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>> Home > Forum > Building Related > Bending thin plywood
Bending thin plywood
(1083 views)
Author Message
Gardener
(Chief Petty Officer)





Forum Posts: 13
17th Sep 2018 13:21  
>> Permalink
mdlbt.com/46269

Hi.
what is the best way to bend thin ply 2.5mm to form a curved hatch cover ?
Thanks
Dave

Gardener
(Chief Petty Officer)





Forum Posts: 13
17th Sep 2018 13:34  
>> Permalink
mdlbt.com/46270

👍

Westquay
(Fleet Admiral!)





Forum Posts: 797
17th Sep 2018 19:07  
>> Permalink
mdlbt.com/46283

Gardener, I go out in the garden, where I have some large ex paint tins.

I soak the ply in the water butt, then wedge it against the inside of the tin with a stick of bamboo, until the sun has dried it. By then it's nicely curved and can be glued to your frame members, you made while it was drying, out of 3mm ply. Make sure the top really IS dry and then weight down the structure while the glue is setting thoroughly. I've just made a long section of deck/hatch for my Chris Craft version of a Sea Hornet that way.

Cheers,
Martin

mturpin013
(Fleet Admiral!)





Forum Posts: 69
17th Sep 2018 19:51  
>> Permalink
mdlbt.com/46284

Slightly more comfortable - The bending is done simply by soaking in hot water for 10 - 15 mins and then forming around a suitable paint tin/circular object and left a couple of days to dry. The skins must be absolutely dry before fitting as further drying out when glued to the bulkheads will twist the whole hull.

Gardener
(Chief Petty Officer)





Forum Posts: 13
17th Sep 2018 19:52  
>> Permalink
mdlbt.com/46285

👍

Westquay
(Fleet Admiral!)





Forum Posts: 797
17th Sep 2018 21:41  
>> Permalink
mdlbt.com/46288

I see no real difference. You go over, I go inside. Water is the really important thing and hot or cold makes no odds. As I've been doing this during this year's strong sun, the water in the ply gets hot anyway. I also only dip it in once and then slam it in the tin. I have never found the need to soak it for ages. Of course it won't hurt it, just not really necessary. 3" thick x 10" wide oak, however, needs up to 5 hours in a steam chest. And you get exactly 7 minutes before it goes rigid again. Ask me how I know

Gardener, what is that little square supposed to mean? I haven't even got one on my keyboard.

Martin

Gardener
(Chief Petty Officer)





Forum Posts: 13
17th Sep 2018 22:04  
>> Permalink
mdlbt.com/46289

Thanks
don’t know about green square.

mturpin013
(Fleet Admiral!)





Forum Posts: 69
18th Sep 2018 18:23  
>> Permalink
mdlbt.com/46303

What green square?👍

RNinMunich
(Fleet Admiral!)





Forum Posts: 2495
18th Sep 2018 19:23  
>> Permalink
mdlbt.com/46307

Hi Mike, Suspect that Martin's steam powered computer can't display the thumbs up, so it shows a default square instead. Where the 'green' came from I've no idea! Cheers, Doug 😎


Young at heart - slightly older in other places 😉 Cheers Doug
Westquay
(Fleet Admiral!)





Forum Posts: 797
18th Sep 2018 21:48  
>> Permalink
mdlbt.com/46318

Did I say it was green? I wondered what it meant as it appeared on its own. I don't do emoticons, I think they're corny.

My "steam" computer is the same as those in my Health centre's consultation rooms, but with a more usable graphics card.....he said like he'd know it from a hole in the arse!
I don't possess a mobile' phone, which is why you can usually understand what I type as no mad auto type thing is trying to take over as it does with Klevafones acting as computers.

Martin

Westquay
(Fleet Admiral!)





Forum Posts: 797
18th Sep 2018 21:50  
>> Permalink
mdlbt.com/46320

666 posts, but fear not, recent research has shown that the number was actually more likely 616, which is long gone.

Martin

mturpin013
(Fleet Admiral!)





Forum Posts: 69
19th Sep 2018 18:34  
>> Permalink
mdlbt.com/46355

Martin, what's the significance of 666 posts?

PS. I'm glad I don't use your health centre sounds as if they behind the times, are you sure your well?

RNinMunich
(Fleet Admiral!)





Forum Posts: 2495
19th Sep 2018 19:49  
>> Permalink
mdlbt.com/46357

That's what i was wondering Mike 😲


Young at heart - slightly older in other places 😉 Cheers Doug
Westquay
(Fleet Admiral!)





Forum Posts: 797
20th Sep 2018 11:14  
>> Permalink
mdlbt.com/46369

When I typed that, the little thing on the left said Forum posts: 666, but it no longer does, oddly.
People have this thing about the number.

And I would say the doctors use the machine that most reliably runs the NHS programme they all use. They have updated the appointments system (with no obvious improvements), but the normal medical files aspect always seems to work very well and they are very good at reminders, etc. compared with my last surgery.

Martin

terrymiff
(Chief Petty Officer)





Forum Posts: 10
21st Sep 2018 00:45  
>> Permalink
mdlbt.com/46392

If 666 is the number of the Beast, is 668 the neighbour of the Beast?

RNinMunich
(Fleet Admiral!)





Forum Posts: 2495
21st Sep 2018 01:22  
>> Permalink
mdlbt.com/46394

666 is the Devil's number! Draw your own conclusions folks 😁

Martin, every time you post something that number will increment,
Cheers, Doug 😎


Young at heart - slightly older in other places 😉 Cheers Doug
onetenor
(Fleet Admiral!)





Forum Posts: 463
21st Sep 2018 01:48  
>> Permalink
mdlbt.com/46395

A hair dryer/heat gun played on one side of the ply while bending it to the hot side. bend it a little more than needed and hold in that position or strap it in position round a tin till cool. Oh yes wear gloves to save your fingers.👍 Or get some flexi ply. it is made easily bendable in one direction. Can be rolled very tightly. used in cabinetry in kitchens etc for boxing in curves.👍

RNinMunich
(Fleet Admiral!)





Forum Posts: 2495
21st Sep 2018 02:06  
>> Permalink
mdlbt.com/46396

Hi Martin,
ALL Dumbphones and PCs (or better said the browser used on the PC) have these irritating auto correct / auto type functions. BUT they can always be switched OFF. Just look in the [Settings] of your web browser.
Cheers, Doug 😎


Young at heart - slightly older in other places 😉 Cheers Doug