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Poly-C, Eze Kote or Ronseal Diamond Hard?

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Dave Hopkin03/02/2015 23:51:03
3672 forum posts
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Poly C - £10.20 for 500ml = £22.40 Litre

Eze Kote - £15.00 for 500ml = £30 Litre

Ronseal Diamond Hard Floor Varnish - £39.99 for 2.5 Litre = £16.00 Litre

The question is:

Is there a difference?

Ronseal is water based, doesnt attack foam, bonds glass down and fills the weave, looks the same, no odour in particular

Richard Wood04/02/2015 08:22:05
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1094 forum posts
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Hi Dave, I do use Poly-C regularly & one thing I wouldn't call it is 'Diamond Hard'.
It's great for our purposes though, easy to use, tough, smells ok & sands easily
to a smooth flat finish.
Eze Kote & Ronseal probably ok as well but haven't felt the need to try 'em.

Dave Hopkin04/02/2015 08:50:20
3672 forum posts
294 photos

Hi Richard,

I have used Poly-C and Eze Kote - and have done a couple of scrap pieces of Ronseal "Diamond Hard"

I actually cant see a difference between them - I am wondering if Poly-C and Eze Kote are actually the same chemical composition and just far more expensive because its packaged for modelling....

But if they are just a repackaged product, then there is a significant cost saving to be made

The Wright Stuff04/02/2015 09:13:30
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1381 forum posts
226 photos

I agree that the key question is whether it can be sanded smooth. Have you tested this, Dave?

If the Ronseal is sandable, then it's evidently significantly less hard than diamond. Either that, or you have some very special sandpaper!

Probably being flippant now, but is this not a breach of the Trades Description Act?

Dave Hopkin04/02/2015 09:16:38
3672 forum posts
294 photos

Can I point out that "Diamond Hard" is Ronseals trade name..... and yes it does sand just the same as Poly-C/Eze Kote.... and no sadly I have no magic sandpaper!

For the life of me I cant find any difference between them apart from the price

Richard Wood04/02/2015 09:23:07
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1094 forum posts
164 photos

I wouldn't like to speculate on their different compositions but it's a good tip
& certainly worth a try if it sands & adheres as well.
 

 

Edited By Richard Wood on 04/02/2015 09:23:49

IanN04/02/2015 09:24:28
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1675 forum posts
119 photos
Posted by Dave Hopkin on 03/02/2015 23:51:03:

Poly C - £10.20 for 500ml = £22.40 Litre

Eze Kote - £15.00 for 500ml = £30 Litre

Ronseal Diamond Hard Floor Varnish - £39.99 for 2.5 Litre = £16.00 Litre

 

The question is:

Is there a difference?

Ronseal is water based, doesnt attack foam, bonds glass down and fills the weave, looks the same, no odour in particular

 

 

Dave, you may find the post from Grahamd on page 3 of this thread interesting

**LINK**

Is the Poly C currently being sold still the same stuff - i.e. rebottled Ronseal XL - or is it specially formulated - does anyone know?

Edited By IanN on 04/02/2015 09:45:46

John Laird04/02/2015 09:38:17
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428 forum posts
46 photos

Are any of them fuel proof against diesel or glo ?

getting close to finishing a cloud cruiser powered by a 4 stroke and need to decide how to cover

thanks

john

Dave Hopkin04/02/2015 09:48:04
3672 forum posts
294 photos

Fuel Proof..... No Idea sorry, I'm all electric!

Composition of them....

I have googled and failed misterably to find any technical specs for any of them, I suspect that there will be a very limited number of manufacturing plants making the stuff and its probably distributed within the trade as an undiluted polymer - as probably 90% ish of the stuff is water it would make no sense to transport diluted stuff round - so that leaves the final step before the retail outlet being for the distributor to dilute to taste.....

Solly04/02/2015 09:54:45
241 forum posts
1 photos

I remember reading about a product called Rustins Plastic Floor Coating. This is a two-part mix and was highly recommended for modelling use as it is completely fuel proof, although I've never tried it myself. Anyone used it?

Dave Hopkin04/02/2015 10:11:47
3672 forum posts
294 photos
Posted by Solly on 04/02/2015 09:54:45:

I remember reading about a product called Rustins Plastic Floor Coating. This is a two-part mix and was highly recommended for modelling use as it is completely fuel proof, although I've never tried it myself. Anyone used it?

And here it is **LINK**

But reading the health and safey pdf its a solvent based varnish wich isnt going anywhere near my Depron!

