, 01:08 PM
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Default RE: Wetting plywood for bending???

No.
Old 10-12-2010, 01:28 PM
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Default RE: Wetting plywood for bending???

Maybe try alcohol. Also, just wetting one side results in good bending as well. If you have problems, try a couple of laminations of 1/64" ply also.
Old 10-12-2010, 02:07 PM
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Default RE: Wetting plywood for bending???

you could also try steaming it over a boiling kettle
Old 10-12-2010, 02:39 PM
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Default RE: Wetting plywood for bending???

I use a 50 50 mixture of water and ammonia on one side only to bend all my wood. Good Luck, Dave
Old 10-12-2010, 03:51 PM
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Default RE: Wetting plywood for bending???


ORIGINAL: vertical grimmace

Maybe try alcohol. Also, just wetting one side results in good bending as well. If you have problems, try a couple of laminations of 1/64'' ply also.
I thought of that but I would have to wait to get the ply. Our hobby shop here is a joke. Plus Hobbytown USA is rediculous on their plywood pricing. At least in Rockford IL. anyway!!! I don't want to wait for BUSA or pay their $10.00 shipping charge on one sheet of plywood.

Barry
Old 10-12-2010, 03:55 PM
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Default RE: Wetting plywood for bending???

Our Michaels craft store here sells Midwest balsa and plywood. Maybe your local store or other craft store can supply you wiith your wood?

Regards,

Richard
Old 10-12-2010, 04:34 PM
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NCIS
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Default RE: Wetting plywood for bending???

I didn't even think of them. We also have a Hobby Lobby plus a Michaels. I don't need 48" so that would work. I've got 48" on my mind because ebverything else has to be long. Thanks man you great!!!

Barry
Old 10-12-2010, 07:47 PM
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Default RE: Wetting plywood for bending???

Alcohol! Works great.
Tom
Old 10-12-2010, 08:05 PM
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Default RE: Wetting plywood for bending???

Yea, couple of stiff drinks and you will be able to bend it dry

Terry
Old 10-12-2010, 08:30 PM
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prop wash
 
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Default RE: Wetting plywood for bending???

You got that right red back.
Tom
Old 10-13-2010, 03:14 PM
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Default RE: Wetting plywood for bending???


ORIGINAL: NCIS

I didn't even think of them. We also have a Hobby Lobby plus a Michaels. I don't need 48'' so that would work. I've got 48'' on my mind because ebverything else has to be long. Thanks man you great!!!

Barry
Michaels and HobbyLobby carry craft quality ply, the nice aircraft ply that Midwest has is much harder to find. I'm happy using the craft grade. What's more, about every other week both Michaels and Hobby Lobby have 40% off coupons for one item. I usually buy a piece or two of ply or balsa with the coupons to keep my stock up.

The best quality wood I've bought has come from either a mom'n'pop hobby store (NOT Hobbytown!) or from a supplier. Many let you order online.
Old 10-13-2010, 04:46 PM
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Default RE: Wetting plywood for bending???

I just ran them under scolding hot water for 5 minutes where they curve the most and just a couple minutes for the rest. I taped them in place while they were wet and waited for them to dry. I removed the tape and they were shaped perfectly. I glued and used a bunch of frog tape to hold them tight while my carpenters glue dries overnight. There done! Here they are:

Barry
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Old 10-13-2010, 05:47 PM
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Default RE: Wetting plywood for bending???


ORIGINAL: DavidAgar

I use a 50 50 mixture of water and ammonia on one side only to bend all my wood. Good Luck, Dave

this is without doubt, the best way to perform this act, i used to use about 25%water though, make your self up a simple plastic bag, seal the bottom with tape, drop in the sheet, drop in the ammonia mix, seal the bag, leave for a few hours, withdraw from bag, you will be able to tie knots with the play!!! put it in place, glue, tape, and it will go back yo its original hardenss, with no detremnent to the laminating bond, this method is also good for stick bending, at a demo i attended years ago, whn i found out about this method, the guy had several strips of balsa, and harwood, they where tied in knots!! most enterprisng,
Old 10-13-2010, 06:03 PM
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Default RE: Wetting plywood for bending???

Try this...........http://www.aircraftspruce.com/menus/wp/index.html

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