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#1
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Steam Bending Plywood
Well I tried to bend 6mm plywood around my buck (As described in a
previous thread), and after steaming it for almost an hour, got absolutely no where. As I can not find 2mm or 3mm okoume any where locally, and shipping it seems pretty prohibitive ($50.00 packaging fee for one sheet???!!).... I have found a source for 1.5mm Finnish Baltic Birch 3 ply (AirCraft Grade) in 4' x 4' sheets. The supplier says it can be rolled and shipped via ups in a mailing tube.... so I guess it can be made to conform to my buck. Anyone aware of any reasons not to "cold mold" several layers of baltic birch ply? It will be epoxy, four layers of 1.5mm baltic birch glued with epoxy (I am hopping that the epoxy in between the birch will fill out the sandwich a little for a 9mm width) and a layer of 6oz fibre glass on the outside..... I can however buy 4mm 3 ply bs1088 okoume locally, but am wary of being able to bend it after steaming to my desired radius. comments appreciated. Kevin |
#3
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Steam Bending Plywood
Brian,
The problem with that is... well straight glass just won't match well with the overall wood based theme of the boat. I want the nice grain and wood color in the inside... and showing through the wetted out glass on the outside. Kevin Brian Whatcott wrote in message . .. I'm sure the laminated birch ply will work for you, but then you could go the whole hog with cloth, chopped strand and cloth for a piece that will last rather longer than any wood can hope for... Wrap a shiny plastic film overall while setting, for that gloss finish you would like.... Brian W |
#4
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Steam Bending Plywood
Perhaps a sheet of 1.5 mm on the inside; and another on the outside..and
glass all the way through??? That way you get the wood appearance, and the glass strength and longevity. Your materials can be "mailed in a tube" too. RichG |
#5
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Steam Bending Plywood
Are you sure you can't get 3mm baltic birch ply locally?
It seems to be very popular for making drawer bottoms. Cheap and strong too. I think 3mm should be flexible enough to cold mould the way you want. "Kevin" wrote in message om... Well I tried to bend 6mm plywood around my buck (As described in a previous thread), and after steaming it for almost an hour, got absolutely no where. As I can not find 2mm or 3mm okoume any where locally, and shipping it seems pretty prohibitive ($50.00 packaging fee for one sheet???!!).... I have found a source for 1.5mm Finnish Baltic Birch 3 ply (AirCraft Grade) in 4' x 4' sheets. The supplier says it can be rolled and shipped via ups in a mailing tube.... so I guess it can be made to conform to my buck. Anyone aware of any reasons not to "cold mold" several layers of baltic birch ply? It will be epoxy, four layers of 1.5mm baltic birch glued with epoxy (I am hopping that the epoxy in between the birch will fill out the sandwich a little for a 9mm width) and a layer of 6oz fibre glass on the outside..... I can however buy 4mm 3 ply bs1088 okoume locally, but am wary of being able to bend it after steaming to my desired radius. comments appreciated. Kevin |
#6
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Steam Bending Plywood
The problem with the local 3mm baltic birch that I have been able to
find is that it only has interior grade glue.... which I don't think will hold up. Kevin "Trent Hink" wrote in message ... Are you sure you can't get 3mm baltic birch ply locally? It seems to be very popular for making drawer bottoms. Cheap and strong too. I think 3mm should be flexible enough to cold mould the way you want. |
#7
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Steam Bending Plywood
Yes standard Baltic (actually Russian) birch is not even slightly water
resistant. Kevin wrote: The problem with the local 3mm baltic birch that I have been able to find is that it only has interior grade glue.... which I don't think will hold up. Kevin "Trent Hink" wrote in message ... Are you sure you can't get 3mm baltic birch ply locally? It seems to be very popular for making drawer bottoms. Cheap and strong too. I think 3mm should be flexible enough to cold mould the way you want. -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#8
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Steam Bending Plywood
Glenn Ashmore wrote in message news:DDZGb.11259$JD6.7487@lakeread04...
Yes standard Baltic (actually Russian) birch is not even slightly water resistant. Sure is nice for making scale models though Scotty Kevin wrote: The problem with the local 3mm baltic birch that I have been able to find is that it only has interior grade glue.... which I don't think will hold up. Kevin "Trent Hink" wrote in message ... Are you sure you can't get 3mm baltic birch ply locally? It seems to be very popular for making drawer bottoms. Cheap and strong too. I think 3mm should be flexible enough to cold mould the way you want. |
#9
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Steam Bending Plywood
It seems to hold up very well for these:
http://gallery.kiteforum.com/gallery/albup46 But I always thoroughly coat it with epoxy and sometimes vacuum bag a layer of glass on as well. Note the tortured shape, from 3 layers 3mm laminated with rocker and bottom concave. Nice springy "pop" like a snowboard. At 180lbs with frequent jumps to around 15', I haven't been able to break one or seen any signs of rot yet, even the ones where I ground through to to bare wood riding over sand and (sometimes) rocks. Then again this is not an application where the wood is submerged for much more than a few hours at a time. "Glenn Ashmore" wrote in message newsDZGb.11259$JD6.7487@lakeread04... Yes standard Baltic (actually Russian) birch is not even slightly water resistant. Kevin wrote: The problem with the local 3mm baltic birch that I have been able to find is that it only has interior grade glue.... which I don't think will hold up. Kevin "Trent Hink" wrote in message ... Are you sure you can't get 3mm baltic birch ply locally? It seems to be very popular for making drawer bottoms. Cheap and strong too. I think 3mm should be flexible enough to cold mould the way you want. -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
#10
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Steam Bending Plywood
Did so more searching and found sources localy for:
1- 3 Ply 3mm (1/8 inch) Italian Poplar called Bending Poplar 2- 3 Ply 2.7 mm meranti VC (What does the VC mean?) 3- 2 Ply 2.7 mm meranti 4- 3 Ply 2.7 mm meranti A-3 VC (I assume this is grading information... somoene want to decode it for me?) 5- 3 Ply 3mm Obeche Which would be my best option for my rounded driftboat transom, and what are the various strenghts and weaknesses of the above listed woods? Thanks in advance, Kevin |
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