Might be perfectly good for all wood though

 

 

 

Edited By Dave Hopkin on 04/02/2015 10:30:34

Richard Wood04/02/2015 10:15:25
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1094 forum posts
164 photos
Posted by John Laird on 04/02/2015 09:38:17:

Are any of them fuel proof against diesel or glo ?

getting close to finishing a cloud cruiser powered by a 4 stroke and need to decide how to cover

thanks

john

Hi John,
From the Poly-C site:
Q - Can I use Poly-C as a fuel proofer around the tank bay and engine area.
A - Yes Poly-C is glow fuel, Diesel and petrol proof.

Fatscoleymo04/02/2015 11:38:29
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247 forum posts
86 photos

My experience with poly c has shown it is not fuel proof with 10% nitro glow fuel, either the raw fuel or exhaust residue.

It lifts and leaves a sticky goo, difficult to remove.

Fats.

Andy Meade04/02/2015 11:49:33
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2645 forum posts
679 photos

Best way to find composition is to try and find the COSHH / MSDS sheet for them.

Here is the one for Ronseal (opens PDF)

iqon04/02/2015 12:09:23
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1464 forum posts
239 photos

do you still need to seal balsa before use ???

Colin Bernard04/02/2015 12:36:20
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480 forum posts
81 photos

I echo the earlier comments regarding Poly C's fuel proofing, or lack of it.

I used it on a Maule powered by an SC 52FS, and after only around an hour's running I found that the Poly C had become tacky.

Being tacky it would not sand off, so having read of recommendations to use Ronseal Floor Varnish, and having a tin of the same sitting in the garage unopened, I painted the fuselage in that.

It cured the tackiness, and appears to be fuelproof, but although clear in the sense of being able to see through it, it is not clear in the sense of being colourless, so now my pristine white fuselage has a mucky brown cast to it.

Hey ho frown

Dave Hopkin04/02/2015 12:38:26
3672 forum posts
294 photos
Posted by Colin Bernard on 04/02/2015 12:36:20:

I echo the earlier comments regarding Poly C's fuel proofing, or lack of it.

I used it on a Maule powered by an SC 52FS, and after only around an hour's running I found that the Poly C had become tacky.

Being tacky it would not sand off, so having read of recommendations to use Ronseal Floor Varnish, and having a tin of the same sitting in the garage unopened, I painted the fuselage in that.

It cured the tackiness, and appears to be fuelproof, but although clear in the sense of being able to see through it, it is not clear in the sense of being colourless, so now my pristine white fuselage has a mucky brown cast to it.

Hey ho frown

The test pieces I have done with glass tissue and Clear Ronseal have come out totally clear, was yoyr Ronseal one of the ones containing a wood stain as well?

Richard Wood04/02/2015 12:57:28
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1094 forum posts
164 photos
Posted by iqon on 04/02/2015 12:09:23:

do you still need to seal balsa before use ???

It's water based so it's best not to apply it straight onto bare balsa or veneered
foam wings. The veneer can ripple with a water based solution applied directly
on top of it.
The usual method is to seal wood with cellulose sanding sealer before using Poly-C.
I've only used Poly-C on electric models so comments on fuelproofing above
are interesting.

Martyn K04/02/2015 13:26:31
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4980 forum posts
3624 photos
Posted by Solly on 04/02/2015 09:54:45:

I remember reading about a product called Rustins Plastic Floor Coating. This is a two-part mix and was highly recommended for modelling use as it is completely fuel proof, although I've never tried it myself. Anyone used it?

I have used it. It works well, is fuel proof but do NOT use the thinners to thin it down if painting onto a car rattle can paint. It will destroy your paint finish.

I'm trying it again on my next F3A classic. But no thinners.

Martyn

Robin Etherton04/02/2015 15:12:06
271 forum posts
41 photos
Posted by Dave Hopkin on 04/02/2015 10:11:47:
Posted by Solly on 04/02/2015 09:54:45:

I remember reading about a product called Rustins Plastic Floor Coating. This is a two-part mix and was highly recommended for modelling use as it is completely fuel proof, although I've never tried it myself. Anyone used it?

And here it is **LINK**

But reading the health and safey pdf its a solvent based varnish wich isnt going anywhere near my Depron!

Might be perfectly good for all wood though

Yes, used to use it over humbrol enamel on control line models. Totally fuel proof.

However not as thin as Furniglass hardset(tufcote) which was thin as water, flowed on with a brush, dried like it had been sprayed and was glass clear. Painted some stair handrails with the said Tufcote and they are still looking good 10 years on. Discontinued due to elf and safety I believe.

If I have to paint a model these days I get a two pack paint mixed up locally and put into an aerosol. Must use a mask and spray within 24 hrs but can keep for a year or more in the freezer( bottom drawer at the back where SHMBO won't see it. )Dark colours can change shade slightly over time.

Robin

Edited By Dave Hopkin on 04/02/2015 10:30:34

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