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Post by JohnV on Mar 3, 2017 8:47:51 GMT
This is mostly idle curiosity but I came across this material the other day and it intrigued me.
It's a plywood, coated with a smooth phenolic surface designed for use for making concrete shuttering moulds. (the laminates are glued with phenolic resin as well) I seem to recall that is one of the glues used in WBP and Marine ply construction
I spotted it in a sheet material supplier and have been wondering about possible boat related uses.
The price seemed attractive ( £13.50 inc vat for an 8 x 4 sheet of 18mm)
For it's design use it must have directional stability and extreme water resistance and they are quoting quite a long service life (10 to 12 uses)
Just wondered if anyone here has knowledge of the stuff
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Post by Deleted on Mar 3, 2017 9:26:46 GMT
Had a quick google, it would seem to be useful for battery boxes on leaky cruiser stern narrow boats!
The lack of grip like open mesh buffalo type board would make it less good for decks etc.
I always edge any ply I use to stop it delaminating - a time consuming job that these sort of plys would hopefully eliminate.
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Post by JohnV on Mar 3, 2017 10:42:54 GMT
As I said, I thought it looked interesting ....... I always try and keep my eyes open for new (to me at least) materials that might be useful.
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Post by Deleted on Mar 3, 2017 11:29:11 GMT
Does look interesting yes.
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Post by airedaleman on Mar 3, 2017 12:15:34 GMT
There are a lot of this type of board about. The original and still the best is Swedish called Wysaform, maybe wrong spelling, we used it for mound making in my previous life as a precast concrete manufacturer. You can see the quality by looking at the laminates the Scandinavian ones has many layers of white wood whilst the far eastern is made of fewer layers of brown wood and has nowhere near the life if exposed to weather.
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Post by JohnV on Mar 3, 2017 13:37:30 GMT
There are a lot of this type of board about. The original and still the best is Swedish called Wysaform, maybe wrong spelling, we used it for mound making in my previous life as a precast concrete manufacturer. You can see the quality by looking at the laminates the Scandinavian ones has many layers of white wood whilst the far eastern is made of fewer layers of brown wood and has nowhere near the life if exposed to weather. Thanks for that ..... You come across all sorts of specialist materials but if you haven't used them and don't know anyone who has, it is always a gamble trying them out.
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Post by bodger on Mar 3, 2017 15:05:32 GMT
We always used 3/4" phenolic faced plywood for formwork in the construction industry when I was still in the business, it is the bee's knees and the dog's bollox. I would use it for any purpose where strength and longevity are important. Of course the phenolic facing probably won't be compatible with epoxy resin glues. It won't replace genuine Lloyds certified marine ply for building boat hulls, and is far too heavy for most uses, and is not any cheaper. If I was building a deck structure on a heavy workboat I might consider it. It is similar to Hexagrip or Buffalo board which I used for a bonded-in deck (sole) in a yogurt pot, and to make bulkheads.
If you do use it, sand the cut edges and the original factory edges well and coat with at least 3 coats of epoxy resin.
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Post by Deleted on Mar 3, 2017 19:02:24 GMT
We always used 3/4" phenolic faced plywood for formwork in the construction industry when I was still in the business, it is the bee's knees and the dog's bollox. I would use it for any purpose where strength and longevity are important. Of course the phenolic facing probably won't be compatible with epoxy resin glues. It won't replace genuine Lloyds certified marine ply for building boat hulls, and is far too heavy for most uses, and is not any cheaper. If I was building a deck structure on a heavy workboat I might consider it. It is similar to Hexagrip or Buffalo board which I used for a bonded-in deck (sole) in a yogurt pot, and to make bulkheads. If you do use it, sand the cut edges and the original factory edges well and coat with at least 3 coats of epoxy resin. 18mm phenolic ply is much much more than £13.50 a sheet. I wonder if the board Johnv refers to has limited load bearing capability. One of my boats has a rear deck with an engine cover which was originally phenolic ply. The gap is 2ftx4ft with a central support so effectively 2 parts of 2x2. If you jumped on that i wonder if the board in the OP would handle the load? Hexagrip does. Math edit
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Post by JohnV on Mar 3, 2017 19:10:00 GMT
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Post by JohnV on Mar 3, 2017 19:19:41 GMT
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Post by JohnV on Mar 3, 2017 19:32:00 GMT
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Post by bodger on Mar 3, 2017 20:55:48 GMT
We always used 3/4" phenolic faced plywood for formwork in the construction industry when I was still in the business, it is the bee's knees and the dog's bollox. I would use it for any purpose where strength and longevity are important. Of course the phenolic facing probably won't be compatible with epoxy resin glues. It won't replace genuine Lloyds certified marine ply for building boat hulls, and is far too heavy for most uses, and is not any cheaper. If I was building a deck structure on a heavy workboat I might consider it. It is similar to Hexagrip or Buffalo board which I used for a bonded-in deck (sole) in a yogurt pot, and to make bulkheads. If you do use it, sand the cut edges and the original factory edges well and coat with at least 3 coats of epoxy resin. 18mm phenolic ply is much much more than £13.50 a sheet. I wonder if the board Johnv refers to has limited load bearing capability. One of my boats has a rear deck with an engine cover which was originally phenolic ply. The gap is 2ftx4ft with a central support so effectively 2 parts of 2x2. If you jumped on that i wonder if the board in the OP would handle the load? Hexagrip does. Math edit the only price I can find for Tulsaform is £64 a sheet, which is much more realistic. The OP should check - the price he quoted is for a sheet 2ft x 1ft.
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Post by JohnV on Mar 3, 2017 21:47:13 GMT
18mm phenolic ply is much much more than £13.50 a sheet. I wonder if the board Johnv refers to has limited load bearing capability. One of my boats has a rear deck with an engine cover which was originally phenolic ply. The gap is 2ftx4ft with a central support so effectively 2 parts of 2x2. If you jumped on that i wonder if the board in the OP would handle the load? Hexagrip does. Math edit the only price I can find for Tulsaform is £64 a sheet, which is much more realistic. The OP should check - the price he quoted is for a sheet 2ft x 1ft. My apologies I just saw the headline price under the first picture ...... I didn't click on it so the added info that it was for a 2 x 1 didn't pop up Whoops I wos mistook
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Post by bargemast on Mar 5, 2017 9:47:42 GMT
If a price looks to good to be true, look twice, and if it's still the same price then, have some serious daubts about the quality.
They never give good stuff away for a price a lot lower than comparable stuff.
Peter.
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Post by JohnV on Mar 5, 2017 11:35:51 GMT
actually their prices are not bad (even after Bodger pointed out I was reading the wrong bit and they weren't that cheap)
£56.96 inc vat for an 8 x 4 18mm phenolic antislip
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